The Mosaic Company (MOS, NYSE)
Industry: Agricultural Inputs
Annual report, fiscal year 2017


## 2017
ANNUAL
REPORT






## Financial Highlights

NET SALES AND OPERATING EARNINGS
DOLLARS IN BILLIONS



CAPITAL EXPENDITURES
DOLLARS IN BILLIONS



COST CONTROLS (SG&A)
DOLLARS IN MILLIONS



NET CASH PROVIDED BY OPERATING ACTIVITIES
DOLLARS IN BILLIONS



PHOSPHATE CASH CONVERSION COSTS**
DOLLARS PER TONNE



MURIATE OF POTASH CASH COSTS OF PRODUCTION***
DOLLARS PER TONNE



*Unaudited due to change of year end from May 31 to December 31 in 2013.

**Phosphate cash conversion costs are reflective of actual costs, excluding realized mark-to-market gains and losses. These costs are captured in inventory and are not necessarily reflective of costs included in costs of goods sold for the period.

***MOP cash costs including brine management costs and royalties, excluding taxes and realized derivative gains/(losses). These costs are captured in inventory and are not necessarily reflective of costs included in costs of goods sold for the period.



## The Mosaic Company
Calendar Year 2017 Financial Review

## Financial Table of Contents

Management's Discussion and Analysis of Financial Condition and Results of Operations ..... 2
Reports of Independent Registered Public Accounting Firm ..... 38
Consolidated Statements of Earnings ..... 40
Consolidated Statements of Comprehensive Income ..... 41
Consolidated Balance Sheets ..... 42
Consolidated Statements of Cash Flows ..... 43
Consolidated Statements of Equity ..... 45
Notes to Consolidated Financial Statements ..... 46
Quarterly Results (Unaudited) ..... 90
Five Year Comparison ..... 91
Schedule II—Valuation and Qualifying Accounts ..... 93
Management's Report on Internal Control Over Financial Reporting ..... 94



# Management’s Discussion and Analysis of Financial Condition and Results of Operations

## Introduction

The Mosaic Company (before or after the Cargill Transaction, as defined below, “Mosaic”, and with its consolidated subsidiaries, “we”, “us”, “our”, or the “Company”) is the parent company of the business that was formed through the business combination (“Combination”) of IMC Global Inc. and the Cargill Crop Nutrition fertilizer businesses of Cargill, Incorporated and its subsidiaries (collectively, “Cargill”) on October 22, 2004. In May 2011, Cargill divested its approximately 64% equity interest in us in the first of a series of transactions (collectively, the “Cargill Transaction”). Further information regarding this transaction is included in the Overview section of this Management’s Discussion and Analysis of Financial Condition and Results of Operations and in Note 18 of our Notes to Consolidated Financial Statements.

We produce and market concentrated phosphate and potash crop nutrients. We conduct our business through wholly and majority owned subsidiaries as well as businesses in which we own less than a majority or a non-controlling interest, including consolidated variable interest entities and investments accounted for by the equity method.

At December 31, 2017, prior to completion of the Acquisition described below, we were organized into the following business segments:

Our Phosphates business segment includes mines and production facilities in Florida which produce concentrated phosphate crop nutrients and phosphate-based animal feed ingredients, and processing plants in Louisiana which produce concentrated phosphate crop nutrients. Additionally, the Phosphates segment has a 35% economic interest in a joint venture that owns a phosphate rock mine (the “Miski Mayo Mine”) in Peru and a 25% interest in Ma’aden Wa’ad Al Shamal Phosphate Company (the “MWSPC”), a joint venture to develop, own and operate integrated phosphate production facilities in the Kingdom of Saudi Arabia for which we will market approximately 25% of the production.

Our Potash business segment owns and operates potash mines and production facilities in Canada and the U.S. which produce potash-based crop nutrients, animal feed ingredients and industrial products. We are a member of Canpotex, Limited (“Canpotex”), an export association of Canadian potash producers through which we sell our Canadian potash outside of the U.S. and Canada.

Our International Distribution business segment provides our Phosphates segment and Potash segment, through Canpotex, market access to geographies outside North America. It consists of sales offices, fertilizer blending and bagging facilities, port terminals and warehouses in several key countries outside of North America, currently Brazil, Paraguay, India, and China. We also have a single superphosphate plant in Brazil that produces crop nutrients by mixing sulfuric acid with phosphate rock.

Intersegment eliminations, unrealized mark-to-market gains/losses on derivatives, debt expenses, Streamsong Resort \( ^{®} \)  results of operations and our legacy Argentina and Chile results are included within Corporate, Eliminations and Other.

On January 8, 2018, we completed our acquisition (the “Acquisition”) of Vale Fertilizantes S.A. (now known as Mosaic Fertilizantes P&K S.A., which we also refer to as Mosaic Fertilizantes). The aggregate consideration paid by Mosaic at closing was $1.08 billion in cash (after giving effect to certain adjustments based on matters such as the working capital and indebtedness balances of Mosaic Fertilizantes, which were estimated at the time of closing) and 34,176,574 shares of our Common Stock, par value $0.01 per share. The cash portion of the purchase price is subject to adjustment following the final determination of actual balances that were estimated at the time of closing. The assets we acquired include five Brazilian phosphate rock mines; four chemical plants; a potash mine in Brazil; an additional 40% economic interest in the Miski Mayo Mine, which increased our aggregate interest to 75%; and a potash project in Kronau, Saskatchewan.

Following completion of the Acquisition, we expect to realign our reporting segments to reflect the changes in our operations as our business in Brazil will no longer be strictly a distribution business. Our new segment will be called Mosaic Fertilizantes and will include the operations of Brazil and Paraguay. The results of the Miski Mayo Mine will be consolidated in our Phosphates segment. The results of our existing India and China distribution businesses will be reflected with Corporate and Other. These changes will be effective in the first quarter of 2018.



## Key Factors that can Affect Results of Operations and Financial Condition

Our primary products, phosphate and potash crop nutrients, are, to a large extent, global commodities that are also available from a number of domestic and international competitors, and are sold by negotiated contracts or by reference to published market prices. The markets for our products are highly competitive, and the most important competitive factor for our products is delivered price. Business and economic conditions and governmental policies affecting the agricultural industry and customer sentiment are the most significant factors affecting worldwide demand for crop nutrients. The profitability of our businesses is heavily influenced by worldwide supply and demand for our products, which affects our sales prices and volumes. Our costs per tonne to produce our products are also heavily influenced by fixed costs associated with owning and operating our major facilities, significant raw material costs in our Phosphates business, and fluctuations in currency exchange rates.

Our products are generally sold based on the market prices prevailing at the time the sales contract is signed or through contracts which are priced at the time of shipment based on a formula. Additionally, in certain circumstances the final price of our products is determined after shipment based on the current market at the time the price is agreed to with the customer. Forward sales programs at fixed prices increase the lag between prevailing market prices and our average realized selling prices. The mix and parameters of these sales programs vary over time based on our marketing strategy, which considers factors that include, among others, optimizing our production and operating efficiency within warehouse limitations, as well as customer requirements. The use of forward sales programs and level of customer prepayments may vary from period to period due to changing supply and demand environments, seasonality, and market sentiments.

World prices for the key raw material inputs for concentrated phosphate products, including ammonia, sulfur and phosphate rock, have an effect on industry-wide phosphate prices and production costs. The primary feedstock for producing ammonia is natural gas, and costs for ammonia are generally highly dependent on the supply and demand balance for ammonia. We purchase approximately one-third of our ammonia from various suppliers in the spot market with the remaining two-thirds either purchased through a long-term ammonia supply agreement (the “CF Ammonia Supply Agreement”) with an affiliate of CF Industries, Inc. (“CF”) or produced internally at our Faustina, Louisiana location. The CF Ammonia Supply Agreement provides for U.S. natural gas-based pricing that is intended to lessen pricing volatility. We entered into the agreement in late 2013, and we began purchasing under it in the second half of 2017. If the price of natural gas rises or the market price for ammonia falls outside of the range anticipated at execution of the agreement, we may not realize a cost benefit from the natural gas based pricing over the term of the agreement, or the cost of our ammonia under the agreement could be a competitive disadvantage. Based on the prevailing market prices of natural gas and ammonia as of the date of this report, the difference between what we would pay under the agreement versus what we would pay for ammonia on the spot market is not material. However, we continue to expect that the agreement will provide us a competitive advantage over its term, including by providing a reliable long-term ammonia supply.

Sulfur is a global commodity that is primarily produced as a co-product of oil refining, where the market price is based primarily on the supply and demand balance for sulfur. We believe our current and future investments in sulfur transformation and transportation assets will enhance our competitive advantage. We produce and procure most of our phosphate rock requirements through either wholly or partly owned mines.

Our per tonne selling prices for potash are affected by shifts in the product mix, geography and customer mix. Our Potash business is significantly affected by Canadian resource taxes and royalties that we pay to the Province of Saskatchewan in order for us to mine and sell our potash products. In addition, cost of goods sold is affected by fluctuations in the Canadian dollar; the level of periodic inflationary pressures on resources in western Canada, where we produce most of our potash; natural gas costs for operating our potash solution mine at Belle Plaine, Saskatchewan; and the operating costs we incur to manage salt saturated brine inflows at our potash mine at Esterhazy, Saskatchewan which are affected by changes in the amount and pattern of the inflows, among other factors. We also incur capital costs to manage the brine inflows at Esterhazy.

We manage brine inflows at Esterhazy through a number of methods, primarily by reducing or preventing particular sources of brine inflow by locating the point of entry through the use of various technologies, including 3D seismic surveys, micro seismic monitoring, injecting calcium chloride into the targeted areas from surface, and grouting targeted areas from underground. We also pump brine out of the mine, which we impound in surface storage areas and dispose of by injecting it below the surface through the use of injection wells. Excess brine is also stored in mined-out areas of the mine, and the level of this stored brine fluctuates, from time to time, depending on the net inflow or net outflow rate. To date, our brine inflow and remediation efforts have not had a material impact on our production processes or volumes. In recent years, we have



been investing in additional capacity and technology to manage the brine inflows. For example, we have significantly expanded our pumping capacity at Esterhazy in the last several years, introduced horizontal drilling capabilities, and have added brine injection capacity at a site that is remote from our current mine workings. These efforts allow us to be more disciplined and efficient in our approach to managing the brine inflow and to reduce our costs.

Our results of operations are also affected by changes in currency exchange rates due to our international footprint. The most significant currency impacts are generally from the Canadian dollar and the Brazilian real.

A discussion of these and other factors that affected our results of operations and financial condition for the periods covered by this Management’s Discussion and Analysis of Financial Condition and Results of Operations is set forth in further detail below. This Management’s Discussion and Analysis of Financial Condition and Results of Operations should also be read in conjunction with the narrative description of our business in Item 1, and the risk factors described in Item 1A, of Part I of this annual report on Form 10-K, and our Consolidated Financial Statements, accompanying notes and other information listed in the accompanying Financial Table of Contents.

Throughout the discussion below, we measure units of production, sales and raw materials in metric tonnes which are the equivalent of 2,205 pounds, unless we specifically state that we mean short or long ton(s) which are the equivalent of 2,000 pounds and 2,240 pounds, respectively. In addition, we measure natural gas, a raw material used in the production of our products, in MMBTU, which stands for one million British Thermal Units (BTU). One BTU is equivalent to 1.06 Joules.

In the following table, there are certain percentages that are not considered to be meaningful and are represented by “NM”.



## Results of Operations

The following table shows the results of operations for the years ended December 31, 2017, 2016, and 2015:

<table><tr><td rowspan="2">(in millions, except per share data)</td><td colspan="3">Years Ended December 31,</td><td colspan="2">2017-2016</td><td colspan="2">2016-2015</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td>Change</td><td>Percent</td><td>Change</td><td>Percent</td></tr><tr><td>Net sales</td><td>$ 7,409.4</td><td>$ 7,162.8</td><td>$ 8,895.3</td><td>$ 246.6</td><td>3%</td><td>$ (1,732.5)</td><td>(19)%</td></tr><tr><td>Cost of goods sold</td><td>6,566.6</td><td>6,352.8</td><td>7,177.4</td><td>213.8</td><td>3%</td><td>(824.6)</td><td>(11)%</td></tr><tr><td>Gross margin</td><td>842.8</td><td>810.0</td><td>1,717.9</td><td>32.8</td><td>4%</td><td>(907.9)</td><td>(53)%</td></tr><tr><td>Gross margin percentage</td><td>11.4%</td><td>11.3%</td><td>19.3%</td><td></td><td></td><td></td><td></td></tr><tr><td>Selling, general and administrative expenses</td><td>301.3</td><td>304.2</td><td>361.2</td><td>(2.9)</td><td>(1)%</td><td>(57.0)</td><td>(16)%</td></tr><tr><td>Other operating expenses</td><td>75.8</td><td>186.8</td><td>77.9</td><td>(111.0)</td><td>(59)%</td><td>108.9</td><td>140%</td></tr><tr><td>Operating earnings</td><td>465.7</td><td>319.0</td><td>1,278.8</td><td>146.7</td><td>46%</td><td>(959.8)</td><td>(75)%</td></tr><tr><td>Interest expense, net</td><td>(138.1)</td><td>(112.4)</td><td>(97.8)</td><td>(25.7)</td><td>23%</td><td>(14.6)</td><td>15%</td></tr><tr><td>Foreign currency transaction gain (loss)</td><td>49.9</td><td>40.1</td><td>(60.5)</td><td>9.8</td><td>24%</td><td>100.6</td><td>(166)%</td></tr><tr><td>Other expense</td><td>(3.5)</td><td>(4.3)</td><td>(17.2)</td><td>0.8</td><td>(19)%</td><td>12.9</td><td>(75)%</td></tr><tr><td>Earnings from consolidated companies before income taxes</td><td>374.0</td><td>242.4</td><td>1,103.3</td><td>131.6</td><td>54%</td><td>(860.9)</td><td>(78)%</td></tr><tr><td>Provision for (benefit from) income taxes</td><td>494.9</td><td>(74.2)</td><td>99.1</td><td>569.1</td><td>NM</td><td>(173.3)</td><td>(175)%</td></tr><tr><td>(Loss) earnings from consolidated companies</td><td>(120.9)</td><td>316.6</td><td>1,004.2</td><td>(437.5)</td><td>(138)%</td><td>(687.6)</td><td>(68)%</td></tr><tr><td>Equity in net earnings (loss) of nonconsolidated companies</td><td>16.7</td><td>(15.4)</td><td>(2.4)</td><td>32.1</td><td>NM</td><td>(13.0)</td><td>NM</td></tr><tr><td>Net (loss) earnings including noncontrolling interests</td><td>(104.2)</td><td>301.2</td><td>1,001.8</td><td>(405.4)</td><td>(135)%</td><td>(700.6)</td><td>(70)%</td></tr><tr><td>Less: Net earnings attributable to noncontrolling interests</td><td>3.0</td><td>3.4</td><td>1.4</td><td>(0.4)</td><td>(12)%</td><td>2.0</td><td>143%</td></tr><tr><td>Net (loss) earnings attributable to Mosaic</td><td>$ (107.2)</td><td>$ 297.8</td><td>$ 1,000.4</td><td>$ (405.0)</td><td>(136)%</td><td>$ (702.6)</td><td>(70)%</td></tr><tr><td>Diluted net (loss) earnings per share attributable to Mosaic</td><td>$ (0.31)</td><td>$ 0.85</td><td>$ 2.78</td><td>$ (1.16)</td><td>(136)%</td><td>$ (1.93)</td><td>(69)%</td></tr><tr><td>Diluted weighted average number of shares outstanding</td><td>350.9</td><td>351.7</td><td>360.3</td><td></td><td></td><td></td><td></td></tr></table>



## Overview of the Years ended December 31, 2017, 2016, and 2015

Net earnings (loss) attributable to Mosaic for the year ended December 31, 2017, was $(107.2)$ million, or $(0.31)\) per diluted share, compared to 2016 net earnings of $297.8$ million, or $0.85\) per diluted share, and $1.0$ billion, or $2.78\) per diluted share for 2015. Current year results include a discrete income tax expense of $451$ million, or $(1.30)\) per diluted share primarily related to enactment of the U.S. Tax Cuts and Jobs Act. Net earnings also includes a net impact to royalties and Canadian resource tax expense of $25$ million after tax, or $(0.07)\) per diluted share, related to the expected resolution of a royalty matter with the government of Saskatchewan to settle disputed Canadian potash royalties for prior years and related royalty and tax impacts and charges of $33$ million in other operating expenses, or $(0.11)\) per diluted share, related to items that are further discussed in the Other Income Statement Items section of this Management’s Discussion and Analysis of Financial Condition and Results of Operations. In addition, we recorded a pre-tax gain of $49$ million, or $0.15\) per diluted share, related to foreign currency transaction gains, the effect of which was partially offset by unrealized mark-to-market losses on derivatives of $13$ million, or $(0.03)\) per diluted share in 2017.

Net earnings for 2016 included discrete income tax benefits of $54 million, or $0.16 per diluted share. Our 2016 results include $135 million in other operating expenses, or $0.40 per diluted share, related to items which are further discussed in the Other Income Statement Items section of Management’s Discussion and Analysis of Financial Condition and Results of Operations. Reflected in our 2016 results is the write-off of a capital project at one of our equity investments, of which our share was approximately $24 million, or $16 million after tax and $0.05 per diluted share. In addition, we recorded $111 million, or $0.24 per diluted share, related to a foreign currency transaction gain and unrealized mark-to-market gains on derivatives in 2016. Our income tax rate was lower in 2016 compared to 2015 because our deductions are relatively fixed in dollars, while our profitability has been reduced.

Net earnings for 2015 included discrete income tax benefits of $47 million or $0.13 per diluted share. In addition, we recorded a foreign currency transaction loss of $61 million, or $0.15 per diluted share, and unrealized mark-to-market losses on derivatives of $32 million, or $0.08 per diluted share, in 2015.

Additional significant factors that affected our results of operations and financial condition in 2017, 2016 and 2015 are listed below. These factors are discussed in more detail in the following sections of this Management’s Discussion and Analysis of Financial Condition and Results of Operations.

## Year ended December 31, 2017

Operating earnings for the year ended December 31, 2017 were favorably impacted by higher potash production levels and an increase in potash sales volumes in the current year. Higher potash sales volumes, particularly export sales volumes, favorably impacted net sales and operating results in the current year compared to the prior year. In July 2016, we temporarily idled our Colonsay, Saskatchewan potash mine for the remainder of 2016 in light of reduced customer demand. We did not have a shut-down of similar length in the current year. In 2016, export sales volumes were low due to the delay in settlement of the China potash contract, which negatively impacted customer sentiment, affecting the timing of sales to other major markets. A similar delay in 2017 did not have a major impact on these markets. We also saw an increase in domestic sales volumes in the fourth quarter of 2017 due to a strong winter fill program and improved customer sentiment.

Phosphate operating earnings for the year ended December 31, 2017, were favorably impacted by the $52.1 million gain on our sale of approximately 1,500 acres of vacant and undesignated real property near our Faustina facility in Louisiana. Partially offsetting this was the impact of a decline in the average selling price of feed products in the current year compared to the prior year. Selling prices for these products were unfavorably impacted by increased competitor shipments into North America. The negative impact from lower selling prices was partially offset by lower raw material costs used in production in the current year compared to the prior year. Phosphate sales volumes were lower for the year ended December 31, 2017, compared to 2016. A significant portion of the decrease was a result of the impacts of Hurricane Irma, which occurred in the third quarter of 2017.

In the fourth quarter of 2017, average selling prices for phosphates and potash began to increase due to a change in sentiment that helped drive higher demand. These increases have continued in to 2018.



During 2017, we took the following steps toward achieving our strategic priorities:

• Grow our production of essential crop nutrients and operate with increasing efficiency

- On December 19, 2016, we entered into an agreement to acquire Vale S.A.’s global phosphate and potash operations conducted through Vale Fertilizantes S.A. (now known as Mosaic Fertilizantes P&K S.A., which we also refer to as Mosaic Fertilizantes). On December 28, 2017, the agreement was amended, among other things, to reduce both the cash portion of the purchase price and the number of shares to be issued. We completed the Acquisition on January 8, 2018. The aggregate consideration paid by Mosaic at closing was $1.08 billion in cash (after giving effect to certain adjustments estimated at the time of closing), which may be adjusted following closing to reflect actual balances at the time of closing, and 34,176,574 shares of Mosaic common stock. This transaction increased our annual finished phosphates production capacity by over four million tonnes and our annual finished potash production capacity by approximately 500,000 tonnes, bringing our total annual finished phosphate and potash production capacities to 16.1 million tonnes and 10.4 million tonnes, respectively. The assets we acquired include five Brazilian phosphate rock mines; four chemical plants; a potash mine in Brazil; an additional 40% economic interest in the Miski Mayo Mine, which increased our aggregate interest to 75%; and a potash project in Kronau, Saskatchewan.

- During 2017, we made equity contributions of $62.5 million to MWSPC, our joint venture with Saudi Arabian Mining Company (“Ma’aden”) and Saudi Basic Industries Corporation (“SABIC”) to develop, own and operate integrated phosphate production facilities in the Kingdom of Saudi Arabia. MWSPC commenced ammonia operations in late 2016 and pre-commissioning production of finished phosphate products began in 2017. Our cash investment at December 31, 2017 and as of the date of this report, is approximately $770 million. We currently estimate that our total cash investment in MWSPC, including the amount we have invested to date, will approximate $840 million. We are contractually obligated to make future cash contributions of approximately $70 million. We estimate the total cost to develop and construct the integrated phosphate production facilities to be approximately $8.0 billion of which approximately $7.0 billion has been spent. We expect the remaining amount to be funded through external debt facilities, income from ammonia operations and remaining investments by the joint venture members.

- We continued the expansion of capacity in our Potash segment with the K3 shafts at our Esterhazy mine and began to mine a limited amount of potash ore in 2017. Following ramp-up, we expect this expansion to add an estimated 0.9 million tonnes to our existing potash operational capacity. Once completed, this will provide us the opportunity to mitigate future brine inflow management costs and risk.

• Expand our reach and impact by continuously strengthening our distribution network

• We had record sales volumes of 7.4 million tonnes in our International Distribution segment in 2017.

• Focus on optimizing our asset portfolio and achieving our long-term balance sheet targets

• We continued to execute against our cost saving initiatives in ways that are positively impacting financial results:

We are on track to achieve our goal of reaching $500 million in cost savings by the end of 2018. We are approximately 85% of the way toward meeting this goal.

In 2016, we also targeted an additional $75 million in savings in our support functions, and realized that goal in 2017.

We are managing our capital through the reduction, deferral or elimination of certain capital spending. Capital expenditures in 2017 were the lowest in over five years.

On October 30, 2017, we announced the temporary idling of our Plant City, Florida, phosphate manufacturing facility for at least one year and restructured our Phosphates operations. We have recorded pre-tax charges of $20 million in 2017 related to the temporary idling of this facility and the restructuring. We expect that these actions will reduce market disruption from new capacity additions, including MWSPC. We also expect to see higher phosphate margins and lower capital requirements for the Company by reducing production at a relatively higher-cost facility.



- On October 31, 2017, our board of directors approved a reduction in our annual dividend from $0.60 per share to $0.10 per share, effective with the dividend paid on December 21, 2017.

- On November 13, 2017, we completed a $1.25 billion public debt offering consisting of $550 million aggregate principal amount of 3.250% senior notes due 2022 and $700 million aggregate principal amount of 4.050% senior notes due 2027. Proceeds from this offering were used to fund the $1.08 billion cash portion of the purchase price of the Acquisition paid at closing. The remainder was used to pay transaction costs and expenses and to fund a portion of the $200 million that we prepaid against our outstanding term loan in January 2018.

## Year ended December 31, 2016

Operating earnings for the year ended December 31, 2016, were unfavorably impacted by significantly lower average selling prices for phosphates and potash, partially offset by lower phosphates raw material costs and higher phosphates sales volumes.

Our net sales and operating results for the year ended December 31, 2016, were negatively impacted by a decline in phosphates average selling prices compared to the prior year. Phosphates average selling prices were unfavorably impacted by cautious purchasing behavior in the first half of 2016, driven by aggressive pricing by global producers and lower grain and oilseed prices. Selling prices were also influenced by lower raw material prices driven by global supply and demand of sulfur and ammonia. In the second half of 2016, sales volumes increased due to low phosphate pipeline inventory levels and concerns about tightness in product availability. A significant portion of the increase in our sales volumes was from sales of MicroEssentials \( ^{®} \)  in North America and Brazil.

Lower potash average selling prices unfavorably impacted net sales and operating results in 2016 compared to the prior year. In 2016, potash average selling prices were negatively impacted by the global competitive environment, driven by a strengthening of the U.S. dollar versus significantly devalued local currencies of other producers. Potash prices were also influenced by lower global grain and oilseed prices. Delays in settlement of the Chinese potash contract and high inventory levels early in 2016 also added downward pressure to potash selling prices during the first half of 2016.

## Year ended December 31, 2015

Operating earnings for the year ended December 31, 2015, were unfavorably impacted by lower average selling prices for phosphates, lower Potash sales volumes and higher Canadian Resource Tax expense as a result of Saskatchewan law changes enacted in 2015 regarding the treatment of capital expenditures. This was partially offset by lower costs in our Potash segment from our cost saving initiatives and the benefit from a weaker Canadian dollar compared to the same period in 2014.

In 2015, lower Potash sales volumes were primarily driven by lower sales volumes in North America as a result of excess supply and lower demand due to cautious customers' purchasing behavior. In the first half of 2015, there were increased imports into North America as foreign currency fluctuations allowed foreign competitors the ability to more economically ship product into North America. In the second half of the year, customers delayed purchases as a result of cautious purchasing behavior, when compared to the prior year.

Phosphates average selling prices started 2015 higher than the prior year due in part to the reduction in supply from the closure of certain phosphate U.S. production facilities owned by our competitors. However, in the second half of 2015, phosphates average selling prices started to decline below the prior year’s level, primarily due to lower raw material costs and lower commodity prices in 2015.



## Phosphates Net Sales and Gross Margin

The following table summarizes Phosphates net sales, gross margin, sales volumes and certain other information:

<table><tr><td rowspan="2">(in millions, except price per tonne or unit)</td><td colspan="4">Years Ended December 31,</td><td colspan="2">2017-2016</td><td colspan="2">2016-2015</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td>Change</td><td>Percent</td><td>Change</td><td>Percent</td><td></td></tr><tr><td>Net sales:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>North America</td><td>$ 2,061.7</td><td>$ 2,133.2</td><td>$ 2,766.4</td><td>$ (71.5)</td><td>(3.4)%</td><td>$ (633.2)</td><td>(22.9)%</td><td></td></tr><tr><td>International</td><td>1,527.5</td><td>1,577.7</td><td>1,853.8</td><td>(50.2)</td><td>(3.2)%</td><td>(276.1)</td><td>(14.9)%</td><td></td></tr><tr><td>Total</td><td>3,589.2</td><td>3,710.9</td><td>4,620.2</td><td>(121.7)</td><td>(3.3)%</td><td>(909.3)</td><td>(19.7)%</td><td></td></tr><tr><td>Cost of goods sold</td><td>3,257.0</td><td>3,361.1</td><td>3,783.1</td><td>(104.1)</td><td>(3.1)%</td><td>(422.0)</td><td>(11.2)%</td><td></td></tr><tr><td>Gross margin</td><td>$ 332.2</td><td>$ 349.8</td><td>$ 837.1</td><td>$ (17.6)</td><td>(5.0)%</td><td>$ (487.3)</td><td>(58.2)%</td><td></td></tr><tr><td>Gross margin as a percentage of net sales</td><td>9.3%</td><td>9.4%</td><td>18.1%</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Sales volume (in thousands of metric tonnes)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Crop Nutrients</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>North America - DAP/MAP (a)</td><td>3,370</td><td>3,590</td><td>3,604</td><td>(220)</td><td>(6.1)%</td><td>(14)</td><td>(0.4)%</td><td></td></tr><tr><td>International - DAP/MAP (a)(b)</td><td>2,969</td><td>3,255</td><td>3,392</td><td>(286)</td><td>(8.8)%</td><td>(137)</td><td>(4.0)%</td><td></td></tr><tr><td>MicroEssentials® (b)</td><td>2,698</td><td>2,300</td><td>1,782</td><td>398</td><td>17.3 %</td><td>518</td><td>29.1 %</td><td></td></tr><tr><td>Feed and Other (b)</td><td>423</td><td>535</td><td>567</td><td>(112)</td><td>(20.9)%</td><td>(32)</td><td>(5.6)%</td><td></td></tr><tr><td>Total Phosphates Segment Tonnes</td><td>9,460</td><td>9,680</td><td>9,345</td><td>(220)</td><td>(2.3)%</td><td>335</td><td>3.6 %</td><td></td></tr><tr><td>Average selling price per tonne:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>DAP (FOB plant)</td><td>$ 335</td><td>$ 335</td><td>$ 443</td><td>$ —</td><td>— %</td><td>$ (108)</td><td>(24.4)%</td><td></td></tr><tr><td>Average cost per unit consumed in cost of goods sold:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Ammonia (metric tonne)</td><td>$ 312</td><td>$ 307</td><td>$ 439</td><td>$ 5</td><td>1.6 %</td><td>$ (132)</td><td>(30.1)%</td><td></td></tr><tr><td>Sulfur (long ton)</td><td>$ 91</td><td>$ 105</td><td>$ 151</td><td>$ (14)</td><td>(13.3)%</td><td>$ (46)</td><td>(30.5)%</td><td></td></tr><tr><td>Blended rock (metric tonne)</td><td>$ 59</td><td>$ 61</td><td>$ 61</td><td>$ (2)</td><td>(3.3)%</td><td>$ —</td><td>— %</td><td></td></tr><tr><td>Production volume (in thousands of metric tonnes)</td><td>9,425</td><td>9,520</td><td>9,462</td><td>(95)</td><td>(1.0)%</td><td>58</td><td>0.6 %</td><td></td></tr></table>

(a) Excludes MicroEssentials \( ^{®} \) .

(b) Includes sales volumes to our International Distribution Segment.

Year Ended December 31, 2017 compared to Year Ended December 31, 2016

The Phosphates segment’s net sales were $3.6 billion for the year ended December 31, 2017, compared to $3.7 billion for the same period a year ago. The decrease in net sales was due to lower average selling prices and lower sales volumes, which each had a negative impact on net sales of approximately $60 million compared to the prior year.

Our average DAP selling price of $335 per tonne for the year ended December 31, 2017, was unchanged from the same period in the prior year. The negative impact on net sales related to selling price was primarily attributable to a decline in the selling price of feed products which were impacted by increased competition in the current year, as well as a shift in the product mix of MAP and MicroEssentials \( ^{\circledR} \)  products.

The Phosphates segment’s sales volumes decreased to 9.5 million tonnes for the year ended December 31, 2017, compared to 9.7 million tonnes in 2016. The decrease in sales volumes in the current year was due to a decrease in feed volumes, which were negatively impacted by increased competition from lower priced competitors in the market and lost sales volumes related to impacts from Hurricane Irma.



Gross margin for the Phosphates segment decreased to $332.2 million in the current year compared with $349.8 million for the prior year. Lower average selling prices and lower sales volumes resulted in decreases to gross margin of approximately $60 million and $10 million, respectively. This was offset by approximately $70 million related to lower raw material costs. Gross margin was negatively impacted by approximately $40 million related to planned and unplanned downtime at our Faustina, Louisiana ammonia facility, mostly in the second quarter of 2017. As a result of these factors, gross margin as a percentage of net sales decreased slightly to 9.3% for the year ended December 31, 2017 from 9.4% in 2016.

The average consumed price for ammonia for our North American operations increased to $312 per tonne in 2017 from $307 a year ago. The average consumed price for sulfur for our North American operations decreased to $91 per long ton for the year ended December 31, 2017 from $105 in the same period a year ago. The purchase price of these raw materials is driven by global supply and demand. The average consumed cost of purchased and produced rock decreased to $59 per tonne in the current year from $61 a year ago. The percentage of phosphate rock purchased from our Miski Mayo Mine included in cost of goods sold in our North American operations was 9% for the years ended December 31, 2017 and 2016.

The Phosphates segment’s production of crop nutrient dry concentrates and animal feed ingredients was 9.4 million tonnes for the year ended December 31, 2017 and 9.5 million tonnes for the year ended December 31, 2016, resulting in an operating rate of 81% for processed phosphate production for both years. On December 10, 2017, we temporarily idled our Plant City, Florida phosphate manufacturing facility which will be idled for at least one year.

Our phosphate rock production was 15.0 million tonnes in the current year compared with 14.2 million tonnes in the same period a year ago. We generally manage our rock production consistent with our long term mine plans.

Year Ended December 31, 2016 compared to Year Ended December 31, 2015

The Phosphates segment’s net sales were $3.7 billion for the year ended December 31, 2016 compared to $4.6 billion for the prior year. Significantly lower average selling prices had a negative impact on net sales of approximately $1.0 billion, which was partially offset by the favorable impact of higher sales volumes of approximately $100 million.

Our average DAP selling price was $335 per tonne for the year ended December 31, 2016, a decrease of $108 per tonne compared with the same period in 2015 due to the factors discussed in the Overview.

The Phosphates segment’s sales volumes increased to 9.7 million tonnes for the year ended December 31, 2016, compared to 9.4 million tonnes in the same period in 2015. The increase was driven by an increase in MicroEssentials \( ^{®} \)  sales volumes, partially offset by lower international sales volumes of DAP and MAP. Higher sales volumes of MicroEssentials \( ^{®} \)  reflect growth in our premium product channels.

Gross margin for the Phosphates segment decreased to $349.8 million for the year ended December 31, 2016, compared with $837.1 million for the prior year. Lower average selling prices resulted in a decrease to gross margin of approximately $1.0 billion. This was partially offset by approximately $30 million related to favorable sales volumes and lower raw material costs of approximately $400 million. Lower plant spending and the timing of turnarounds also had a favorable impact of approximately $50 million in the current year period. As a result of these factors, gross margin as a percentage of net sales decreased to 9.4% for the year ended December 31, 2016 compared to 18.1% for the same period of 2015.

The average consumed price for ammonia for our North American operations decreased to $307 per tonne in 2016 from $439 in 2015. The average consumed price for sulfur for our North American operations decreased to $105 per long ton for the year ended December 31, 2016 from $151 in the same period of 2015. The purchase price of these raw materials is driven by global supply and demand. The average consumed cost of purchased and produced rock was $61 per tonne in 2016 and 2015. The percentage of phosphate rock purchased from our Miski Mayo Mine included in cost of goods sold in our North American operations was 9% for 2016 compared to 7% for 2015.

The Phosphates segment’s production of crop nutrient dry concentrates and animal feed ingredients was 9.5 million tonnes for the years ended December 31, 2016 and 2015, resulting in an operating rate of 81% for processed phosphate production for both years.

Our phosphate rock production was 14.2 million tonnes in 2016 compared with 14.5 million tonnes in 2015.



## Potash Net Sales and Gross Margin

The following table summarizes Potash net sales, gross margin, sales volumes and certain other information:

<table><tr><td rowspan="2">(in millions, except price per tonne or unit)</td><td colspan="3">Years Ended December 31,</td><td colspan="2">2017-2016</td><td colspan="2">2016-2015</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td>Change</td><td>Percent</td><td>Change</td><td>Percent</td></tr><tr><td>Net sales:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>North America</td><td>$ 1,097.3</td><td>$ 1,024.3</td><td>$ 1,337.9</td><td>$ 73.0</td><td>7.1%</td><td>$ (313.6)</td><td>(23.4)%</td></tr><tr><td>International</td><td>755.3</td><td>661.4</td><td>1,109.1</td><td>93.9</td><td>14.2%</td><td>(447.7)</td><td>(40.4)%</td></tr><tr><td>Total</td><td>1,852.6</td><td>1,685.7</td><td>2,447.0</td><td>166.9</td><td>9.9%</td><td>(761.3)</td><td>(31.1)%</td></tr><tr><td>Cost of goods sold</td><td>1,461.0</td><td>1,429.1</td><td>1,658.7</td><td>31.9</td><td>2.2%</td><td>(229.6)</td><td>(13.8)%</td></tr><tr><td>Gross margin</td><td>391.6</td><td>256.6</td><td>788.3</td><td>135.0</td><td>52.6%</td><td>(531.7)</td><td>(67.4)%</td></tr><tr><td>Gross margin as a percentage of net sales</td><td>21.1%</td><td>15.2%</td><td>32.2%</td><td></td><td></td><td></td><td></td></tr><tr><td>Canadian resource taxes (CRT)</td><td>70.1</td><td>101.1</td><td>248.0</td><td>(31.0)</td><td>(30.7)%</td><td>(146.9)</td><td>(59.2)%</td></tr><tr><td>Gross margin (excluding CRT) \( ^{(a)} \)</td><td>$ 461.7</td><td>$ 357.7</td><td>$ 1,036.3</td><td>$ 104.0</td><td>29.1%</td><td>$ (678.6)</td><td>(65.5)%</td></tr><tr><td>Gross margin (excluding CRT) as a percentage of net sales \( ^{(b)} \)</td><td>24.9%</td><td>21.2%</td><td>42.3%</td><td></td><td></td><td></td><td></td></tr><tr><td>Sales volume (in thousands of metric tonnes)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Crop Nutrients:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>North America</td><td>3,436</td><td>3,231</td><td>2,431</td><td>205</td><td>6.3%</td><td>800</td><td>32.9%</td></tr><tr><td>International \( ^{(b)} \)</td><td>4,558</td><td>3,993</td><td>4,824</td><td>565</td><td>14.1%</td><td>(831)</td><td>(17.2)%</td></tr><tr><td>Total</td><td>7,994</td><td>7,224</td><td>7,255</td><td>770</td><td>10.7%</td><td>(31)</td><td>(0.4)%</td></tr><tr><td>Non-agricultural</td><td>607</td><td>554</td><td>671</td><td>53</td><td>9.6%</td><td>(117)</td><td>(17.4)%</td></tr><tr><td>Total Potash Segment Tonnes</td><td>8,601</td><td>7,778</td><td>7,926</td><td>823</td><td>10.6%</td><td>(148)</td><td>(1.9)%</td></tr><tr><td>Average selling price per tonne (FOB plant):</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>MOP - North America \( ^{(c)} \)</td><td>$ 198</td><td>$ 174</td><td>$ 313</td><td>$ 24</td><td>13.8%</td><td>$ (139)</td><td>(44.4)%</td></tr><tr><td>MOP - International</td><td>162</td><td>158</td><td>239</td><td>4</td><td>2.5%</td><td>(81)</td><td>(33.9)%</td></tr><tr><td>MOP - Average \( ^{(d)} \)</td><td>181</td><td>176</td><td>273</td><td>5</td><td>2.8%</td><td>(97)</td><td>(35.5)%</td></tr><tr><td>Production volume (in thousands of metric tonnes)</td><td>8,650</td><td>7,596</td><td>8,410</td><td>1,054</td><td>13.9%</td><td>(814)</td><td>(9.7)%</td></tr></table>

(a) Gross margin (excluding CRT), a non-GAAP measure, is calculated as GAAP gross margin less Canadian resource taxes (“CRT”). Gross margin (excluding CRT) as a percentage of net sales is calculated as GAAP gross margin less CRT, divided by net sales. Gross margin (excluding CRT) and gross margin (excluding CRT) as a percentage of net sales provide measures that we believe enhance the reader’s ability to compare our GAAP gross margin with that of other companies that incur CRT expense and classify it in a manner differently than we do in their statements of earnings. Because securities analysts, investors, lenders and others use gross margin, our management believes that our presentation of gross margin (excluding CRT) and gross margin (excluding CRT) as a percentage of sales for our Potash segment affords them greater transparency in assessing our financial performance against competitors’ gross margin (excluding CRT). A reconciliation of the GAAP and non-GAAP measures is found on page 18.

(b) Includes sales volumes to our International Distribution segment.

(c) This price excludes industrial and feed selling prices which are typically at a lag due to the nature of the contracts.

(d) This price includes industrial and feed sales.

Year Ended December 31, 2017 compared to Year Ended December 31, 2016

The Potash segment’s net sales increased to $1.9 billion for the year ended December 31, 2017, compared to $1.7 billion in the same period a year ago. The increase was primarily due to higher sales volumes that resulted in an increase in net sales of approximately $180 million.



Our average MOP selling price was $181 per tonne for the year ended December 31, 2017, an increase of $5 per tonne compared with the same period a year ago, due to improved market conditions in the current year. The benefit from the increase in our average MOP selling price was more than offset by a decrease in our average K-Mag sales price, due to increased competition in this area.

The Potash segment’s sales volumes increased to 8.6 million tonnes for the year ended December 31, 2017, compared to 7.8 million tonnes in the same period a year ago due to the factors discussed in the Overview.

Gross margin for the Potash segment increased to $391.6 million in the current year, from $256.6 million in the prior year period. Gross margin was positively impacted by approximately $40 million related to higher sales volumes, partially offset by a decrease of approximately $10 million driven by a decrease in our average K-Mag sales price as discussed above. Gross margin was also favorably impacted by approximately $120 million due to the effects of operating more efficiently at higher levels of production, partially offset by an increase of approximately $50 million related to royalty expense, as described below. These and other factors affecting gross margin and costs are further discussed below. As a result of all of these factors, gross margin as a percentage of net sales increased to 21.1% for the year ended December 31, 2017, compared to 15.2% for the same period a year ago.

We had expense of $70.1 million from Canadian resource taxes for the year ended December 31, 2017, compared to $101.1 million in the prior year period. Royalty expense increased to $71.9 million for the year ended December 31, 2017, compared to $20.5 million in the prior year period. The increase in royalty expense for the current year was related to the resolution of a royalty matter with the government of Saskatchewan to settle disputed Canadian potash royalties for prior years. This had a favorable impact on Canadian resource taxes for the current year period. Canadian resource taxes were also lower in the current year period due to a shift in the mix of production by mine.

We incurred $151.3 million in expenses, including depreciation on brine assets, at our Esterhazy mine in 2017, compared to $153.4 million in 2016. We have been effectively managing the brine inflows at Esterhazy since 1985, and from time to time we experience changes to the amounts and patterns of brine inflows. Inflows continue to be within the range of our historical experience. Brine inflow expenditures continue to reflect the cost of addressing changing inflow patterns, including inflows from below our mine workings, which can be more complex and costly to manage, as well as costs associated with horizontal drilling.

The Esterhazy mine has significant brine storage capacity. Depending on inflow rates, pumping and disposal rates, and other variables, the volume of brine stored in the mine may change significantly from period to period. In general, the higher the level of brine stored in the mine, the less time available to mitigate new or increased inflows that exceed our capacity for pumping or disposal of brine outside the mine, and therefore the less time to avoid flooding and/or loss of the mine. Our past investments in remote injection and increased pumping capacities facilitate our management of the brine inflows and the amount of brine stored in the mine.

For the year ended December 31, 2017, potash production was 8.7 million tonnes compared to 7.6 million tonnes in the prior year period. Our operating rate for potash production was 87% for 2017 compared to 72% for 2016. In the prior year, we took steps to scale our operations, in light of reduced customer demand, by idling our Colonsay, Saskatchewan potash mine for the second half of 2016. In 2017, we also completed a proving run at our Belle Plaine mine in February 2017, which resulted in favorable production compared to 2016.

## Year Ended December 31, 2016 compared to Year Ended December 31, 2015

The Potash segment’s net sales decreased to $1.7 billion for the year ended December 31, 2016, compared to $2.4 billion in 2015. The decrease was primarily due to significantly lower average selling prices that resulted in a decrease in net sales of approximately $810 million. Although overall sales volumes were down in 2016 compared to 2015, the 2016 sales mix resulted in a favorable impact on net sales of approximately $50 million, as we had an increase in our North America sales where prices were higher than international prices.

Our average MOP selling price was $176 per tonne for the year ended December 31, 2016, a decrease of $97 per tonne compared with the same period in 2015 due to the factors discussed in the Overview.

The Potash segment’s sales volumes decreased to 7.8 million tonnes for the year ended December 31, 2016, compared to 7.9 million tonnes in 2015 driven by a decrease in International sales volumes, due to delays in settlement of the China and India contracts in 2016. This was partially offset by an increase in North American sales, due to high channel inventories in 2015 and strong fall application season and the anticipation of price increases in the latter part of 2016.



Gross margin for the Potash segment decreased to $256.6 million in 2016, from $788.3 million in 2015. Gross margin was negatively impacted by approximately $810 million related to lower selling prices, partially offset by approximately $50 million due to sales mix as we had higher volumes in North America in 2016 compared to 2015. Gross margin was also favorably impacted by approximately $70 million due to the benefit of a weaker Canadian dollar and our cost-saving initiatives, partially offset by the unfavorable impact of higher fixed costs absorption in 2016 compared to 2015. These and other factors affecting gross margin and costs are further discussed below. As a result of all of these factors, gross margin as a percentage of net sales decreased to 15.2% for the year ended December 31, 2016, compared to 32.2% for the same period in 2015.

We incurred $153.4 million in expenses, including depreciation on brine assets, at our Esterhazy mine and $12.0 million in capital expenditures related to managing the brine inflows at our Esterhazy mine in 2016, compared to $165.7 million and $35.1 million, respectively, in 2015.

We incurred $101.1 million in Canadian resource taxes for the year ended December 31, 2016, compared with $248.0 million in 2015. These taxes decreased due to lower realized prices and profitability in 2016. Also in 2015, changes in Saskatchewan resource tax law resulted in higher taxes. Royalty expense decreased to $20.5 million for 2016, compared to $33.2 million for 2015 due to lower selling prices and lower production in 2016.

For the year ended December 31, 2016, potash production was 7.6 million tonnes compared to 8.4 million tonnes in 2015. Our operating rate for potash production was 72% for 2016 compared to 80% for 2015, as we took steps to scale our operations and idled our Colonsay, Saskatchewan, potash mine for the second half of 2016 in light of reduced customer demand. This enabled us to better manage our inventory levels and control costs.



## International Distribution Net Sales and Gross Margin

The following table summarizes International Distribution net sales, gross margin, sales volumes and certain other information:

<table><tr><td rowspan="2">(in millions, except price per tonne or unit)</td><td colspan="4">Years Ended December 31,</td><td colspan="2">2017-2016</td><td colspan="2">2016-2015</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td>Change</td><td>Percent</td><td>Change</td><td>Percent</td><td></td></tr><tr><td>Net Sales</td><td>$ 2,713.3</td><td>$ 2,533.5</td><td>$ 2,505.5</td><td>$ 179.8</td><td>7.1 %</td><td>$ 28.0</td><td>1.1 %</td><td></td></tr><tr><td>Cost of goods sold</td><td>2,537.9</td><td>2,387.3</td><td>2,357.7</td><td>150.6</td><td>6.3 %</td><td>29.6</td><td>1.3 %</td><td></td></tr><tr><td>Gross margin</td><td>$ 175.4</td><td>$ 146.2</td><td>$ 147.8</td><td>$ 29.2</td><td>20.0 %</td><td>$ (1.6)</td><td>(1.1)%</td><td></td></tr><tr><td>Gross margin as a percent of net sales</td><td>6.5%</td><td>5.8%</td><td>5.9%</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Gross Margin per sales tonne</td><td>$ 24</td><td>$ 21</td><td>$ 25</td><td>$ 3</td><td>14.3 %</td><td>$ (4)</td><td>(16.0)%</td><td></td></tr><tr><td>Sales volume (in thousands of metric tonnes)</td><td>7,361</td><td>6,802</td><td>5,978</td><td>559</td><td>8.2 %</td><td>824</td><td>13.8 %</td><td></td></tr><tr><td>Realized prices (\)/tonne)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Average selling price (FOB destination) \( ^{(a)} \)</td><td>$ 364</td><td>$ 369</td><td>$ 416</td><td>$ (5)</td><td>(1.4)%</td><td>$ (47)</td><td>(11.3)%</td><td></td></tr><tr><td>Purchases (&#x27;000 tonnes)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>DAP/MAP from Mosaic</td><td>1,162</td><td>1,287</td><td>987</td><td>(125)</td><td>(9.7)%</td><td>300</td><td>30.4 %</td><td></td></tr><tr><td>MicroEssentials \( ^{\circledR} \)  from Mosaic</td><td>979</td><td>880</td><td>490</td><td>99</td><td>11.3 %</td><td>390</td><td>79.6 %</td><td></td></tr><tr><td>Potash from Mosaic/Canpotex</td><td>2,746</td><td>2,020</td><td>2,039</td><td>726</td><td>35.9 %</td><td>(19)</td><td>(0.9)%</td><td></td></tr></table>

(a) Average price of all products sold by International Distribution.

Year Ended December 31, 2017 compared to Year Ended December 31, 2016

The International Distribution segment’s net sales increased to $2.7 billion for the year ended December 31, 2017, compared to $2.5 billion for 2016. In 2017, higher sales volumes favorably impacted net sales by approximately $210 million compared to the prior year period. This was partially offset by a decrease in average selling price, which negatively impacted net sales by approximately $30 million compared to the prior year.

The overall average selling price decreased $5 per tonne to $364 per tonne for 2017, driven primarily by a change in the mix of products sold and lower market prices in Brazil.

The International Distribution segment’s sales volume increased to 7.4 million tonnes for the year ended December 31, 2017, compared to 6.8 million tonnes for the same period a year ago, as a result of strong overall demand in Brazil. This increased demand was a result of our focused efforts to grow premium product sales, particularly MicroEssentials \( ^{®} \)  sales, and better demand for MOP. To a lesser extent, the increase was also due to improved market conditions for MOP sales in China and strong demand in India.

Our total gross margin increased to $175.4 million for the year ended December 31, 2017, compared with $146.2 million for the prior year due to increased sales volumes as discussed above and more favorable inventory positions in the current year compared to the prior year, partially offset by higher product costs. Gross margin per tonne increased to $24 per tonne for the year ended December 31, 2017 from $21 per tonne for the prior year.

Year Ended December 31, 2016 compared to Year Ended December 31, 2015

The International Distribution segment’s net sales were $2.5 billion for the years ended December 31, 2016 and 2015. In 2016, higher sales volumes favorably impacted net sales by approximately $340 million compared to 2015. This was partially offset by a decrease in average selling price, which negatively impacted net sales by approximately $315 million in 2016 compared to 2015.

The overall average selling price decreased $47 per tonne to $369 per tonne for 2016, primarily due to declines in global crop nutrient prices.

The International Distribution segment’s sales volume increased to 6.8 million tonnes for the year ended December 31, 2016, compared to 6.0 million tonnes for the same period in 2015, as a result of strong overall demand in Brazil. This increased



demand was a result of more available customer credit and our focused efforts to grow premium product sales, particularly MicroEssentials \( ^{®} \)  sales.

Our total gross margin was $146.2 million for the year ended December 31, 2016, compared with $147.8 million for 2015. Similar to the 2016, lower prices were partially offset by the lower cost of materials included in Blends due to overall decline in market prices. Gross margin per tonne decreased to $21 per tonne for the year ended December 31, 2016 from $25 per tonne for 2015, primarily due to unfavorable inventory positions as a result of competitive pricing pressure during the first six months of 2016.

## Corporate, Eliminations and Other

In addition to our three operating segments, we assign certain costs to Corporate, Eliminations and Other, which is presented separately in Note 24 to our Notes to Consolidated Financial Statements. Corporate, Eliminations and Other includes intersegment eliminations, including profit on intersegment sales, unrealized mark-to-market gains and losses on derivatives, debt expenses, our Streamsong Resort \( ^{®} \)  results of operations and our legacy Argentina and Chile results.

Gross margin for Corporate, Eliminations and Other was a loss of $56.4 million for the year ended December 31, 2017, compared to a gain of $57.4 million in the same period a year ago. The change was driven by an unrealized loss in the current year of $12 million, primarily on foreign currency derivatives, compared to a gain of $70 million in the prior year period. In addition, the elimination of profit on intersegment sales contributed an unfavorable change of approximately $33 million, which primarily relates to the timing of third party sales for our International Distribution segment.

Gross margin for Corporate, Eliminations and Other was a gain of $57.4 million for the year ended December 31, 2016, compared to a loss of $55.3 million in the same period a year ago. The change was driven by unrealized mark-to-market gains of $70 million in 2016, primarily on foreign currency derivatives, compared with losses of $32 million in 2015. Higher profit on intersegment sales of approximately $15 million in the current year period also contributed to the difference.

## Other Income Statement Items

<table><tr><td rowspan="2">(in millions)</td><td colspan="3">Years Ended December 31,</td><td colspan="2">2017-2016</td><td colspan="2">2016-2015</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td>Change</td><td>Percent</td><td>Change</td><td>Percent</td></tr><tr><td>Selling, general and administrative expenses</td><td>$ 301.3</td><td>$ 304.2</td><td>$ 361.2</td><td>$ (2.9)</td><td>(1)%</td><td>$ (57.0)</td><td>(16)%</td></tr><tr><td>Other operating expenses</td><td>75.8</td><td>186.8</td><td>77.9</td><td>(111.0)</td><td>(59)%</td><td>108.9</td><td>140%</td></tr><tr><td>Interest (expense)</td><td>(171.3)</td><td>(140.6)</td><td>(133.6)</td><td>(30.7)</td><td>22%</td><td>(7.0)</td><td>5%</td></tr><tr><td>Interest income</td><td>33.2</td><td>28.2</td><td>35.8</td><td>5.0</td><td>18%</td><td>(7.6)</td><td>(21)%</td></tr><tr><td>Interest expense, net</td><td>(138.1)</td><td>(112.4)</td><td>(97.8)</td><td>(25.7)</td><td>23%</td><td>(14.6)</td><td>15%</td></tr><tr><td>Foreign currency transaction gain (loss)</td><td>49.9</td><td>40.1</td><td>(60.5)</td><td>9.8</td><td>24%</td><td>100.6</td><td>(166)%</td></tr><tr><td>Other expense</td><td>(3.5)</td><td>(4.3)</td><td>(17.2)</td><td>0.8</td><td>(19)%</td><td>12.9</td><td>(75)%</td></tr><tr><td>Provision for (benefit from) income taxes</td><td>494.9</td><td>(74.2)</td><td>99.1</td><td>569.1</td><td>NM</td><td>(173.3)</td><td>NM</td></tr><tr><td>Equity in net earnings (loss) of nonconsolidated companies</td><td>16.7</td><td>(15.4)</td><td>(2.4)</td><td>32.1</td><td>NM</td><td>(13.0)</td><td>NM</td></tr></table>

## Selling, General and Administrative Expenses

Over the past three years, our selling, general and administrative expenses have decreased, despite the CF Phosphate Assets Acquisition and ADM Acquisition, in part as a result of successful initiatives to reduce support function costs. Selling, general and administrative expenses were $301.3 million for the year ended December 31, 2017, compared to $304.2 million for the same period a year ago. The additional benefit of cost reduction initiatives in 2017 was approximately $13.0 million compared with 2016. This was partially offset by increased bad debt expense and the impact of inflation.

Selling, general and administrative expenses were $304.2 million for the year ended December 31, 2016, compared to $361.2 million for the same period in 2015. The additional benefit of cost reduction initiatives in 2016 was approximately $30.0 million more than 2015. Lower incentive compensation for the year ended December 31, 2016, of approximately $20.9 million.



million compared to the same period in the prior year also contributed to lower expenses. In addition, selling, general and administrative expenses in 2015 included integration costs related to the ADM Acquisition of approximately $11.0 million.

## Other Operating Expenses

Other operating expenses were $75.8 million for the year ended December 31, 2017, compared to $186.8 million for the prior year period. Other operating expenses typically consist of four major categories: 1) Asset Retirement Obligations (“AROs”) 2) environmental and legal reserves, 3) insurance reimbursements and 4) gain/loss on fixed assets. The current year includes $26 million of professional service costs related to the Acquisition, $14 million related to an increase in our reserve for estimated costs associated with the sinkhole at our New Wales facility, $20 million of restructuring expense related to the temporary idling of our Plant City, Florida phosphate manufacturing facility, and $11 million of ARO expenses and adjustments. These were partially offset by a pre-tax gain on the sale of approximately 1,500 acres of vacant and undesignated real property near our Faustina facility in Louisiana of $52.1 million. In 2016, other operating expenses included an expense of $70 million related to our reserve for estimated costs associated with a sinkhole that formed at our New Wales phosphate production facility in Florida, which is discussed further in Note 21 to our Consolidated Financial Statements, a loss of $43 million related to the cancellation of construction of a barge intended to transport ammonia, as further explained in Note 16 of our Notes to our Consolidated Financial Statements, and $19 million of severance costs related to organizational restructuring, partially offset by the receipt of approximately $28 million in insurance proceeds related to a warehouse roof collapse at our Carlsbad, New Mexico, location in 2014.

Other operating expenses were $186.8 million for the year ended December 31, 2016, compared to $77.9 million for the prior year period. The increase in 2016 compared to 2015 was primarily due to the nonrecurring costs discussed above for 2016.

## Foreign Currency Transaction Gain (Loss)

In 2017, we recorded a foreign currency transaction gain of $49.9 million. The gain was mainly the result of the weakening of the U.S. dollar relative to the Canadian dollar on significant U.S. dollar-denominated intercompany loans, partially offset by U.S. dollar cash held by our Canadian subsidiaries and the strengthening of the U.S. dollar relative to the Brazilian Real on significant U.S. dollar-denominated payables held by our Brazilian subsidiaries.

In 2016, we recorded a foreign currency transaction gain of $40.1 million. The gain was mainly the result of the weakening of the U.S. dollar relative to the Canadian dollar on significant U.S. dollar-denominated intercompany loans and the weakening of the U.S. dollar relative to the Brazilian Real on significant U.S. dollar-denominated payables.

In 2015, we recorded a foreign currency transaction loss of $60.5 million. The loss was mainly due to the strengthening of the U.S. dollar relative to the Brazilian Real on significant U.S. dollar-denominated payables held by our Brazilian subsidiaries. During 2015, we entered into U.S. dollar-denominated intercompany debt held by our Canadian affiliates which more than offset gains on our U.S. dollar-denominated intercompany receivables and U.S. dollar cash held by our Canadian affiliates.

## Other Expense

For the years ended December 31, 2017, 2016 and 2015, we had other expense of $3.5 million, $4.3 million and $17.2 million, respectively. The current year includes $1 million of realized gains from investments held in two financial assurance trust funds created in 2016 to provide additional financial assurance for the estimated costs of closure and long-term care of our Florida and Louisiana phosphogypsum management systems (the “RCRA Trusts”). The year ended December 31, 2016, included realized losses from investments held by the RCRA Trusts of $10 million, partially offset by the gain on sale of an equity investment of approximately $7 million. Expense for the year ended December 31, 2015, included the write down of an equity investment of approximately $8 million.

## Equity in Net Earnings (Loss) of Nonconsolidated Companies

For the year ended December 31, 2017, we had a gain from equity of nonconsolidated companies of $16.7 million, net of tax, compared to loss of $15.4 million, net of tax, for the prior year. The gain in the current year was related to income from MWSPC, which began ammonia production in late 2016, partially offset by losses from the joint venture that owns the Miski Mayo mine, whose operations were impacted by flooding in the region earlier in the current year.



The loss in 2016 is due to the decision by Canpotex not to proceed with construction of a new export terminal at the Port of Prince Rupert in British Columbia, as Canpotex determined it currently has sufficient port access and terminal capacity options to meet its needs. Mosaic’s share of the loss was $24 million, or $16 million net of tax.

Provision for (Benefit from) Income Taxes

<table><tr><td></td><td>Effective Tax Rate</td><td>Provision for Income Taxes</td></tr><tr><td>Year Ended December 31, 2017</td><td>132.3 %</td><td>$ 494.9</td></tr><tr><td>Year Ended December 31, 2016</td><td>(30.6)%</td><td>(74.2)</td></tr><tr><td>Year Ended December 31, 2015</td><td>9.0 %</td><td>99.1</td></tr></table>

For all years our income tax is impacted by the mix of earnings across jurisdictions in which we operate, by a benefit associated with depletion, and by the impact of certain entities being taxed in both their foreign jurisdiction and the US including foreign tax credits for various taxes incurred.

In the year ended December 31, 2017, our tax rate was also impacted by the enactment of the U.S. Tax Cuts and Jobs Act (“The Act”) and other items specific to the period.

On December 22, 2017, The Act was enacted, significantly altering U.S. corporate income tax law. The SEC issued Staff Accounting Bulletin 118, which allows companies to record reasonable estimates of enactment impacts where the underlying analysis and calculations are not yet complete (“Provisional Estimates”). The Provisional Estimates must be finalized within a one-year measurement period. We recorded Provisional Estimates of the impact of The Act of $457.5 million related to several key changes in the law.

First, The Act imposes a one-time tax on “deemed” repatriation of foreign subsidiaries’ earnings and profits. The repatriation resulted in an estimated non-cash charge of $107.7 million. The charge was offset by a $202.6 million, non-cash reduction in the deferred tax liability related to certain undistributed earnings.

Second, we recognized a $2.3 million non-cash, deferred tax benefit related to the reduction of the U.S. federal rate from 35 percent to 21 percent.

Third, The Act significantly modifies the U.S. taxation of foreign earnings and the treatment of the related foreign tax credits. As a result of these changes, we have recorded valuation allowances against our foreign tax credits and our anticipatory foreign tax credits of $105.8 million and $440.3 million respectively.

Fourth, The Act repeals the corporate alternative minimum tax, or AMT, system and allows for the cash refund of excess AMT credits. The refundable AMT amounts are subject to a set of federal budgeting rules where a certain portion of the refundable amount will be permanently disallowed (the “Sequestration Rules”). We estimate that we will receive a cash refund of $121.5 million net of an $8.6 million charge related to the Sequestration Rules. The estimated refundable alternative minimum tax credit is included in other noncurrent assets.

The final impacts of The Act may differ from these provisional estimates, possibly materially, due to, among other things, changes in interpretations and assumptions we have made, guidance that may be issued, and actions we may take as a result of The Act.

The Act introduced a new category of taxable income called global intangible low-taxed income (“GILTI”). No provisional estimates were recorded for GILTI since we have not completed our full analysis of that provision of The Act. We have not yet elected an accounting policy to record any GILTI liabilities as either deferred tax items or as period costs.

In the year ended December 31, 2017, other items specific to the period included a cost of $15.1 million related to the $10.4 million pre-tax charges resulting from the resolution of a royalty matter with the government of Saskatchewan and related royalty impacts, a $7.5 million cost related to share-based compensation, and a $6.7 million expense related to the Peru rate change, offset by a $14.9 million U.S. state deferred benefit and other miscellaneous benefits of $6.1 million.

In the year ended December 31, 2016, tax expense specific to the period included a benefit of $54.2 million, which includes a domestic benefit of $85.8 million related to the resolution of an Advanced Pricing Agreement, which is a tax treaty-based process, partially offset by a $23.3 million expense related to distributions from certain non-U.S. subsidiaries and $8.3 million of expense primarily related to share-based excess cost. For further information, please see Note 12 to our Notes to Consolidated Financial Statements.



Income tax expense for the year ended December 31, 2015, was $99.1 million, an effective tax rate of 9.0% on pre-tax income of $1.1 billion. The tax rate included a benefit of $46.6 million, which consists of the resolution of certain state tax matters that resulted in a benefit of $18.4 million, a benefit of $14.5 million primarily related to changes in estimates associated with an Advanced Pricing Agreement, which is a tax treaty-based process, a benefit of $6.2 million related to losses on the sale of our distribution business in Chile and the reduction in the tax rate for one of our equity method investments that resulted in a benefit of $7.5 million.

## Non-GAAP Reconciliation

<table><tr><td rowspan="2"></td><td colspan="3">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Sales</td><td>$ 1,852.6</td><td>$ 1,685.7</td><td>$ 2,447.0</td></tr><tr><td>Gross margin</td><td>391.6</td><td>256.6</td><td>788.3</td></tr><tr><td>Canadian resource taxes</td><td>70.1</td><td>101.1</td><td>248.0</td></tr><tr><td>Gross margin, (excluding CRT)</td><td>$ 461.7</td><td>$ 357.7</td><td>$ 1,036.3</td></tr><tr><td>Gross margin (excluding CRT) as a percentage of net sales</td><td>24.9%</td><td>21.2%</td><td>42.3%</td></tr></table>

In addition to gross margin for the Potash segment, we have presented in the Management’s Analysis above, gross margin (excluding CRT), calculated as GAAP gross margin less Canadian resource taxes (“CRT”), and gross margin (excluding CRT) as a percentage of net sales, calculated as GAAP gross margin less CRT, divided by sales. Each is a non-GAAP financial measure. Generally, a non-GAAP financial measure is a supplemental numerical measure of a company’s performance, financial position or cash flows that either excludes or includes amounts that are not normally excluded or included in the most directly comparable measure calculated and presented in accordance with U.S. generally accepted accounting principles (“GAAP”). Neither gross margin (excluding CRT) nor gross margin (excluding CRT) as a percentage of net sales is a measure of financial performance under GAAP. Because not all companies use identical calculations, investors should consider that Mosaic’s calculation may not be comparable to other similarly titled measures presented by other companies.

Gross margin (excluding CRT) and gross margin (excluding CRT) as a percentage of net sales provide measures that we believe enhances the reader’s ability to compare our gross margin with that of other peer companies that incur CRT expense and classify it in a manner differently than we do in their statement of earnings. Because securities analysts, investors, lenders and others use gross margin (excluding CRT), our management believes that our presentation of gross margin (excluding CRT) for Potash affords them greater transparency in assessing our financial performance against competitors. When measuring the performance of our Potash business, our management regularly utilizes gross margin before CRT. Neither gross margin (excluding CRT) nor gross margin (excluding CRT) as a percentage of net sales, should be considered as a substitute for, or superior to, measures of financial performance prepared in accordance with GAAP.

## Critical Accounting Estimates

We prepare our Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America which requires us to make various judgments, estimates and assumptions that could have a significant impact on our reported results and disclosures. We base these estimates on historical experience and other assumptions believed to be reasonable at the time we prepare our financial statements. Changes in these estimates could have a material effect on our Consolidated Financial Statements.

Our significant accounting policies can be found in Note 2 of our Notes to Consolidated Financial Statements. We believe the following accounting policies include a higher degree of judgment and complexity in their application and are most critical to aid in fully understanding and evaluating our reported financial condition and results of operations.

## Recoverability of Goodwill

The carrying value of goodwill in our reporting units is tested annually as of October 31 \( ^{st} \)  for possible impairment. We typically use an income approach valuation model, representing present value of future cash flows, to determine the fair value of a reporting unit. Growth rates for sales and profits are determined using inputs from our annual strategic and long range planning process. The rates used to discount projected future cash flows reflect a weighted average cost of capital based on the Company’s industry, capital structure and risk premiums including those reflected in the current market capitalization.



When preparing these estimates, management considers each reporting unit’s historical results, current operating trends, and specific plans in place. These estimates are impacted by various factors including inflation, the general health of the economy and market competition. In addition, events and circumstances that might be indicators of possible impairment are assessed during other interim periods. Due to market conditions over recent years, we have experienced a significant decline in our market capitalization. Declines in our stock price during 2017 and the near term industry outlook caused us to update our assumptions for the fair values of our reporting units during the year. As of October 31, 2017, the date of the annual impairment testing, the Company concluded that the fair values of all reporting units were in excess of their respective carrying values and the goodwill for those units was not impaired. Due to the reduction of fair value in excess of carrying value of our reporting units, there is risk for future impairment if projected operating results are not met or other inputs into the fair value measurement diminish. See Note 9 of our Notes to Consolidated Financial Statements for additional information regarding the goodwill impairment analysis, including the methodologies and assumptions used in estimating the fair values of our reporting units. As of December 31, 2017, we had $1.7 billion of goodwill.

## Useful Lives of Depreciable Assets, Methods of Depreciation, and Rates of Depletion

We estimate initial useful lives of property, plant and equipment, and/or methods of depreciation, based on operational experience, current technology, improvements made to the assets, and anticipated business plans. Factors affecting the fair value of our assets, as noted above, may also affect the estimated useful lives of our assets and these factors can change. Therefore, we periodically review the estimated remaining useful lives of our facilities and other significant assets and adjust our depreciation rates prospectively where appropriate. As indicated in Note 2 of our Notes to Consolidated Financial Statements, effective January 1, 2017, we changed our estimates of the useful lives and method of determining depreciation of certain equipment (to the units-of-production method) to better reflect the estimated periods during which these assets will remain in service. The result of this change in estimates was a reduction in our depreciation expense, which increased operating earnings by approximately $65 million in 2017.

Depletion expenses for mining operations, including mineral reserves, are generally determined using the units-of-production method based on estimates of recoverable reserves. These estimates may change based on new information regarding the extent or quality of mineral reserves, permitting or changes in mining strategies.

## Environmental Liabilities and Asset Retirement Obligations

We record accrued liabilities for various environmental and reclamation matters including the demolition of former operating facilities, and AROs.

Contingent environmental liabilities are described in Note 21 of our Notes to Consolidated Financial Statements. Accruals for environmental matters are based primarily on third-party estimates for the cost of remediation at previously operated sites and estimates of legal costs for ongoing environmental litigation. We regularly assess the likelihood of material adverse judgments or outcomes, the effects of potential indemnification, as well as potential ranges or probability of losses. We determine the amount of accruals required, if any, for contingencies after carefully analyzing each individual matter. Estimating the ultimate settlement of environmental matters requires us to make complex and interrelated assumptions based on experience with similar matters, our history, precedents, evidence, and facts specific to each matter. Actual costs incurred in future periods may vary from the estimates, given the inherent uncertainties in evaluating environmental exposures. As of December 31, 2017 and 2016, we had accrued $35.1 million and $79.6 million, respectively, for environmental matters.

As indicated in Note 13 of our Notes to Consolidated Financial Statements, we recognize AROs in the period in which we have an existing legal obligation, and the amount of the liability can be reasonably estimated. We utilize internal engineering experts as well as third-party consultants to assist management in determining the costs of retiring certain of our long-term operating assets. Assumptions and estimates reflect our historical experience and our best judgments regarding future expenditures. The assumed costs are inflated based on an estimated inflation factor and discounted based on a credit-adjusted risk-free rate. For active facilities, fluctuations in the estimated costs (including those resulting from a change in environmental regulations), inflation rates and discount rates can have a significant impact on the corresponding assets and liabilities recorded in the Consolidated Balance Sheets. However, changes in the assumptions for our active facilities would not have a significant impact on the Consolidated Statements of Earnings in the year they are identified. For closed facilities, fluctuations in the estimated costs, inflation, and discount rates have an impact on the Consolidated Statements of Earnings in the year they are identified as there is no asset related to these items. Phosphate land reclamation activities generally occur concurrently with mining operations; as such, we accrue and expense reclamation costs as we mine. As of December 31, 2017 and 2016, $859.3 million and $849.9 million, respectively, was accrued for AROs (current and noncurrent amounts). In



August 2016, Mosaic deposited $630 million into two trust funds as financial assurance to support certain estimated future asset retirement obligations. See Note 13 of our Notes to Consolidated Financial Statements for additional information regarding the EPA RCRA Initiative.

## Income Taxes

We make estimates for income taxes in three major areas: uncertain tax positions, valuation allowances, and U.S. deferred income taxes on our non-U.S. subsidiaries' undistributed earnings.

On December 22, 2017, The Act was enacted, significantly altering U.S. corporate income tax law. The SEC issued Staff Accounting Bulletin 118, which allows companies to record reasonable estimates of enactment impacts where the all of the underlying analysis and calculations are not yet complete. The Provisional Estimates must be finalized within a one year measurement period. We recorded Provisional Estimates of the impact of the Act of $457.5 million related to several key changes in the law.

First, The Act imposes a one-time tax on the “deemed” repatriation of foreign subsidiaries’ earnings and profits. The repatriation resulted in an estimated non-cash charge of $107.7 million. The charge was offset by a $202.6 million, non-cash reduction in the deferred tax liability related to certain undistributed earnings.

Second, we recognized a $2.4 million non-cash, deferred tax benefit related to the reduction of the U.S. federal rate from 35 percent to 21 percent.

Third, The Act significantly modifies the U.S. taxation of foreign earnings and the treatment of the related foreign tax credits. As a result of these changes, we have recorded valuation allowances against our foreign tax credits and our anticipatory foreign tax credits of $105.8 million and $440.3 million respectively.

Fourth, The Act repeals the corporate alternative minimum tax, or AMT, system and allows for the cash refund of excess AMT credits. The refundable AMT amounts are subject to a set of federal budgeting rules where a certain portion of the refundable amount will be permanently disallowed. We estimate that we will receive a cash refund of $121.5 million net of an $8.6 million charge related to the Sequestration Rules. The estimated refundable alternative minimum tax credit is included in other noncurrent assets.

The final impacts of The Act may differ from these provisional estimates, possibly materially, due to, among other things, changes in interpretations and assumptions we have made, guidance that may be issued, and actions we may take as a result of The Act.

The Act introduced a new category of taxable income called GILTI. We have not yet elected an accounting policy to record GILTI liabilities as either deferred tax items or as period costs. No provisional estimates were recorded for GILTI since we have not completed our full analysis of that provision of The Act.

Due to Mosaic’s global operations, we assess uncertainties and judgments in the application of complex tax regulations in a multitude of jurisdictions. Future changes in judgment related to the expected ultimate resolution of uncertain tax positions will affect earnings in the quarter of such change. While it is often difficult to predict the final outcome or the timing of resolution of any particular uncertain tax position, our liabilities for income taxes reflect what we believe to be the more likely than not outcome. We adjust these liabilities, as well as the related interest, in light of changing facts and circumstances including negotiations with taxing authorities in various jurisdictions, outcomes of tax litigation, and resolution of disputes arising from tax audits in the normal course of business. Settlement of any particular position may require the use of cash. Based upon an analysis of tax positions taken on prior year returns and expected positions to be taken on the current year return, management has identified gross uncertain income tax positions of $39.3 million as of December 31, 2017.

A valuation allowance is provided for deferred tax assets for which it is more likely than not that the related tax benefits will not be realized. Significant judgment is required in evaluating the need for and magnitude of appropriate valuation allowances. The realization of the Company’s deferred tax assets is dependent on generating certain types of future taxable income, using both historical and projected future operating results, the source of future income, the reversal of existing taxable temporary differences, taxable income in prior carry-back years (if permitted) and the availability of tax planning strategies. As of December 31, 2017 and 2016, we had a valuation allowance of $584.1 million and $30.6 million, respectively. Changes in tax laws, assumptions with respect to future taxable income, tax planning strategies, resolution of matters under tax audit and foreign currency exchange rates could result in adjustment to these allowances.



We have not recorded U.S. deferred income taxes on certain of our non-U.S. subsidiaries’ undistributed earnings as such amounts are intended to be reinvested outside the United States indefinitely. Generally, such amounts become subject to U.S. taxation upon the remittance of dividends and under certain other circumstances. It is not practicable to estimate the amount of additional U.S. tax liabilities we would incur.

We have included a further discussion of income taxes in Note 12 of our Notes to Consolidated Financial Statements.

## Liquidity and Capital Resources

We define liquidity as the ability to generate or access adequate amounts of cash to meet current cash needs. We assess our liquidity in terms of our ability to fund working capital requirements, fund sustaining and opportunity capital projects, pursue strategic opportunities and capital management decisions which include making payments on and issuing indebtedness and making distributions to our shareholders, either in the form of share repurchases or dividends. Our liquidity, to a certain extent, is subject to general economic, financial, competitive and other factors that are beyond our control.

As of December 31, 2017, we had cash and cash equivalents of $2.2 billion ($1.08 billion of which was utilized for the Acquisition on January 8, 2018), plus marketable securities held in trust to fund future obligations of $0.6 billion, stockholders' equity of $9.6 billion, long-term debt, including current maturities of $5.2 billion and short-term debt of $6.1 million. We have a target liquidity buffer of $2.5 billion, including cash and available committed credit lines. We also target debt leverage ratios that are consistent with investment grade credit ratings. Our capital allocation priorities include maintaining our investment grade ratings and financial strength, sustaining our assets, including ensuring the safety and reliability of our assets, investing to grow our business either through organic growth or taking advantage of strategic opportunities and returning excess cash to shareholders, including paying our dividend. During 2017, we invested $820.1 million in capital expenditures and $62.5 million in MWSPC, and returned cash to shareholders through cash dividends of $210.6 million.

All of our cash and cash equivalents are diversified in highly rated investment vehicles. Our cash and cash equivalents are held either in the U.S. or held by non-U.S. subsidiaries and are not subject to significant foreign currency exposures, as the majority are held in investments denominated in U.S. dollars as of December 31, 2017. These funds may create foreign currency transaction gains or losses depending on the functional currency of the entity holding the cash.

In addition, there are no significant restrictions that would preclude us from bringing these funds back to the U.S.; however, on December 22, 2017, the Tax Cuts and Jobs Act (“The Act”) was enacted, significantly altering U.S. corporate income tax law. The Act imposes a one-time tax on the “deemed” repatriation of foreign subsidiaries’ earnings and profits. The repatriation resulted in an estimated non-cash charge of $107.7 million. The charge was offset by a $202.6 million, non-cash reduction in the deferred tax liability related to certain undistributed earnings, as discussed in Note 12 of our Notes to Consolidated Financial Statements.

## Cash Requirements

The cash portion of the Acquisition purchase price that we paid at the closing was $1.08 billion (adjusted based on matters such as the estimated working capital of Vale Fertilizantes at the time of the closing). We funded this amount with the proceeds of a $1.25 billion public debt offering that was completed in November 2017. The remainder was used to pay transaction costs and expenses and to fund the majority of the $200 million that we prepaid against our outstanding term loan in January 2018.

We have certain additional contractual cash obligations that require us to make payments on a scheduled basis. These include, among other things, long-term debt payments, interest payments, operating leases, unconditional purchase obligations, and funding requirements of pension and postretirement obligations. Our long-term debt has maturities ranging from one year to 26 years. Unconditional purchase obligations are our largest contractual cash obligations. These include obligations for capital expenditures related to our expansion projects, contracts to purchase raw materials such as sulfur, ammonia, phosphate rock and natural gas, obligations to purchase raw materials for our international distribution activities and equity contributions for or loans to nonconsolidated investments, including MWSPC. Other large cash obligations are our AROs and other environmental obligations primarily related to our Phosphates segment. We expect to fund our AROs, purchase obligations, and capital expenditures with a combination of operating cash flows, cash and cash equivalents, and borrowings. See Off-Balance Sheet Arrangements and Obligations below for the amounts owed by Mosaic under Contractual Cash



Obligations and for more information on other environmental obligations, and the discussion of MWSPC in Note 8 of our Notes to Consolidated Financial Statements for more information on this matter.

## Sources and Uses of Cash

The following table represents a comparison of the net cash provided by operating activities, net cash used in investing activities, and net cash provided by (used in) financing activities for calendar years 2017, 2016, and 2015:

<table><tr><td rowspan="2">(in millions)</td><td colspan="3">Years Ended December 31,</td><td colspan="2">2017-2016</td><td colspan="2">2016-2015</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td>Change</td><td>Percent</td><td>Change</td><td>Percent</td></tr><tr><td>Cash Flow</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Net cash provided by operating activities</td><td>$     935.5</td><td>$     1,260.2</td><td>$     2,038.3</td><td>$      (324.7)</td><td>(26)%</td><td>$      (778.1)</td><td>(38)%</td></tr><tr><td>Net cash used in investing activities</td><td>(667.8)</td><td>(1,866.0)</td><td>(1,118.4)</td><td>1,198.2</td><td>64 %</td><td>(747.6)</td><td>(67)%</td></tr><tr><td>Net cash provided by (used in) financing activities</td><td>1,200.8</td><td>(888.6)</td><td>(893.4)</td><td>2,089.4</td><td>235 %</td><td>4.8</td><td>(1)%</td></tr></table>

As of December 31, 2017, we had cash and cash equivalents of $2.2 billion (of which $1.08 billion was earmarked for the Acquisition). Funds generated by operating activities, available cash and cash equivalents, and our revolving credit facility continue to be our most significant sources of liquidity. We believe funds generated from the expected results of operations and available cash, cash equivalents and borrowings either under our revolving credit facility or through long-term borrowings will be sufficient to finance our operations, including our expansion plans, existing strategic initiatives, and expected dividend payments for the next 12 months. There can be no assurance, however, that we will continue to generate cash flows at or above current levels. At December 31, 2017, we had $1.98 billion available under our $2.0 billion revolving credit facility.

## Operating Activities

Net cash flow from operating activities has provided us with a significant source of liquidity. For the year ended December 31, 2017, net cash provided by operating activities was $0.9 billion, compared to $1.3 billion in the same period of the prior year. Our results of operations, after non-cash adjustments to net earnings, contributed $1.3 billion to cash flows from operating activities during 2017 compared to $1.0 billion during 2016. During 2017, we had an unfavorable working capital change of $316.9 million compared to a favorable change of $308.3 million during 2016.

The change in working capital for the year ended December 31, 2017, was primarily driven by unfavorable impacts from the changes in inventories of $155.7 million, an unfavorable impact from the change in net receivables of $91.2 million, and an unfavorable impact from the change in accounts payable and accrued liabilities of $65.7 million. The change in inventories was primarily related to the increased cost of ammonia in the fourth quarter of 2017 compared to the same period in 2016 and to more inventory in transit at December 31, 2017 compared to December 31, 2016. The unfavorable impact in accounts payable and accrued liabilities was primarily due to a decrease in our accrual for costs associated with the New Wales sinkhole as many of these cost were paid in the current year and the timing of payments in the current year compared to the prior year period. The change in net receivables is due to primarily to higher sales volumes in December 2017 compared to December 2016.

The change in assets and liabilities for the year ended December 31, 2016, was primarily driven by favorable impacts from the changes in inventories of $263.0 million and other current and noncurrent assets of $239.8 million, partially offset by an unfavorable impact from the change in accounts payable and accrued liabilities of $243.9 million. The change in inventories was primarily related to the lower cost of raw material and inventory purchases in the current year. The change in other current and noncurrent assets was driven by a decrease in the balance of final price deferred product and a decrease in income tax receivable. The balance of our final price deferred product decreased during 2016 as rising prices late in the year caused customers to price product at the end of 2016. Income taxes receivable decreased due to the receipt of a refund for income taxes in 2016. The unfavorable impact in accounts payable was primarily due to our International Distribution business and the timing of payments.



The change in working capital for the year ended December 31, 2015, was primarily driven by a favorable impact from the change in accounts payable of $301.8 million, partially offset by an unfavorable impact from the change in other current and noncurrent assets of $82.6 million. The change in other current and noncurrent assets was driven by an increase in the balance of final price deferred product and an increase in income tax receivable. The balance of our final price deferred product increased during 2015 from a low level in December 2014 as rising prices caused customers to price product at the end of 2014. Income taxes receivable increased due to the overpayment of estimated payments in 2015. The favorable impact in accounts payable was primarily due to our International Distribution business and the timing of payments as we have extended terms in Brazil.

## Investing Activities

Net cash used in investing activities for the year ended December 31, 2017, was $0.7 billion, compared to $1.9 billion in the same period a year ago. Included in net cash used in investing activities in the current year period is an investment of $62.5 million in MWSPC compared to $220.0 million during 2016. Included in the $300.7 million of proceeds on net sales of assets in 2017 is $52.1 million related to the sale of land near our Faustina, Louisiana facility and $230 million for the sale of an articulated tug and barge unit to an affiliate of Savage Companies. See Note 22 of our Notes to Consolidated Financial Statements in this report for further discussion. Also in the current year period, we had capital expenditures of $820.1 million, compared to $843.1 million in the prior year period.

Net cash used in investing activities for the year ended December 31, 2016, was $1.9 billion, compared to $1.1 billion in the same period in 2015. Included in net cash used in investing activities in 2016 is an investment of $220.0 million in MWSPC compared to $225.2 million during 2015. In addition, we invested $169.0 million in a consolidated affiliate in the current year, for the construction of vessels intended to transport anhydrous ammonia, primarily for Mosaic's operations, as discussed in Note 22 of our Notes to Consolidated Financial Statements in this report. In 2016, we had capital expenditures of $843.1 million, compared to $1.0 billion in the prior year period. Also, in 2016, approximately $200 million, previously held in the Plant City Trust, was released to us after we arranged for substitute financial assurance through delivery of a surety bond by insurance companies for financial assurance purposes as discussed in Note 13 of our Notes to Consolidated Financial Statements.

Net cash used in investing activities for the year ended December 31, 2015, was $1.1 billion. We had capital expenditures of $1.0 billion and invested $225.2 million in MWSPC. Also, in 2015, we received $47.9 million related to a working capital adjustment from our ADM Acquisition.

## Financing Activities

Net cash provided by financing activities was $1.2 billion for the year ended December 31, 2017. Net cash used in financing activities was $0.9 billion for the year ended December 31, 2016. On November 13, 2017, we completed a $1.25 billion public debt offering consisting of $550 million aggregate principal amount of 3.250% senior notes due 2022 and $700 million aggregate principal amount of 4.050% senior notes due 2027. Financing activities for 2017 also reflected net proceeds from structured accounts payable of $248.3 million and dividends paid of $210.6 million.

Net cash used in financing activities was $0.9 billion for the years ended December 31, 2016 and 2015, respectively. Cash used in financing activities for 2016 reflected net payments for structured accounts payable of $358.6 million and dividends paid of $385.1 million. During 2016, we also purchased shares of our common stock for approximately $75.0 million under our 2015 Repurchase Program.

Net cash used in financing activities for the year ended December 31, 2015, was $0.9 billion. Cash used in financing activities primarily reflected shares repurchased during the year, for an aggregate of approximately $709.5 million, and dividends paid of $384.7 million. These were partially offset by net proceeds from structured accounts payable arrangements of $239.5 million in 2015.

## Debt Instruments, Guarantees and Related Covenants

See Note 10 of our Notes to Consolidated Financial Statements for additional information relating to our financing arrangements, which is hereby incorporated by reference.



## Financial Assurance Requirements

In addition to various operational and environmental regulations primarily related to our Phosphates segment, we incur liabilities for reclamation activities under which we are subject to financial assurance requirements. In various jurisdictions in which we operate, particularly Florida and Louisiana, we are required to pass a financial strength test or provide credit support, typically in the form of cash deposits, surety bonds or letters of credit. See Other Commercial Commitments under Off-Balance Sheet Arrangements and Obligations and Note 21 of our Notes to Consolidated Financial Statements for additional information about these requirements.

## Off-Balance Sheet Arrangements and Obligations

## Off-Balance Sheet Arrangements

In accordance with the definition under rules of the Securities and Exchange Commission (“SEC”), the following qualify as off-balance sheet arrangements:

- certain obligations under guarantee contracts that have “any of the characteristics identified in Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) paragraph ASC 460-10-15-4 (Guarantees Topic)”;

- a retained or contingent interest in assets transferred to an unconsolidated entity or similar arrangement that serves as credit, liquidity or market risk support to that entity for such assets;

- any obligation, including a contingent obligation, under a contract that would be accounted for as derivative instruments except that it is both indexed to the registrant’s own stock and classified as equity; and

- any obligation, arising out of a variable interest in an unconsolidated entity that is held by, and material to, the registrant, where such entity provides financing, liquidity, market risk or credit risk support to the registrant, or engages in leasing, hedging or research and development services with the registrant.

Information regarding guarantees that meet the above requirements is included in Note 16 of our Notes to Consolidated Financial Statements and is hereby incorporated by reference. We do not have any contingent interest in assets transferred, derivative instruments, or variable interest entities that qualify as off-balance sheet arrangements under SEC rules.

## Contractual Cash Obligations

The following is a summary of our contractual cash obligations as of December 31, 2017:

<table><tr><td rowspan="2">(in millions)</td><td rowspan="2">Total</td><td colspan="5">Payments by Calendar Year</td></tr><tr><td>Less than 1 year</td><td>1 - 3 years</td><td>3 - 5 years</td><td>More than 5 years</td><td></td></tr><tr><td>Long-term debt \( ^{(a)} \)</td><td>5,221.6</td><td>343.5</td><td>173.0</td><td>1,358.9</td><td>3,346.2</td><td></td></tr><tr><td>Estimated interest payments on long-term debt \( ^{(b)} \)</td><td>2,566.4</td><td>223.6</td><td>436.1</td><td>389.3</td><td>1,517.4</td><td></td></tr><tr><td>Operating leases</td><td>310.1</td><td>76.6</td><td>104.6</td><td>77.8</td><td>51.1</td><td></td></tr><tr><td>Purchase commitments \( ^{(c)} \)</td><td>7,209.7</td><td>2,417.7</td><td>1,195.0</td><td>937.6</td><td>2,659.4</td><td></td></tr><tr><td>Pension and postretirement liabilities \( ^{(d)} \)</td><td>445.5</td><td>16.5</td><td>94.1</td><td>96.0</td><td>238.9</td><td></td></tr><tr><td>Total contractual cash obligations</td><td>15,753.3</td><td>3,077.9</td><td>2,002.8</td><td>2,859.6</td><td>7,813.0</td><td></td></tr></table>



(d) The 2018 pension plan payments are based on minimum funding requirements. For years thereafter, pension plan payments are based on expected benefits paid. The postretirement plan payments are based on projected benefit payments.

In addition to the above, we have an obligation to fund our investment in MWSPC by approximately $70 million.

## Other Commercial Commitments

The following is a summary of our other commercial commitments as of December 31, 2017:

<table><tr><td rowspan="2">(in millions)</td><td rowspan="2">Total</td><td colspan="5">Commitment Expiration by Calendar Year</td></tr><tr><td>Less than 1 year</td><td>1 - 3 years</td><td>3 - 5 years</td><td>More than 5 years</td><td></td></tr><tr><td>Letters of credit</td><td>$ 70.2</td><td>$ 70.2</td><td>$ —</td><td>$ —</td><td>$ —</td><td>—</td></tr><tr><td>Surety bonds</td><td>476.0</td><td>476.0</td><td>—</td><td>—</td><td>—</td><td>—</td></tr><tr><td>Total</td><td>$ 546.2</td><td>$ 546.2</td><td>$ —</td><td>$ —</td><td>$ —</td><td>—</td></tr></table>

The surety bonds and letters of credit generally expire within one year or less but a substantial portion of these instruments provide financial assurance for continuing obligations and, therefore, in most cases, must be renewed on an annual basis. We issue letters of credit through our revolving credit facility and bi-lateral agreements. As of December 31, 2017, we had $15.4 million of outstanding letters of credit through our credit facility and $54.8 million outstanding through bi-lateral agreements. We primarily incur liabilities for reclamation activities in our Florida operations and for phosphogypsum management system (“Gypstack”) closure in our Florida and Louisiana operations where, for permitting purposes, we must either pass a test of financial strength or provide credit support, typically in the form of cash deposits, surety bonds or letters of credit. As of December 31, 2017, we had $186.4 million in surety bonds and a $50 million letter of credit included in the amount above, outstanding for reclamation obligations, primarily related to mining in Florida, and a $245.6 million surety bond delivered to EPA as a substitute for the financial assurance provided through the Plant City Trust. The surety bonds generally require us to obtain a discharge of the bonds or to post additional collateral (typically in the form of cash or letters of credit) at the request of the issuer of the bonds.

We are subject to financial assurance requirements related to the closure and post-closure care of our Gypstacks in Florida and Louisiana. These requirements include Florida and Louisiana state financial assurance regulations, and financial assurance requirements under the terms of consent decrees that we have entered into with respect to our facilities in Florida and Louisiana. These include a consent decree (the “Plant City Consent Decree”) with the Environmental Protection Agency (“EPA”) and the Florida Department of Environmental Protection (“FDEP”) relating to the Plant City, Florida, facility we acquired as part of the CF Phosphate Assets Acquisition (the “Plant City Facility”) and two separate consent decrees (collectively, the “2015 Consent Decrees”) with federal and state regulators that include financial assurance requirements for the closure and post-closure care of substantially all of our Gypstacks in Florida and Louisiana, other than those acquired as part of the CF Phosphate Assets Acquisition, which are discussed separately below.

See Note 13 of our Notes to Consolidated Financial Statements for additional information relating to our financial assurance obligations, including the Plant City Consent Decree and the 2015 Consent Decrees, which information is incorporated by reference.

Currently, state financial assurance requirements in Florida and Louisiana for the closure and post-closure care of Gypstacks are, in general terms, based upon the same assumptions and associated estimated values as the AROs recognized for financial reporting purposes. For financial reporting purposes, we recognize the AROs based on the estimated future closure and post-closure costs of Gypstacks, the undiscounted value of which is approximately $1.6 billion. The value of the AROs for closure and post-closure care of Mosaic’s Gypstacks, discounted to the present value based on a credit-adjusted risk-free rate, is reflected on our Consolidated Balance Sheets in the amount of approximately $530 million as of December 31, 2017. Compliance with the financial assurance requirements in Florida and Louisiana is generally based on the undiscounted Gypstack closure estimates.

We satisfy substantially all of our Florida, Louisiana and federal financial assurance requirements through compliance with the financial assurance requirements under the 2015 Consent Decrees, by providing third-party credit support in the form of surety bonds (including under the Plant City Consent Decree), and through a trust fund related to a closed Florida phosphate



concentrates facility in Bartow, Florida, (the “Bonnie Facility”) as discussed below. We comply with our remaining state financial assurance requirements because our financial strength permits us to meet applicable financial strength tests. However, at various times we have not met the applicable financial strength tests and there can be no assurance that we will be able to meet the applicable financial strength tests in the future. In the event we do not meet either financial strength test, we could be required to seek an alternate financial strength test acceptable to state regulatory authorities or provide credit support, which may include surety bonds, letters of credit and cash escrows or trust funds. Cash escrows or trust funds would be classified as restricted cash on our Consolidated Balance Sheets. Assuming we maintain our current levels of liquidity and capital resources, we do not expect that these Florida and Louisiana requirements will have a material effect on our results of operations, liquidity or capital resources.

As part of the CF Phosphate Assets Acquisition, we assumed certain ARO related to Gypstack Closure Costs at both the Plant City Facility and the Bonnie Facility that we acquired. Associated with these assets are two related financial assurance arrangements for which we became responsible and that provide sources of funds for the estimated Gypstack Closure Costs for these facilities, pursuant to federal or state law, which the government can draw against in the event we cannot perform such closure activities. One was initially a trust (the “Plant City Trust”) established to meet the requirements under a consent decree with EPA and the FDEP with respect to RCRA compliance at Plant City that also satisfied Florida financial assurance requirements at that site. Beginning in September 2016, as a substitute for the financial assurance provided through the Plant City Trust, we have provided financial assurance for Plant City in the form of a surety bond delivered to EPA (the “Plant City Bond”), currently in the amount of $245.6 million, reflecting our updated closure cost estimates. Following that substitution, approximately $200 million, previously held in the Plant City Trust, became unrestricted cash. The other is a trust fund (the “Bonnie Facility Trust”) established to meet the requirements under Florida financial assurance regulations that apply to the Bonnie Facility. The balance in the Bonnie Facility Trust is $20.9 million as of December 31, 2017. Both financial assurance funding obligations require estimates of future expenditures that could be impacted by refinements in scope, technological developments, new information, cost inflation, changes in regulations, discount rates and the timing of activities. We are also permitted to satisfy our financial assurance obligations with respect to the Bonnie and Plant City Facilities by means of alternative credit support, including surety bonds or letters of credit. Under our current approach to satisfying applicable requirements, additional financial assurance would be required in the future if increases in cost estimates exceed the face amount of the Plant City Bond or the amount held in the Bonnie Facility Trust.

## Other Long-Term Obligations

The following is a summary of our other long-term obligations, including Gypstacks and land reclamation in our Phosphate and Potash segment, as of December 31, 2017:

<table><tr><td rowspan="2">(in millions)</td><td rowspan="2">Total</td><td colspan="5">Payments by Calendar Year</td></tr><tr><td>Less than 1 year</td><td>1 - 3 years</td><td>3 - 5 years</td><td>More than 5 years</td><td></td></tr><tr><td>ARO \( ^{(a)} \)</td><td>2,228.8</td><td>85.3</td><td>144.7</td><td>87.0</td><td>1,911.8</td><td></td></tr></table>

(a) Represents the undiscounted, inflation-adjusted estimated cash outflows required to settle the AROs. The corresponding present value of these future expenditures is $859.3 million as of December 31, 2017, and is reflected in our accrued liabilities and other noncurrent liabilities in our Consolidated Balance Sheets.

In addition to the above, in 2014, we entered into five-year fertilizer supply agreements providing for Mosaic to supply ADM’s fertilizer needs in Brazil and Paraguay.

Most of our export sales of potash crop nutrients are marketed through a North American export association, Canpotex, which funds its operations in part through third-party financing facilities. As a member, Mosaic or our subsidiaries are, subject to certain conditions and exceptions, contractually obligated to reimburse Canpotex for their pro rata share of any operating expenses or other liabilities incurred. The reimbursements are made through reductions to members' cash receipts from Canpotex.

Commitments are set forth in Note 20 of our Notes to Consolidated Financial Statements and are hereby incorporated by reference.



## Income Tax Obligations

Gross uncertain tax positions as of December 31, 2017, of $39.3 million are not included in the other long-term obligations table presented above because the timing of the settlement of unrecognized tax benefits cannot be reasonably determined. For further discussion, refer to Note 12 of our Notes to Consolidated Financial Statements.

## Market Risk

We are exposed to the impact of fluctuations in the relative value of currencies, fluctuations in interest rates, fluctuations in the purchase prices of natural gas, nitrogen, ammonia and sulfur consumed in operations, and changes in freight costs, as well as changes in the market value of our financial instruments. We periodically enter into derivatives in order to mitigate our interest rate risks, foreign currency risks and the effects of changing commodity prices and freight prices, but not for speculative purposes. Unrealized mark-to-market gains and losses on derivatives are recorded in Corporate, Eliminations and Other. Once realized, they are recorded in the related business segment.

## Foreign Currency Exchange Rates

We use financial instruments, including forward contracts and zero-cost collars, which typically expire within eighteen months, to reduce the impact of foreign currency exchange risk in our cash flows, not the foreign currency volatility in our earnings.

One of the primary currency exposures relates to several of our Canadian entities, whose sales are primarily denominated in U.S. dollars, but whose costs are paid principally in Canadian dollars, which is their functional currency. We generally enter into derivative instruments for a portion of the currency risk exposure on anticipated cash inflows and outflows, including contractual outflows for our Potash expansion and other capital expenditures denominated in Canadian dollars. A stronger Canadian dollar generally reduces these entities' operating earnings. A weaker Canadian dollar has the opposite effect. Depending on the underlying exposure, such derivatives can create additional earnings volatility because we do not use hedge accounting. Gains or losses on these derivative contracts, both for open contracts at quarter end (unrealized) and settled contracts (realized), are recorded in either cost of goods sold or foreign currency transaction gain (loss).

The functional currency for our Brazilian subsidiaries is the Brazilian real. We finance our Brazilian inventory purchases with U.S. dollar denominated liabilities. A stronger Brazilian real relative to the U.S. dollar has the impact of reducing these liabilities on a functional currency basis. When this occurs, an associated foreign currency transaction gain is recorded as non-operating income. A weaker Brazilian real generally has the opposite effect. We also enter into derivative instruments for a portion of our currency risk exposure on anticipated cash flows, and record an associated gain or loss in the foreign currency transaction gain (loss) line in the Consolidated Statements of Earnings. A stronger Brazilian real generally reduces our Brazilian subsidiaries operating earnings. A weaker Brazilian real has the opposite effect.

As discussed above, we have Canadian dollar, Brazilian real, and other foreign currency exchange contracts. As of December 31, 2017 and 2016, the fair value of our major foreign currency exchange contracts were $9.4 million and ($6.5) million, respectively. We recorded an unrealized gain of $10.3 million in cost of goods sold and recorded an unrealized gain of $3.8 million in foreign currency transaction gain (loss) in the Consolidated Statements of Earnings for 2017.



The table below provides information about Mosaic’s significant foreign exchange derivatives.

<table><tr><td rowspan="2"></td><td colspan="3">As of December 31, 2017</td><td colspan="3">As of December 31, 2016</td></tr><tr><td colspan="2">Expected Maturity Date Years ending December 31,</td><td rowspan="2">Fair Value</td><td colspan="2">Expected Maturity Date Years ending December 31,</td><td rowspan="_</td></tr><tr><td>(in millions)</td><td>2018</td><td>2019</td><td>2017</td><td>2018</td><td>Fair Value</td></tr><tr><td>Foreign Currency Exchange Forwards</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Canadian Dollar</td><td></td><td></td><td>$ 12.3</td><td></td><td></td><td>$ (4.0)</td></tr><tr><td>Notional (million US) - long Canadian dollars</td><td>$ 444.4</td><td>$ 39.1</td><td></td><td>$ 361.4</td><td>$ 33.8</td><td></td></tr><tr><td>Weighted Average Rate - Canadian dollar to U.S. dollar</td><td>1.2850</td><td>1.2791</td><td></td><td>1.3282</td><td>1.3294</td><td></td></tr><tr><td>Foreign Currency Exchange Collars</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Canadian Dollar</td><td></td><td></td><td>$ —</td><td></td><td></td><td>$ (0.7)</td></tr><tr><td>Notional (million US) - long Canadian dollars</td><td>—</td><td>—</td><td></td><td>39.9</td><td>—</td><td></td></tr><tr><td>Weighted Average Participation Rate - Canadian dollar to U.S. dollar</td><td>—</td><td>—</td><td></td><td>1.3336</td><td>—</td><td></td></tr><tr><td>Weighted Average Protection Rate - Canadian dollar to U.S. dollar</td><td>—</td><td>—</td><td></td><td>1.2300</td><td>—</td><td></td></tr><tr><td>Foreign Currency Exchange Non-Deliverable Forwards</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Brazilian Real</td><td></td><td></td><td>$ 1.3</td><td></td><td></td><td>$ (1.8)</td></tr><tr><td>Notional (million US) - short Brazilian real</td><td>$ 174.9</td><td>$ —</td><td></td><td>$ 202.6</td><td>$ —</td><td></td></tr><tr><td>Weighted Average Rate - Brazilian real to U.S. dollar</td><td>3.3001</td><td>—</td><td></td><td>3.4237</td><td>—</td><td></td></tr><tr><td>Notional (million US) - long Brazilian real</td><td>$ 174.9</td><td>$ —</td><td></td><td>$ 186.7</td><td>$ —</td><td></td></tr><tr><td>Weighted Average Rate - Brazilian real to U.S. dollar</td><td>3.3414</td><td>—</td><td></td><td>3.6717</td><td>—</td><td></td></tr><tr><td>Indian Rupee</td><td></td><td></td><td>$ (4.2)</td><td></td><td></td><td>$ —</td></tr><tr><td>Notional (million US) - short Indian rupee</td><td>$ 196.0</td><td>$ —</td><td></td><td>$ 122.5</td><td>$ —</td><td></td></tr><tr><td>Weighted Average Rate - Indian rupee to U.S. dollar</td><td>65.8215</td><td>—</td><td></td><td>68.6216</td><td>—</td><td></td></tr><tr><td>Total Fair Value</td><td></td><td></td><td>$ 9.4</td><td></td><td></td><td>$ (6.5)</td></tr></table>

## Commodities

We use forward purchase contracts, swaps and occasionally three-way collars to reduce the risk related to significant price changes in our inputs and product prices. In addition, the natural gas-based pricing under the CF Ammonia Supply Agreement is intended to lessen ammonia pricing volatility.

All gains and losses on commodities contracts are recorded in cost of goods sold in the Consolidated Statements of Earnings.

As of December 31, 2017 and 2016, the fair value of our major commodities contracts were ($17.6) million and $6.0 million, respectively. We recorded an unrealized loss of $22.7 million in cost of goods sold on the Consolidated Statements of Earnings in 2017.

Our primary commodities exposure relates to price changes in natural gas.

The table below provides information about Mosaic’s natural gas derivatives which are used to manage the risk related to significant price changes in natural gas.



<table><tr><td rowspan="2"></td><td colspan="4">As of December 31, 2017</td><td colspan="4">As of December 31, 2016</td></tr><tr><td colspan="4">Expected Maturity Date Years ending December 31, 2018</td><td colspan="4">Expected Maturity Date Years ending December 31, 2017</td></tr><tr><td>(in millions)</td><td>2018</td><td>2019</td><td>2020</td><td>Fair Value</td><td>2017</td><td>2018</td><td>2019</td><td>Fair Value</td></tr><tr><td>Natural Gas Swaps</td><td></td><td></td><td></td><td>$ (17.6)</td><td></td><td></td><td></td><td>$ 6.0</td></tr><tr><td>Notional (million MMBtu) - long</td><td>18.2</td><td>19.9</td><td>5.0</td><td></td><td>12.1</td><td>4.8</td><td>4.8</td><td></td></tr><tr><td>Weighted Average Rate (US$/MMBtu)</td><td>$ 3.16</td><td>$ 3.01</td><td>$ 3.14</td><td></td><td>$ 2.62</td><td>$ 2.44</td><td>$ 2.43</td><td></td></tr><tr><td>Total Fair Value</td><td></td><td></td><td></td><td>$ (17.6)</td><td></td><td></td><td></td><td>$ 6.0</td></tr></table>

## Interest Rates

We manage interest expense through interest rate contracts to convert a portion of our fixed-rate debt into floating-rate debt. From time to time, we also enter into interest rate swap agreements to hedge our exposure to changes in future interest rates related to anticipated debt issuances. As of December 31, 2017 and 2016, the fair value of our interest rate contracts was ($2.2) million and $0.2 million, respectively. We recorded an immaterial unrealized gain in interest expense on the Consolidated Statements of Earnings for 2017.

## Summary

Overall, there have been no material changes in our primary market risk exposures since the prior year. In 2018, we expect our foreign currency risk related to the Brazilian real to increase as our exposure will be more significant due to the Acquisition. Additional information about market risk associated with our investments held in the RCRA Trusts is provided in Note 11 of our Notes to Consolidated Financial Statements. For additional information related to derivatives, see Notes 14 and 15 of our Notes to Consolidated Financial Statements.

## Environmental, Health, Safety and Security Matters

We are subject to an evolving complex of international, federal, state, provincial and local environmental, health, safety and security (“EHS”) laws that govern the production, distribution and use of crop nutrients and animal feed ingredients. These EHS laws regulate or propose to regulate: (i) conduct of mining, production and supply chain operations, including employee safety and facility security procedures; (ii) management and/or remediation of potential impacts to air, soil and water quality from our operations; (iii) disposal of waste materials; (iv) reclamation of lands after mining; (v) management and handling of raw materials; (vi) product content; and (vii) use of products by both us and our customers.

We have a comprehensive EHS management program that seeks to achieve sustainable, predictable and verifiable EHS performance. Key elements of our EHS program include: (i) identifying and managing EHS risk; (ii) complying with legal requirements; (iii) improving our EHS procedures and protocols; (iv) educating employees regarding EHS obligations; (v) retaining and developing professional qualified EHS staff; (vi) evaluating facility conditions; (vii) evaluating and enhancing safe workplace behaviors; (viii) performing audits; (ix) formulating EHS action plans; and (x) assuring accountability of all managers and other employees for EHS performance. Our business units are responsible for implementing day-to-day elements of our EHS program, assisted by an integrated staff of EHS professionals. We conduct audits to verify that each facility has identified risks, achieved regulatory compliance, implemented continuous EHS improvement, and incorporated EHS management systems into day-to-day business functions.

New or proposed regulatory programs can present significant challenges in ascertaining future compliance obligations, implementing compliance plans, and estimating future costs until implementing regulations have been finalized and definitive regulatory interpretations have been adopted. New or proposed regulatory requirements may require modifications to our facilities or to operating procedures and these modifications may involve significant capital costs or increases in operating costs.

We have expended, and anticipate that we will continue to expend, substantial financial and managerial resources to comply with EHS standards and to continue to improve our environmental stewardship. In 2018, excluding capital expenditures arising out of the consent decrees referred to under “EPA RCRA Initiative” in Note 13 of our Notes to Consolidated Financial Statements, we expect environmental capital expenditures to total approximately $160 million, primarily related to: (i) modification or construction of waste management infrastructure and water treatment systems; (ii) construction and



modification projects associated with Gypstacks and clay settling ponds at our Phosphates facilities and tailings management areas for our Potash mining and processing facilities; (iii) upgrading or new construction of air pollution control equipment at some of the concentrates plants; and (iv) capital projects associated with remediation of contamination at current or former operations. Additional expenditures for land reclamation, Gypstack closure and water treatment activities are expected to total approximately $110 million in 2018. In 2019, we estimate environmental capital expenditures will be approximately $170 million and expenditures for land reclamation activities, Gypstack closure and water treatment activities are expected to be approximately $110 million. In the years ended December 31, 2017 and 2016, we spent approximately $280 million and $310 million, respectively, for environmental capital expenditures, land reclamation activities, Gypstack closure and water treatment activities. No assurance can be given that greater-than-anticipated EHS capital expenditures or land reclamation, Gypstack closure or water treatment expenditures will not be required in 2018 or in the future.

## Operating Requirements and Impacts

Permitting. We hold numerous environmental, mining and other permits and approvals authorizing operations at each of our facilities. Our ability to continue operations at a facility could be materially affected by a government agency decision to deny or delay issuing a new or renewed permit or approval, to revoke or substantially modify an existing permit or approval or to substantially change conditions applicable to a permit modification, or by legal actions that successfully challenge our permits.

Expanding our operations or extending operations into new areas is also predicated upon securing the necessary environmental or other permits or approvals. We have been engaged in, and over the next several years will be continuing, efforts to obtain permits in support of our anticipated Florida mining operations at certain of our properties. For years, we have successfully permitted mining properties and anticipate that we will be able to permit these properties as well.

A denial of our permits, the issuance of permits with cost-prohibitive conditions, substantial delays in issuing key permits, legal actions that prevent us from relying on permits or revocation of permits can prevent or delay our mining at the affected properties and thereby materially affect our business, results of operations, liquidity or financial condition.

In addition, in Florida, local community involvement has become an increasingly important factor in the permitting process for mining companies, and various counties and other parties in Florida have in the past filed and continue to file lawsuits challenging the issuance of some of the permits we require. These actions can significantly delay permit issuance. Additional information regarding certain potential or pending permit challenges is provided in Note 21 to our Consolidated Financial Statements and is incorporated herein by reference.

Waters of the United States. In April 2014, EPA and the U.S. Army Corps of Engineers (the “Corps”) jointly issued a proposed rule that would redefine the scope of waters regulated under the federal Clean Water Act. The final rule (the “Clean Water Rule”) became effective in August 2015, but has been challenged through numerous lawsuits. In October 2015, the U.S. Court of Appeals for the Sixth Circuit issued an order staying the effectiveness of the final rule until after the legal validity of the regulation is resolved. In early 2017, the U.S. President issued an Executive Order directing EPA and the Corps to publish a proposed rule rescinding or revising the new rule, and in June 2017 EPA and the Corps issued a proposed rule that would rescind the Clean Water Rule and re-codeify regulatory text that existed prior to enactment of the Clean Water Rule. In November 2017, EPA issued a rule notice proposing to extend the applicability date of the Clean Water Rule for two years from the date of final action on the proposed rule, to provide continuity and regulatory certainty while agencies proceed to consider potential changes to the Clean Water Rule. We believe the Clean Water Rule, if not rescinded, would expand the types and extent of water resources regulated under federal law, thereby potentially expanding our permitting and reporting requirements, increasing our costs of compliance, including costs associated with wetlands and stream mitigation, lengthening the time necessary to obtain permits, and potentially restricting our ability to mine certain of our phosphate rock reserves.

Water Quality Regulations for Nutrient Discharges. New nutrient regulatory initiatives could have a material effect on either us or our customers. For example, the Gulf Coast Ecosystem Restoration Task Force, established by executive order of the President and comprised of five Gulf states and eleven federal agencies, has delivered a final strategy for long-term ecosystem restoration for the Gulf Coast. The strategy calls for, among other matters, reduction of the flow of excess nutrients into the Gulf of Mexico through state nutrient reduction frameworks, new nutrient reduction approaches and reduction of agricultural and urban sources of excess nutrients. Implementation of the strategy will require legislative or regulatory action at the state level. We cannot predict what the requirements of any such legislative or regulatory action could be or whether or how it would affect us or our customers.



Reclamation Obligations. During our phosphate mining operations, we remove overburden in order to retrieve phosphate rock reserves. Once we have finished mining in an area, we use the overburden and sand tailings produced by the beneficiation process to reclaim the area in accordance with approved reclamation plans and applicable laws. We have incurred and will continue to incur significant costs to fulfill our reclamation obligations.

Management of Residual Materials and Closure of Management Areas. Mining and processing of potash and phosphate generate residual materials that must be managed both during the operation of the facility and upon facility closure. Potash tailings, consisting primarily of salt and clay, are stored in surface disposal sites. Phosphate clay residuals from mining are deposited in clay settling ponds. Processing of phosphate rock with sulfuric acid generates phosphogypsum that is stored in Gypstacks.

During the life of the tailings management areas, clay settling ponds and Gypstacks, we have incurred and will continue to incur significant costs to manage our potash and phosphate residual materials in accordance with environmental laws and regulations and with permit requirements. Additional legal and permit requirements will take effect when these facilities are closed. Our asset retirement obligations are further discussed in Note 13 of our Notes to Consolidated Financial Statements.

New Wales Water Loss Incident. In August 2016, a sinkhole developed under one of the two cells of the active Gypstack at our New Wales facility in Polk County, Florida, resulting in process water from the stack draining into the sinkhole. The incident was reported to the FDEP and EPA and in connection with the incident, our subsidiary, Mosaic Fertilizer, LLC (“Mosaic Fertilizer”), entered into a consent order (the “Order”) with the FDEP in October 2016 under which Mosaic Fertilizer agreed to, among other things, implement an approved remediation plan to close the sinkhole; perform additional water monitoring and if necessary, assessment and rehabilitation activities in the event of identified off-site impacts; provide financial assurance; and evaluate the risk of potential future sinkhole formation at our active Florida Gypstack operations. The incident and the Order are further discussed in Note 21 of our Notes to Consolidated Financial Statements.

Financial Assurance. Separate from our accounting treatment for reclamation and closure liabilities, some jurisdictions in which we operate have required us either to pass a test of financial strength or provide credit support, typically cash deposits, surety bonds, financial guarantees or letters of credit, to address phosphate mining reclamation liabilities and closure liabilities for clay settling areas and Gypstacks. See “Other Commercial Commitments” under “Off-Balance Sheet Arrangements and Obligations” above for additional information about these requirements. We also have obligations under certain consent decrees and a separate financial assurance arrangement relating to our facilities in Florida and Louisiana. Two consent decrees that became effective in 2016 resolved claims under the U.S. Resource Conservation and Recovery Act and state hazardous waste laws relating to our management of certain waste materials onsite at certain fertilizer manufacturing facilities in Florida and Louisiana. Under these consent decrees, in 2016 we deposited $630 million in cash into two trust funds to provide additional financial assurance for the estimated costs of closure and post-closure care of our phosphogypsum management systems. In addition, in 2017, we issued a letter of credit in the amount of $50 million to further support our financial assurance obligation under the Florida 2015 Consent Decree. While our actual Gypstack Closure Costs are generally expected to be paid by us in the normal course of our Phosphates business over a period that may not end until three decades or more after a Gypstack has been closed, the funds on deposit in the RCRA Trusts can be drawn by the applicable governmental authority in the event we cannot perform our closure and long term care obligations. If and when our estimated Gypstack Closure Costs with respect to the facilities associated with a RCRA Trust are sufficiently lower than the amount on deposit in that RCRA Trust, we have the right to request that the excess funds be released to us. The same is true for the RCRA Trust balance remaining after the completion of our obligations, which will be performed over a period that may not end until three decades or more after a Gypstack has been closed. See the discussion under “EPA RCRA Initiative” in Note 13 of our Notes to Consolidated Financial Statements for additional information about these matters.

We have accepted a proposal by the Province of Saskatchewan under which we would establish a trust valued at $25 million (Canadian dollars) in satisfaction of financial assurance requirements for closure of our Saskatchewan potash facilities. The trust is to be fully funded by us by 2021 in equal annual installments which began in July 2014.

In January 2017 proposed rules were issued under the U.S. Comprehensive Environmental Response, Compensation, and Liability Act, commonly known as CERCLA or the Superfund law, that would require owners and operators of certain classes of hardrock mines and mineral processing facilities to demonstrate financial ability to cover potential costs of future cleanup efforts for their operations and costs of health assessments and natural resource damage. As proposed, the rules would apply to phosphate mining, phosphate fertilizer manufacturing and potash mining operations. In December 2017, EPA issued the final rule for hardrock mining, concluding that no financial assurance under CERCLA was required for the sector. Supporters of financial responsibility for hardrock mines and mineral processing facilities may challenge that rule. EPA has announced



it will undertake similar rulemaking in phases for three additional sectors, including chemical manufacturing. We cannot predict at this time when EPA will issue proposed rules or what, if any, financial assurance requirements may ultimately be developed or required for our operations. Accordingly, we cannot predict the prospective impact of any such financial responsibility requirements on our results of operations, liquidity or capital resources, or whether any such effects could be material to us.

## Climate Change

We are committed to finding ways to meet the challenges of crop nutrient and animal feed ingredient production and distribution in the context of the need to reduce greenhouse gas emissions. While focused on helping the world grow the food it needs, we have proven our commitment to using our resources more efficiently and have implemented innovative energy recovery technologies that result in our generation of much of the energy we need, particularly in our U.S. Phosphates operations, from high efficiency heat recovery systems that result in lower greenhouse gas emissions.

Climate Change Regulation. Various governmental initiatives to limit greenhouse gas emissions are under way or under consideration around the world. These initiatives could restrict our operating activities, require us to make changes in our operating activities that would increase our operating costs, reduce our efficiency or limit our output, require us to make capital improvements to our facilities, increase our energy, raw material and transportation costs or limit their availability, or otherwise adversely affect our results of operations, liquidity or capital resources, and these effects could be material to us.

The direct greenhouse gas emissions from our operations result primarily from:

- Combustion of natural gas to produce steam and dry potash products at our Belle Plaine, Saskatchewan, potash solution mine. To a lesser extent, at our potash shaft mines, natural gas is used as a fuel to heat fresh air supplied to the shaft mines and for drying potash products.

• The use of natural gas as a feedstock in the production of ammonia at our Faustina, Louisiana phosphates plant.

• Process reactions from naturally occurring carbonates in phosphate rock.

In addition, the production of energy and raw materials that we purchase from unrelated parties for use in our business and energy used in the transportation of our products and raw materials are sources of greenhouse gas emissions.

Governmental greenhouse gas emission initiatives include, among others, the December 2015 agreement (the “Paris Agreement”) which was the outcome of the 21 \( ^{st} \)  session of the Conference of the Parties under the United Nations Framework Convention on Climate Change. The Paris Agreement, which was signed by nearly 200 nations including the United States and Canada, entered into force in late 2016 and sets out a goal of limiting the average rise in temperatures for this century to below 2 degrees Celsius. Each signatory is expected to develop its own plan (referred to as a Nationally Determined Contribution, or “NDC”) for reaching that goal.

In May 2017, the U.S. President announced that the United States would withdraw from the Paris Agreement. Under Article 28 of that agreement, the earliest such a withdrawal could be effective is November 2020. In 2015, prior to this announcement, the United States had submitted an NDC aiming to achieve, by 2025, an economy-wide target of reducing greenhouse gas emissions by 26-28% below its 2005 level. The NDC also aims to use best efforts to reduce emissions by 28%. The U.S. target covers all greenhouse gases that were a part of the 2014 Inventory of Greenhouse Gas Emissions and Sinks. While it is unclear whether the U.S. executive administration will proceed to withdraw from the Paris Agreement, various legislative or regulatory initiatives relating to greenhouse gases have been adopted or considered by the U.S. Congress, EPA or various states and those initiatives already adopted may be used to implement the U.S. NDC. Additionally, more stringent laws and regulations may be enacted to accomplish the goals set out in the NDC.

Canada’s intended NDC aims to achieve, by 2030, an economy-wide target of reducing greenhouse gas emissions by 30% below 2005 levels. In late 2016 the federal government announced plans for a comprehensive tax on carbon emissions, under which provinces opting out of the tax would have the option of adopting a cap-and-trade system. In the plans, the federal government also committed to implementing a federal carbon pricing backstop system that will apply in any province or territory that does not have a carbon pricing system in place by 2018. While no tax has formally been proposed, as implementation of the Paris Agreement proceeds, more stringent laws and regulations may be enacted to accomplish the goals set out in Canada’s NDC. In addition, the Province of Saskatchewan, in which our Canadian potash mines are located, has stated that a carbon pricing system will not be implemented in the province and that legal action will be sought against the federal government, if necessary. In December 2017, Saskatchewan announced a comprehensive plan to address climate



change that does not include an economy-wide price on carbon but does include a system of tariffs and credits for large emitters. The plan is subject to federal review and approval in late 2018. Our Saskatchewan Potash facilities will continue to work with the Saskatchewan Ministry of Environment and Environment and Climate Change Canada, through participation in industry associations, to determine next steps. We will also continue to monitor developments relating to the anticipated proposed legislation, as well as the potential future effect on our operating activities, energy, raw material and transportation costs, results of operations, liquidity or capital resources.

It is possible that future legislation or regulation addressing climate change, including in response to the Paris Agreement or any new international agreements, could adversely affect our operating activities, energy, raw material and transportation costs, results of operations, liquidity or capital resources, and these effects could be material or adversely impact our competitive advantage. In addition, to the extent climate change restrictions imposed in countries where our competitors operate, such as China, India, Former Soviet Union countries or Morocco, are less stringent than in the United States or Canada, our competitors could gain cost or other competitive advantages over us.

Operating Impacts Due to Climate Change. The prospective impact of climate change on our operations and those of our customers and farmers remains uncertain. Scientists have hypothesized that the impacts of climate change could include changes in rainfall patterns, water shortages, changing sea levels, changing storm patterns and intensities, and changing temperature levels and that these changes could be severe. These impacts could vary by geographic location. Severe climate change could impact our costs and operating activities, the location and cost of global grain and oilseed production, and the supply and demand for grains and oilseeds. At the present time, we cannot predict the prospective impact of climate change on our results of operations, liquidity or capital resources, or whether any such effects could be material to us.

## Remedial Activities

CERCLA (aka Superfund) and state analogues impose liability, without regard to fault or to the legality of a party’s conduct, on certain categories of persons, including those who have disposed of “hazardous substances” at a third-party location. Under Superfund, or its various state analogues, one party may be responsible for the entire site, regardless of fault or the locality of its disposal activity. We have contingent environmental remedial liabilities that arise principally from three sources which are further discussed below: (i) facilities currently or formerly owned by our subsidiaries or their predecessors; (ii) facilities adjacent to currently or formerly owned facilities; and (iii) third-party Superfund or state equivalent sites where we are alleged to have disposed of hazardous materials. Taking into consideration established accruals for environmental remedial matters of approximately $35.1 million as of December 31, 2017, expenditures for these known conditions currently are not expected, individually or in the aggregate, to have a material effect on our business or financial condition. However, material expenditures could be required in the future to remediate the contamination at known sites or at other current or former sites.

Remediation at Our Facilities. Many of our formerly owned or current facilities have been in operation for a number of years. The historical use and handling of regulated chemical substances, crop and animal nutrients and additives as well as by-product or process tailings at these facilities by us and predecessor operators have resulted in soil, surface water and groundwater impacts.

At many of these facilities, spills or other releases of regulated substances have occurred previously and potentially could occur in the future, possibly requiring us to undertake or fund cleanup efforts under Superfund or otherwise. In some instances, we have agreed, pursuant to consent orders or agreements with the appropriate governmental agencies, to undertake certain investigations, which currently are in progress, to determine whether remedial action may be required to address site impacts. At other locations, we have entered into consent orders or agreements with appropriate governmental agencies to perform required remedial activities that will address identified site conditions. Taking into account established accruals, future expenditures for these known conditions currently are not expected, individually or in the aggregate, to have a material adverse effect on our business or financial condition. However, material expenditures by us could be required in the future to remediate the environmental impacts at these or at other current or former sites.

Remediation at Third-Party Facilities. Various third parties have alleged that our historical operations have impacted neighboring off-site areas or nearby third-party facilities. In some instances, we have agreed, pursuant to orders from or agreements with appropriate governmental agencies or agreements with private parties, to undertake or fund investigations, some of which currently are in progress, to determine whether remedial action, under Superfund or otherwise, may be required to address off-site impacts. Our remedial liability at these sites, either alone or in the aggregate, taking into account



established accruals, currently is not expected to have a material adverse effect on our business or financial condition. As more information is obtained regarding these sites, this expectation could change.

Liability for Off-Site Disposal Locations. Currently, we are involved or concluding involvement for off-site disposal at several Superfund or equivalent state sites. Moreover, we previously have entered into settlements to resolve liability with regard to Superfund or equivalent state sites. In some cases, such settlements have included “reopeners,” which could result in additional liability at such sites in the event of newly discovered contamination or other circumstances. Our remedial liability at such disposal sites, either alone or in the aggregate, currently is not expected to have a material adverse effect on our business or financial condition. As more information is obtained regarding these sites and the potentially responsible parties involved, this expectation could change.

## Product Requirements and Impacts

International, federal, state and provincial standards require us to register many of our products before these products can be sold. The standards also impose labeling requirements on these products and require us to manufacture the products to formulations set forth on the labels. We believe that, when handled and used as intended, based on the available data, crop nutrient materials do not pose harm to human health or the environment and that any additional standards or regulatory requirements relating to product requirements and impacts will not have a material adverse effect on our business or financial condition.

## Additional Information

For additional information about phosphate mine permitting in Florida, our environmental liabilities, the environmental proceedings in which we are involved, our asset retirement obligations related to environmental matters, and our related accounting policies, see Environmental Liabilities and AROs under Critical Accounting Estimates above and Notes 2, 13, and 21 of our Notes to Consolidated Financial Statements.

## Sustainability

We are committed to making informed choices that improve our corporate governance, financial strength, operational efficiency, environmental stewardship, community engagement and resource management. Through these efforts, we intend to sustain our business and experience lasting success.

We have included, or incorporate by reference, throughout this annual report on Form 10-K discussions of various matters relating to our sustainability, in its broadest sense, that we believe may be material to our investors. These matters include but are not limited to discussions about: corporate governance including the leadership and respective roles of our Board of Directors, its committees and management as well as succession planning; recent and prospective developments in our business; product development; risk, enterprise risk management and risk oversight; the regulatory and permitting environment for our business and ongoing regulatory and permitting initiatives; executive compensation practices; employee and contractor safety; and other EHS matters including climate change, water management, energy and other operational efficiency initiatives, reclamation and asset retirement obligations. Other matters relating to sustainability are included in our sustainability reports that are available on our website at www.mosaicco.com/sustainability. Our sustainability reports are not incorporated by reference in this annual report on Form 10-K.

## Contingencies

Information regarding contingencies in Note 21 of our Notes to Consolidated Financial Statements is incorporated herein by reference.

## Related Parties

Information regarding related party transactions is set forth in Note 22 of our Notes to Consolidated Financial Statements and is incorporated herein by reference.

## Recently Issued Accounting Guidance

Recently issued accounting guidance is set forth in Note 3 of our Notes to Consolidated Financial Statements and is incorporated herein by reference.



## Forward-Looking Statements

## Cautionary Statement Regarding Forward Looking Information

All statements, other than statements of historical fact, appearing in this report constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements include, among other things, statements about our expectations, beliefs, intentions or strategies for the future, including statements about the anticipated benefits and synergies of our acquisition of the global phosphate and potash operations of Vale S.A. conducted through Vale Fertilizantes S.A. (the “Acquisition”), statements about MWSPC and its nature, impact and benefits, statements about other proposed or pending future transactions or strategic plans, statements concerning our future operations, financial condition and prospects, statements regarding our expectations for capital expenditures, statements concerning our level of indebtedness and other information, and any statements of assumptions regarding any of the foregoing. In particular, forward-looking statements may include words such as “anticipate”, “believe”, “could”, “estimate”, “expect”, “intend”, “may”, “potential”, “predict”, “project” or “should”. These statements involve certain risks and uncertainties that may cause actual results to differ materially from expectations as of the date of this filing.

Factors that could cause reported results to differ materially from those expressed or implied by the forward-looking statements include, but are not limited to, the following:

• difficulties with realization of the benefits and synergies of the Acquisition, including the risks that the acquired business may not be integrated successfully or that the anticipated synergies or cost or capital expenditure savings from the Acquisition may not be fully realized or may take longer to realize than expected, including because of political and economic instability in Brazil or changes in government policy in Brazil;

• business and economic conditions and governmental policies affecting the agricultural industry where we or our customers operate, including price and demand volatility resulting from periodic imbalances of supply and demand;

• changes in farmers’ application rates for crop nutrients;

• changes in the operation of world phosphate or potash markets, including continuing consolidation in the crop nutrient industry, particularly if we do not participate in the consolidation;

• pressure on prices realized by us for our products;

- the expansion or contraction of production capacity or selling efforts by competitors or new entrants in the industries in which we operate, including the effects of actions by members of Canpotex to prove the production capacity of potash expansion projects, through proving runs or otherwise;

- the expected cost of MWSPC and our expected investment in it, the amount, terms, availability and sufficiency of funding for MWSPC from us, Ma’aden, SABIC and existing or future external sources, the performance of MWSPC and its ability to obtain additional planned funding in acceptable amounts and upon acceptable terms, the timely development and commencement of operations of production facilities in the Kingdom of Saudi Arabia, political and economic instability in the region, and in general the future success of current plans for the joint venture and any future changes in those plans;

• build-up of inventories in the distribution channels for our products that can adversely affect our sales volumes and selling prices;

• the effect of future product innovations or development of new technologies on demand for our products;

• seasonality in our business that results in the need to carry significant amounts of inventory and seasonal peaks in working capital requirements, and may result in excess inventory or product shortages;

• changes in the costs, or constraints on supplies, of raw materials or energy used in manufacturing our products, or in the costs or availability of transportation for our products;

• declines in our selling prices or significant increases in costs that can require us to write down our inventories to the lower of cost or market, or require us to impair goodwill or other long-lived assets, or establish a valuation allowance against deferred tax assets;

- the effects on our customers of holding high cost inventories of crop nutrients in periods of rapidly declining market prices for crop nutrients;



- the lag in realizing the benefit of falling market prices for the raw materials we use to produce our products that can occur while we consume raw materials that we purchased or committed to purchase in the past at higher prices;

• customer expectations about future trends in the selling prices and availability of our products and in farmer economics;

- disruptions to existing transportation or terminaling facilities, including those of Canpotex or any joint venture in which we participate;

• shortages or other unavailability of railcars, tugs, barges and ships for carrying our products and raw materials;

• the effects of and change in trade, monetary, environmental, tax and fiscal policies, laws and regulations;

• foreign exchange rates and fluctuations in those rates;

- tax regulations, currency exchange controls and other restrictions that may affect our ability to optimize the use of our liquidity;

- other risks associated with our international operations, including any potential adverse effects related to our joint venture interest in the Miski Mayo mine in the event that protests against natural resource companies in Peru were to extend to or impact the Miski Mayo mine;

• adverse weather conditions affecting our operations, including the impact of potential hurricanes, excessive heat, cold, snow or rainfall, or drought;

• difficulties or delays in receiving, challenges to, increased costs of obtaining or satisfying conditions of, or revocation or withdrawal of required governmental and regulatory approvals, including permitting activities;

- changes in the environmental and other governmental regulation that applies to our operations, including federal legislation or regulatory action expanding the types and extent of water resources regulated under federal law and the possibility of further federal or state legislation or regulatory action affecting or related to greenhouse gas emissions, including carbon taxes or other measures that may be proposed in Canada or other jurisdictions in which we operate, or of restrictions or liabilities related to elevated levels of naturally-occurring radiation that arise from disturbing the ground in the course of mining activities or possible efforts to reduce the flow of nutrients into the Gulf of Mexico, the Mississippi River basin or elsewhere;

- the potential costs and effects of implementation of federal or state water quality standards for the discharge of nitrogen and/or phosphorus into Florida waterways;

- the financial resources of our competitors, including state-owned and government-subsidized entities in other countries;

- the possibility of defaults by our customers on trade credit that we extend to them or on indebtedness that they incur to purchase our products and that we guarantee, particularly when we are exiting our business operations or locations that produced or sold the products to that customer;

• any significant reduction in customers’ liquidity or access to credit that they need to purchase our products;

• the effectiveness of our risk management strategy;

- the effectiveness of the processes we put in place to manage our significant strategic priorities, including the expansion of our Potash business and our investment in MWSPC, and to successfully integrate and grow acquired businesses;

- actual costs of various items differing from management’s current estimates, including, among others, asset retirement, environmental remediation, reclamation or other environmental obligations and Canadian resource taxes and royalties, or the costs of MWSPC, its existing or future funding and our commitments in support of such funding;

- the costs and effects of legal and administrative proceedings and regulatory matters affecting us, including environmental, tax or administrative proceedings, complaints that our past or current operations are adversely impacting nearby farms, businesses, other property uses or properties, settlements thereof and actions taken by courts with respect to approvals of settlements, resolution of global tax audit activity, and other further developments in legal proceedings and regulatory matters;



• the success of our efforts to attract and retain highly qualified and motivated employees;

• strikes, labor stoppages or slowdowns by our work force or increased costs resulting from unsuccessful labor contract negotiations, and the potential costs and effects of compliance with new regulations affecting our workforce, which increasingly focus on wages and hours, healthcare, retirement and other employee benefits;

• brine inflows at our Esterhazy, Saskatchewan, potash mine as well as potential inflows at our other shaft mines;

• accidents or other incidents involving our properties or operations, including potential fires, explosions, seismic events, sinkholes, unsuccessful tailings management or releases of hazardous or volatile chemicals;

• terrorism or other malicious intentional acts, including cybersecurity risks such as attempts to gain unauthorized access to, or disable, our information technology systems, or our costs of addressing malicious intentional acts;

• other disruptions of operations at any of our key production and distribution facilities, particularly when they are operating at high operating rates;

• changes in antitrust and competition laws or their enforcement;

• actions by the holders of controlling equity interests in businesses in which we hold a noncontrolling interest;

• changes in our relationships with the other member of Canpotex or any joint venture in which we participate or their or our exit from participation in Canpotex or any such export association or joint venture, and other changes in our commercial arrangements with unrelated third parties;

• the adequacy of our property, business interruption and casualty insurance policies to cover potential hazards and risks incident to our business, and our willingness and ability to maintain current levels of insurance coverage as a result of market conditions, our loss experience and other factors;

• difficulties in realizing benefits under our long-term natural gas based pricing ammonia supply agreement with an affiliate of CF Industries, Inc., including the risks that the cost savings initially anticipated from the agreement may not be fully realized over the term of the agreement or that the price of natural gas or the market price for ammonia during the agreement’s term are at levels at which the agreement’s natural gas based pricing is disadvantageous to us, compared with purchases in the spot market; and

• other risk factors reported from time to time in our Securities and Exchange Commission reports.

Material uncertainties and other factors known to us are discussed in Item 1A, “Risk Factors,” of our annual report on Form 10-K for the year ended December 31, 2017, and incorporated by reference herein as if fully stated herein.

We base our forward-looking statements on information currently available to us, and we undertake no obligation to update or revise any of these statements, whether as a result of changes in underlying factors, new information, future events or other developments.



# Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors

The Mosaic Company:

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of The Mosaic Company and subsidiaries (the “Company”) as of December 31, 2017 and 2016, the related consolidated statements of earnings, comprehensive income, cash flows, and equity for each of the years in the three-year period ended December 31, 2017, and the related notes and Schedule II-Valuation and Qualifying Accounts (collectively, the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2017 and 2016, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2017, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the Company’s internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission, and our report dated February 20, 2018, expressed an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting.

## Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

/s/ KPMG LLP

We have served as the Company’s auditor since 2004.

Minneapolis, Minnesota

February 20, 2018



# Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors

The Mosaic Company:

Opinion on Internal Control Over Financial Reporting

We have audited The Mosaic Company’s and subsidiaries’ (the “Company”) internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the consolidated balance sheets of the Company as of December 31, 2017 and 2016, the related consolidated statements of earnings, comprehensive income, cash flows, and equity for each of the years in the three-year period ended December 31, 2017, and the related notes and Schedule II-Valuation and Qualifying Accounts (collectively, the consolidated financial statements), and our report dated February 20, 2018, expressed an unqualified opinion on those financial statements.

## Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

## Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ KPMG LLP

Minneapolis, Minnesota

February 20, 2018



## Consolidated Statements of Earnings
In millions, except per share amounts

<table><tr><td rowspan="2"></td><td colspan="3">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Net sales</td><td>$ 7,409.4</td><td>$ 7,162.8</td><td>$ 8,895.3</td></tr><tr><td>Cost of goods sold</td><td>6,566.6</td><td>6,352.8</td><td>7,177.4</td></tr><tr><td>Gross margin</td><td>842.8</td><td>810.0</td><td>1,717.9</td></tr><tr><td>Selling, general and administrative expenses</td><td>301.3</td><td>304.2</td><td>361.2</td></tr><tr><td>Other operating expenses</td><td>75.8</td><td>186.8</td><td>77.9</td></tr><tr><td>Operating earnings</td><td>465.7</td><td>319.0</td><td>1,278.8</td></tr><tr><td>Interest expense, net</td><td>(138.1)</td><td>(112.4)</td><td>(97.8)</td></tr><tr><td>Foreign currency transaction gain (loss)</td><td>49.9</td><td>40.1</td><td>(60.5)</td></tr><tr><td>Other expense</td><td>(3.5)</td><td>(4.3)</td><td>(17.2)</td></tr><tr><td>Earnings from consolidated companies before income taxes</td><td>374.0</td><td>242.4</td><td>1,103.3</td></tr><tr><td>Provision for (benefit from) income taxes</td><td>494.9</td><td>(74.2)</td><td>99.1</td></tr><tr><td>(Loss) earnings from consolidated companies</td><td>(120.9)</td><td>316.6</td><td>1,004.2</td></tr><tr><td>Equity in net earnings (loss) of nonconsolidated companies</td><td>16.7</td><td>(15.4)</td><td>(2.4)</td></tr><tr><td>Net (loss) earnings including noncontrolling interests</td><td>(104.2)</td><td>301.2</td><td>1,001.8</td></tr><tr><td>Less: Net earnings attributable to noncontrolling interests</td><td>3.0</td><td>3.4</td><td>1.4</td></tr><tr><td>Net (loss) earnings attributable to Mosaic</td><td>(107.2)</td><td>297.8</td><td>1,000.4</td></tr><tr><td>Basic net (loss) earnings per share attributable to Mosaic</td><td>(0.31)</td><td>0.85</td><td>2.79</td></tr><tr><td>Basic weighted average number of shares outstanding</td><td>350.9</td><td>350.4</td><td>358.5</td></tr><tr><td>Diluted net (loss) earnings per share attributable to Mosaic</td><td>(0.31)</td><td>0.85</td><td>2.78</td></tr><tr><td>Diluted weighted average number of shares outstanding</td><td>350.9</td><td>351.7</td><td>360.3</td></tr></table>

See Accompanying Notes to Consolidated Financial Statements



## Consolidated Statements of Comprehensive Income
In millions

<table><tr><td rowspan="2"></td><td colspan="4">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td></td></tr><tr><td>Net (loss) earnings including noncontrolling interest</td><td>$ (104.2)</td><td>$ 301.2</td><td>$ 1,001.8</td><td></td></tr><tr><td>Other comprehensive income (loss), net of tax</td><td></td><td></td><td></td><td></td></tr><tr><td>Foreign currency translation gain (loss), net of tax (expense) benefit of ($11.4), $9.8 and $85.4, respectively</td><td>240.5</td><td>192.3</td><td>(1,027.1)</td><td></td></tr><tr><td>Net actuarial gain (loss) and prior service cost, net of tax (expense) benefit of ($2.1), $3.1, and $1.0, respectively</td><td>6.3</td><td>(3.2)</td><td>1.0</td><td></td></tr><tr><td>Realized gain on interest rate swap, net of tax expense of $0.7, $1.0 and $0.6, respectively</td><td>1.7</td><td>1.5</td><td>2.0</td><td></td></tr><tr><td>Net gain (loss) on marketable securities held in trust fund, net of tax (expense) benefit of ($1.0), $3.3 and $0.0, respectively</td><td>1.7</td><td>(7.8)</td><td>—</td><td></td></tr><tr><td>Other comprehensive income (loss)</td><td>250.2</td><td>182.8</td><td>(1,024.1)</td><td></td></tr><tr><td>Comprehensive income (loss)</td><td>146.0</td><td>484.0</td><td>(22.3)</td><td></td></tr><tr><td>Less: Comprehensive income (loss) attributable to noncontrolling interest</td><td>2.6</td><td>5.5</td><td>(3.5)</td><td></td></tr><tr><td>Comprehensive income (loss) attributable to Mosaic</td><td>$ 143.4</td><td>$ 478.5</td><td>$ (18.8)</td><td></td></tr></table>

See Accompanying Notes to Consolidated Financial Statements



## Consolidated Balance Sheets
In millions, except per share amounts

<table><tr><td rowspan="2"></td><td colspan="2">December 31,</td></tr><tr><td>2017</td><td>2016</td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current assets:</td><td></td><td></td></tr><tr><td>Cash and cash equivalents</td><td>$ 2,153.5</td><td>$ 673.1</td></tr><tr><td>Receivables, net</td><td>642.6</td><td>627.8</td></tr><tr><td>Inventories</td><td>1,547.2</td><td>1,391.1</td></tr><tr><td>Other current assets</td><td>273.2</td><td>365.7</td></tr><tr><td>Total current assets</td><td>4,616.5</td><td>3,057.7</td></tr><tr><td>Property, plant and equipment, net</td><td>9,711.7</td><td>9,198.5</td></tr><tr><td>Investments in nonconsolidated companies</td><td>1,089.5</td><td>1,063.1</td></tr><tr><td>Goodwill</td><td>1,693.6</td><td>1,630.9</td></tr><tr><td>Deferred income taxes</td><td>254.6</td><td>836.4</td></tr><tr><td>Other assets</td><td>1,267.5</td><td>1,054.1</td></tr><tr><td>Total assets</td><td>$ 18,633.4</td><td>$ 16,840.7</td></tr><tr><td>Liabilities and Equity</td><td></td><td></td></tr><tr><td>Current liabilities:</td><td></td><td></td></tr><tr><td>Short-term debt</td><td>$ 6.1</td><td>$ 0.1</td></tr><tr><td>Current maturities of long-term debt</td><td>343.5</td><td>38.8</td></tr><tr><td>Structured accounts payable arrangements</td><td>386.2</td><td>128.8</td></tr><tr><td>Accounts payable</td><td>540.9</td><td>471.8</td></tr><tr><td>Accrued liabilities</td><td>754.4</td><td>837.3</td></tr><tr><td>Total current liabilities</td><td>2,031.1</td><td>1,476.8</td></tr><tr><td>Long-term debt, less current maturities</td><td>4,878.1</td><td>3,779.3</td></tr><tr><td>Deferred income taxes</td><td>1,117.3</td><td>1,009.2</td></tr><tr><td>Other noncurrent liabilities</td><td>967.8</td><td>952.9</td></tr><tr><td>Equity:</td><td></td><td></td></tr><tr><td>Preferred stock, $0.01 par value, 15,000,000 shares authorized, none issued and outstanding as of December 31, 2017 and 2016</td><td>—</td><td>—</td></tr><tr><td>Common stock, $0.01 par value, 1,000,000,000 shares authorized, 388,998,498 shares issued and 351,049,649 shares outstanding as of December 31, 2017, 388,187,398 shares issued and 350,238,549 shares outstanding as of December 31, 2016</td><td>3.5</td><td>3.5</td></tr><tr><td>Capital in excess of par value</td><td>44.5</td><td>29.9</td></tr><tr><td>Retained earnings</td><td>10,631.1</td><td>10,863.4</td></tr><tr><td>Accumulated other comprehensive loss</td><td>(1,061.6)</td><td>(1,312.2)</td></tr><tr><td>Total Mosaic stockholders&#x27; equity</td><td>9,617.5</td><td>9,584.6</td></tr><tr><td>Non-controlling interests</td><td>21.6</td><td>37.9</td></tr><tr><td>Total equity</td><td>9,639.1</td><td>9,622.5</td></tr><tr><td>Total liabilities and equity</td><td>$ 18,633.4</td><td>$ 16,840.7</td></tr></table>

See Accompanying Notes to Consolidated Financial Statements



## Consolidated Statements of Cash Flows
In millions, except per share amounts

<table><tr><td rowspan="2">Cash Flows from Operating Activities</td><td colspan="3">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Net earnings including noncontrolling interests</td><td>$ (104.2)</td><td>$ 301.2</td><td>$ 1,001.8</td></tr><tr><td>Adjustments to reconcile net earnings including noncontrolling interests to net cash provided by operating activities:</td><td></td><td></td><td></td></tr><tr><td>Depreciation, depletion and amortization</td><td>665.5</td><td>711.2</td><td>739.8</td></tr><tr><td>Deferred and other income taxes</td><td>612.4</td><td>(182.6)</td><td>47.4</td></tr><tr><td>Equity in net loss of nonconsolidated companies, net of dividends</td><td>34.4</td><td>32.6</td><td>28.0</td></tr><tr><td>Accretion expense for asset retirement obligations</td><td>25.7</td><td>40.4</td><td>32.4</td></tr><tr><td>Share-based compensation expense</td><td>28.0</td><td>30.5</td><td>41.3</td></tr><tr><td>Loss on write-down of long-lived asset</td><td>—</td><td>43.5</td><td>7.9</td></tr><tr><td>Unrealized loss (gain) on derivatives</td><td>8.3</td><td>(70.1)</td><td>33.4</td></tr><tr><td>(Gain) loss on disposal of fixed assets</td><td>(25.5)</td><td>27.0</td><td>26.6</td></tr><tr><td>Other</td><td>7.8</td><td>18.2</td><td>12.9</td></tr><tr><td>Changes in assets and liabilities, net of acquisitions:</td><td></td><td></td><td></td></tr><tr><td>Receivables, net</td><td>(91.2)</td><td>3.5</td><td>(60.7)</td></tr><tr><td>Inventories, net</td><td>(155.7)</td><td>263.0</td><td>(53.7)</td></tr><tr><td>Other current assets and noncurrent assets</td><td>(23.7)</td><td>239.8</td><td>(82.6)</td></tr><tr><td>Accounts payable and accrued liabilities</td><td>(65.7)</td><td>(243.9)</td><td>262.0</td></tr><tr><td>Other noncurrent liabilities</td><td>19.4</td><td>45.9</td><td>1.8</td></tr><tr><td>Net cash provided by operating activities</td><td>935.5</td><td>1,260.2</td><td>2,038.3</td></tr><tr><td>Cash Flows from Investing Activities</td><td></td><td></td><td></td></tr><tr><td>Capital expenditures</td><td>(820.1)</td><td>(843.1)</td><td>(1,000.3)</td></tr><tr><td>Purchases of available-for-sale securities - restricted</td><td>(1,676.3)</td><td>(1,659.4)</td><td>—</td></tr><tr><td>Proceeds from sale of available-for-sale securities - restricted</td><td>1,658.1</td><td>1,029.3</td><td>—</td></tr><tr><td>Proceeds from sale of assets</td><td>300.7</td><td>0.9</td><td>5.6</td></tr><tr><td>Proceeds from adjustment to acquisition of business</td><td>—</td><td>—</td><td>47.9</td></tr><tr><td>Investments in nonconsolidated companies</td><td>(62.5)</td><td>(244.0)</td><td>(227.1)</td></tr><tr><td>Investments in consolidated affiliate</td><td>(49.5)</td><td>(169.0)</td><td>—</td></tr><tr><td>Return of investment from nonconsolidated companies</td><td>—</td><td>—</td><td>54.4</td></tr><tr><td>Other</td><td>(18.2)</td><td>19.3</td><td>1.1</td></tr><tr><td>Net cash (used in) investing activities</td><td>(667.8)</td><td>(1,866.0)</td><td>(1,118.4)</td></tr><tr><td>Cash Flows from Financing Activities</td><td></td><td></td><td></td></tr><tr><td>Payments of short-term debt</td><td>(601.4)</td><td>(421.3)</td><td>(367.2)</td></tr><tr><td>Proceeds from issuance of short-term debt</td><td>631.4</td><td>397.0</td><td>379.7</td></tr><tr><td>Payments of structured accounts payable arrangements</td><td>(418.5)</td><td>(792.2)</td><td>(395.7)</td></tr><tr><td>Proceeds from structured accounts payable arrangements</td><td>666.8</td><td>433.6</td><td>635.2</td></tr><tr><td>Payments of long-term debt</td><td>(102.2)</td><td>(769.1)</td><td>(59.6)</td></tr><tr><td>Proceeds from issuance of long-term debt</td><td>1,251.4</td><td>720.0</td><td>4.7</td></tr><tr><td>Payment of financing costs</td><td>(15.4)</td><td>—</td><td>—</td></tr><tr><td>Repurchases of stock</td><td>—</td><td>(75.0)</td><td>(709.5)</td></tr><tr><td>Cash dividends paid</td><td>(210.6)</td><td>(385.1)</td><td>(384.7)</td></tr><tr><td>Other</td><td>(0.7)</td><td>3.5</td><td>3.7</td></tr><tr><td>Net cash provided by (used in) financing activities</td><td>1,200.8</td><td>(888.6)</td><td>(893.4)</td></tr><tr><td>Effect of exchange rate changes on cash</td><td>14.5</td><td>68.8</td><td>(264.1)</td></tr><tr><td>Net change in cash and cash equivalents</td><td>1,483.0</td><td>(1,425.6)</td><td>(237.6)</td></tr><tr><td>Cash and cash equivalents—beginning of period</td><td>711.4</td><td>2,137.0</td><td>2,374.6</td></tr><tr><td>Cash and cash equivalents—end of period</td><td>$ 2,194.4</td><td>$ 711.4</td><td>$ 2,137.0</td></tr></table>

See Accompanying Notes to Consolidated Financial Statements



# THE MOSAIC COMPANY
CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)
(In millions)

<table><tr><td rowspan="2"></td><td colspan="4">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td></td></tr><tr><td>Reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets to the consolidated statements of cash flows:</td><td></td><td></td><td></td><td></td></tr><tr><td>Cash and cash equivalents</td><td>$ 2,153.5</td><td>$ 673.1</td><td>$ 1,276.3</td><td></td></tr><tr><td>Restricted cash in other current assets</td><td>8.3</td><td>7.0</td><td>9.3</td><td></td></tr><tr><td>Restricted cash in other assets</td><td>32.6</td><td>31.3</td><td>851.4</td><td></td></tr><tr><td>Total cash, cash equivalents and restricted cash shown in the statement of cash flows</td><td>$ 2,194.4</td><td>$ 711.4</td><td>$ 2,137.0</td><td></td></tr></table>

See Accompanying Notes to Consolidated Financial Statements



## Consolidated Statements of Equity
In millions, except per share data

<table><tr><td rowspan="2"></td><td rowspan="2">Shares</td><td colspan="6">Dollars</td></tr><tr><td colspan="4">Mosaic Shareholders</td><td rowspan="2">Non-Controlling Interests</td><td rowspan="2">Total Equity</td></tr><tr><td></td><td>Common Stock</td><td>Common Stock</td><td>Capital in Excess of Par Value</td><td>Retained Earnings</td><td>Accumulated Other Comprehensive Loss</td></tr><tr><td>Balance as of December 31, 2014</td><td>367.5</td><td>$ 3.7</td><td>$ 4.2</td><td>$ 11,168.9</td><td>$ (473.7)</td><td>$ 17.5</td><td>$ 10,720.6</td></tr><tr><td>Total comprehensive income (loss)</td><td>—</td><td>—</td><td>—</td><td>1,000.4</td><td>(1,019.2)</td><td>(3.5)</td><td>(22.3)</td></tr><tr><td>Stock option exercises</td><td>0.6</td><td>—</td><td>5.3</td><td>—</td><td>—</td><td>—</td><td>5.3</td></tr><tr><td>Stock based compensation</td><td>—</td><td>—</td><td>27.9</td><td>—</td><td>—</td><td>—</td><td>27.9</td></tr><tr><td>Repurchases of stock</td><td>(15.6)</td><td>(0.2)</td><td>(30.2)</td><td>(667.9)</td><td>—</td><td>—</td><td>(698.3)</td></tr><tr><td>Dividends ($1.075 per share)</td><td>—</td><td>—</td><td>—</td><td>(486.6)</td><td>—</td><td>—</td><td>(486.6)</td></tr><tr><td>Dividends for noncontrolling interests</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td><td>(0.8)</td><td>(0.8)</td></tr><tr><td>Equity from noncontrolling interests</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td><td>20.0</td><td>20.0</td></tr><tr><td>Tax shortfall related to share based compensation</td><td>—</td><td>—</td><td>(0.8)</td><td>—</td><td>—</td><td>—</td><td>(0.8)</td></tr><tr><td>Balance as of December 31, 2015</td><td>352.5</td><td>3.5</td><td>6.4</td><td>11,014.8</td><td>(1,492.9)</td><td>33.2</td><td>9,565.0</td></tr><tr><td>Total comprehensive income (loss)</td><td>—</td><td>—</td><td>—</td><td>297.8</td><td>180.7</td><td>5.5</td><td>484.0</td></tr><tr><td>Stock option exercises</td><td>0.5</td><td>—</td><td>3.8</td><td>—</td><td>—</td><td>—</td><td>3.8</td></tr><tr><td>Stock based compensation</td><td>—</td><td>—</td><td>29.2</td><td>—</td><td>—</td><td>—</td><td>29.2</td></tr><tr><td>Repurchases of stock</td><td>(2.8)</td><td>—</td><td>(9.5)</td><td>(65.5)</td><td>—</td><td>—</td><td>(75.0)</td></tr><tr><td>Dividends ($1.10 per share)</td><td>—</td><td>—</td><td>—</td><td>(383.7)</td><td>—</td><td>—</td><td>(383.7)</td></tr><tr><td>Dividends for noncontrolling interests</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td><td>(0.8)</td><td>(0.8)</td></tr><tr><td>Balance as of December 31, 2016</td><td>350.2</td><td>3.5</td><td>29.9</td><td>10,863.4</td><td>(1,312.2)</td><td>37.9</td><td>9,622.5</td></tr><tr><td>Total comprehensive income (loss)</td><td>—</td><td>—</td><td>—</td><td>(107.2)</td><td>250.6</td><td>2.6</td><td>146.0</td></tr><tr><td>Vesting of restricted stock units</td><td>0.8</td><td>—</td><td>(12.8)</td><td>—</td><td>—</td><td>—</td><td>(12.8)</td></tr><tr><td>Stock based compensation</td><td>—</td><td>—</td><td>27.4</td><td>—</td><td>—</td><td>—</td><td>27.4</td></tr><tr><td>Dividends ($0.35 per share)</td><td>—</td><td>—</td><td>—</td><td>(125.1)</td><td>—</td><td>—</td><td>(125.1)</td></tr><tr><td>Dividends for noncontrolling interests</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td><td>(0.7)</td><td>(0.7)</td></tr><tr><td>Distribution to noncontrolling interests</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td><td>(18.2)</td><td>(18.2)</td></tr><tr><td>Balance as of December 31, 2017</td><td>351.0</td><td>$ 3.5</td><td>$ 44.5</td><td>$ 10,631.1</td><td>$ (1,061.6)</td><td>$ 21.6</td><td>$ 9,639.1</td></tr></table>

See Accompanying Notes to Consolidated Financial Statements



# Notes to Consolidated Financial Statements
Tables in millions, except per share amounts

## 1. ORGANIZATION AND NATURE OF BUSINESS

The Mosaic Company (before or after the Cargill Transaction described in Note 18, “Mosaic”, and with its consolidated subsidiaries, “we”, “us”, “our”, or the “Company”) is the parent company of the business that was formed through the business combination (“Combination”) of IMC Global Inc. and the Cargill Crop Nutrition fertilizer businesses of Cargill, Incorporated and its subsidiaries (collectively, “Cargill”) on October 22, 2004.

We produce and market concentrated phosphate and potash crop nutrients. We conduct our business through wholly and majority owned subsidiaries as well as businesses in which we own less than a majority or a non-controlling interest, including consolidated variable interest entities and investments accounted for by the equity method.

Our Phosphates business segment owns and operates mines and production facilities in Florida which produce concentrated phosphate crop nutrients and phosphate-based animal feed ingredients, and processing plants in Louisiana which produce concentrated phosphate crop nutrients. Included in the Phosphates segment is our 35% economic interest in a joint venture that owns the Miski Mayo Phosphate Mine in Peru and our 25% interest in the Ma’aden Wa’ad Al Shamal Phosphate Company (the “MWSPC”), a joint venture we formed with Saudi Arabian Mining Company (“Ma’aden”) and Saudi Basic Industries Corporation (“SABIC”) to develop, own and operate integrated phosphate production facilities in the Kingdom of Saudi Arabia. Once operational, we will market approximately 25% of the MWSPC production.

Our Potash business segment owns and operates potash mines and production facilities in Canada and the U.S. which produce potash-based crop nutrients, animal feed ingredients and industrial products. Potash sales include domestic and international sales. We are a member of Canpotex, Limited (“Canpotex”), an export association of Canadian potash producers through which we sell our Canadian potash outside the U.S. and Canada.

Our International Distribution business segment consists of sales offices, crop nutrient blending and bagging facilities, port terminals and warehouses in several key non-U.S. countries, including Brazil, Paraguay, India and China. We also have a single superphosphate plant in Brazil that produces crop nutrients by mixing sulfuric acid with phosphate rock. On December 17, 2014, we completed the acquisition of Archer Daniels Midland Company’s (“ADM”) fertilizer distribution business in Brazil and Paraguay for $301.7 million, including $47.9 million related to a reduction of the working capital acquired, which is reflected in our Consolidated Financial Statements in 2015. Our International Distribution segment serves as a distribution outlet for our Phosphates and Potash segments, but also purchases and markets products from other suppliers, generally to complement the sales of our production.

Intersegment eliminations, mark-to-market gains/losses on derivatives, debt expenses, Streamsong Resort \( ^{®} \)  results of operations and our legacy Argentina and Chile results are included within Corporate, Eliminations and Other.

## 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

## Statement Presentation and Basis of Consolidation

The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Throughout the Notes to Consolidated Financial Statements, amounts in tables are in millions of dollars except for per share data and as otherwise designated.

The accompanying Consolidated Financial Statements include the accounts of Mosaic and its majority owned subsidiaries. Certain investments in companies where we do not have control but have the ability to exercise significant influence are accounted for by the equity method.

## Accounting Estimates

Preparation of the Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of net sales and expenses during the reporting periods. The most significant estimates made by management relate to the estimates of fair value of acquired assets and liabilities, the recoverability of non-current assets including goodwill, the useful lives and net realizable values of long-lived assets, environmental and reclamation liabilities including asset retirement obligations (“ARO”), the costs of our employee benefit obligations for pension plans and



postretirement benefits, income tax-related accounts, including the valuation allowance against deferred income tax assets, inventory valuation and accruals for pending legal and environmental matters. Actual results could differ from these estimates.

## Revenue Recognition

Revenue on North American sales is recognized when the product is delivered to the customer and/or when the risks and rewards of ownership are otherwise transferred to the customer and when the price is fixed or determinable. Revenue on North American export sales is recognized upon the transfer of title to the customer and when the other revenue recognition criteria have been met, which generally occurs when product enters international waters. Revenue from sales originating outside of North America is recognized upon transfer of title to the customer based on contractual terms of each arrangement and when the other revenue recognition criteria have been met. Our products are generally sold based on the market prices prevailing at the time the sales contract is signed or through contracts which are priced at the time of shipment based on a formula. In certain circumstances, the final price of our products is determined after shipment based on the current market at the time the price is agreed to with the customer. In such circumstances, revenue is recognized when the final price is fixed and the other revenue recognition criteria have been met. Shipping and handling costs are included as a component of cost of goods sold.

## Non-Income Taxes

We pay Canadian resource taxes consisting of the Potash Production Tax and resource surcharge. The Potash Production Tax is a Saskatchewan provincial tax on potash production and consists of a base payment and a profits tax. In addition to the Canadian resource taxes, royalties are payable to the mineral owners with respect to potash reserves or production of potash. These resource taxes and royalties are recorded in our cost of goods sold. Our Canadian resource tax and royalty expenses were $142.0 million, $121.6 million and $281.2 million during 2017, 2016 and 2015, respectively.

We have approximately $127 million of assets recorded as of December 31, 2017, related to PIS and Cofins, which is a Brazilian federal value-added tax, and income tax credits mostly earned in 2009 through 2017 that we believe will be realized through paying income taxes, paying other federal taxes, or receiving cash refunds. Should the Brazilian government determine that these are not valid credits upon audit, this could impact our results in such period. We have recorded the PIS and Cofins credits at amounts which are probable of collection. Information regarding PIS and Cofins taxes already audited is included in Note 21 of our Notes to Consolidated Financial Statements.

## Foreign Currency Translation

The Company’s reporting currency is the U.S. dollar; however, for operations located in Canada and Brazil, the functional currency is the local currency. Assets and liabilities of these foreign operations are translated to U.S. dollars at exchange rates in effect at the balance sheet date, while income statement accounts and cash flows are translated to U.S. dollars at the average exchange rates for the period. For these operations, translation gains and losses are recorded as a component of accumulated other comprehensive income in equity until the foreign entity is sold or liquidated. Transaction gains and losses result from transactions that are denominated in a currency other than the functional currency of the operation, primarily accounts receivable in our Canadian entities denominated in U.S. dollars, and accounts payable in Brazil denominated in U.S. dollars. These foreign currency transaction gains and losses are presented separately in the Consolidated Statement of Earnings.

## Cash and Cash Equivalents

Cash and cash equivalents include short-term, highly liquid investments with original maturities of 90 days or less, and other highly liquid investments that are payable on demand such as money market accounts, certain certificates of deposit and repurchase agreements. The carrying amount of such cash equivalents approximates their fair value due to the short-term and highly liquid nature of these instruments.

## Concentration of Credit Risk

In the U.S., we sell our products to manufacturers, distributors and retailers primarily in the Midwest and Southeast. Internationally, our potash products are sold primarily through Canpotex, an export association. A concentration of credit risk arises from our sales and accounts receivable associated with the international sales of potash product through Canpotex. We consider our concentration risk related to the Canpotex receivable to be mitigated by their credit policy which requires the underlying receivables to be substantially insured or secured by letters of credit. As of December 31, 2017 and 2016, $37.8



million and $68.1 million, respectively, of accounts receivable were due from Canpotex. During 2017, 2016, and 2015, sales to Canpotex were $700.6 million, $604.5 million and $1.1 billion, respectively.

## Inventories

Inventories of raw materials, work-in-process products, finished goods and operating materials and supplies are stated at the lower of cost or net realizable value. Costs for substantially all inventories are determined using the weighted average cost basis. To determine the cost of inventory, we allocate fixed expense to the costs of production based on the normal capacity, which refers to a range of production levels and is considered the production expected to be achieved over a number of periods or seasons under normal circumstances, taking into account the loss of capacity resulting from planned maintenance. Fixed overhead costs allocated to each unit of production should not increase due to abnormally low production. Those excess costs are recognized as a current period expense. When a production facility is completely shut down temporarily, it is considered “idle”, and all related expenses are charged to cost of goods sold.

Net realizable value of our inventory is defined as forecasted selling prices less reasonably predictable selling costs. Significant management judgment is involved in estimating forecasted selling prices including various demand and supply variables. Examples of demand variables include grain and oilseed prices, stock-to-use ratios and changes in inventories in the crop nutrients distribution channels. Examples of supply variables include forecasted prices of raw materials, such as phosphate rock, sulfur, ammonia, and natural gas, estimated operating rates and industry crop nutrient inventory levels. Results could differ materially if actual selling prices differ materially from forecasted selling prices. Charges for lower of cost or market are recognized in our Consolidated Statements of Earnings in the period when there is evidence of a decline of market value below cost.

## Property, Plant and Equipment and Recoverability of Long-Lived Assets

Property, plant and equipment are stated at cost. Costs of significant assets include capitalized interest incurred during the construction and development period. Repairs and maintenance, including planned major maintenance and plant turnaround costs, are expensed when incurred.

Depletion expenses for mining operations, including mineral reserves, are generally determined using the units-of-production method based on estimates of recoverable reserves. Depreciation is computed principally using the straight-line method and units-of-production method over the following useful lives: machinery and equipment three to 25 years, and buildings and leasehold improvements three to 40 years.

We estimate initial useful lives based on experience and current technology. These estimates may be extended through sustaining capital programs. Factors affecting the fair value of our assets or periods of expected use may also affect the estimated useful lives of our assets and these factors can change. Therefore, we periodically review the estimated remaining lives of our facilities and other significant assets and adjust our depreciation rates prospectively where appropriate.

We have worked extensively to ensure the mechanical integrity of our fixed assets in order to help prolong their useful lives, while helping to improve asset utilization and potential cash preservation. As a result, we completed an in-depth review of our fixed assets and concluded that for certain assets, we would make a change to the units-of-production depreciation method from the straight-line method to better reflect the pattern of consumption of those assets. We also determined the expected lives of certain mining and production equipment and reserves were longer than the previously estimated useful lives used to determine depreciation in our financial statements. As a result, effective January 1, 2017, we changed our estimates of the useful lives and method of determining the depreciation of certain equipment to better reflect the estimated periods during which these assets will remain in service. The effect of this change in estimates reduced depreciation expense, thus increasing operating earnings, by approximately $65 million in 2017. Amounts may vary throughout the year due to changes in production levels. As a result of this change and actions taken to prolong asset lives, we expect our maintenance expense to increase in the future.

Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. An impairment assessment involves management judgment and estimates of factors such as industry and market conditions, the economic life of the asset, sales volume and prices, inflation, raw materials costs, cost of capital, tax rates and capital spending. The carrying amount of a long-lived asset group is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset group. If it is determined that an impairment loss has occurred, the loss is measured as the amount by which the carrying amount of the long-lived asset group exceeds its fair value.



## Leases

Leases in which the risk of ownership is retained by the lessor are classified as operating leases. Leases which substantially transfer all of the benefits and risks inherent in ownership to the lessee are classified as capital leases. Assets acquired under capital leases are depreciated on the same basis as property, plant and equipment. Rental payments are expensed on a straight-line basis. Leasehold improvements are depreciated over the depreciable lives of the corresponding fixed assets or the related lease term, whichever is shorter.

## Structured Accounts Payable Arrangements

In Brazil, we finance some of our potash-based fertilizer and other raw material product purchases through third-party financing arrangements. These arrangements provide that the third-party intermediary advance the amount of the scheduled payment to the vendor, less an appropriate discount, at a scheduled payment date and Mosaic makes payment to the third-party intermediary at a later date, stipulated in accordance with the commercial terms negotiated. At December 31, 2017 and 2016, these structured accounts payable arrangements were $386.2 million and $128.8 million, respectively.

## Contingencies

Accruals for environmental remediation efforts are recorded when costs are probable and can be reasonably estimated. In determining these accruals, we use the most current information available, including similar past experiences, available technology, consultant evaluations, regulations in effect, the timing of remediation and cost-sharing arrangements. Adjustments to accruals, recorded as needed in our Consolidated Statement of Earnings each quarter, are made to reflect changes in and current status of these factors.

We are involved from time to time in claims and legal actions incidental to our operations, both as plaintiff and defendant. We have established what we currently believe to be adequate accruals for pending legal matters. These accruals are established as part of an ongoing worldwide assessment of claims and legal actions that takes into consideration such items as advice of legal counsel, individual developments in court proceedings, changes in the law, changes in business focus, changes in the litigation environment, changes in opponent strategy and tactics, new developments as a result of ongoing discovery, and past experience in defending and settling similar claims. The litigation accruals at any time reflect updated assessments of the then-existing claims and legal actions. The final outcome or potential settlement of litigation matters could differ materially from the accruals which we have established. Legal costs are expensed as incurred.

## Pension and Other Postretirement Benefits

Mosaic offers a number of benefit plans that provide pension and other benefits to qualified employees. These plans include defined benefit pension plans, supplemental pension plans, defined contribution plans and other postretirement benefit plans.

We accrue the funded status of our plans, which is representative of our obligations under employee benefit plans and the related costs, net of plan assets measured at fair value. The cost of pensions and other retirement benefits earned by employees is generally determined with the assistance of an actuary using the projected benefit method prorated on service and management’s best estimate of expected plan investment performance, salary escalation, retirement ages of employees and expected healthcare costs.

## Additional Accounting Policies

To facilitate a better understanding of our consolidated financial statements we have disclosed the following significant accounting policies (with the exception of those identified above) throughout the following notes, with the related financial disclosures by major caption:



<table><tr><td>Note</td><td>Topic</td><td>Page</td></tr><tr><td>6</td><td>Earnings per Share</td><td>53</td></tr><tr><td>8</td><td>Investments in Non-Consolidated Companies</td><td>54</td></tr><tr><td>9</td><td>Goodwill</td><td>55</td></tr><tr><td>11</td><td>Marketable Securities Held in Trusts</td><td>59</td></tr><tr><td>12</td><td>Income Taxes</td><td>61</td></tr><tr><td>13</td><td>Accounting for Asset Retirement Obligations</td><td>66</td></tr><tr><td>14</td><td>Accounting for Derivative and Hedging Activities</td><td>68</td></tr><tr><td>15</td><td>Fair Value Measurements</td><td>69</td></tr><tr><td>19</td><td>Share Based Payments</td><td>77</td></tr></table>

## 3. RECENTLY ISSUED ACCOUNTING GUIDANCE

## Recently Adopted Accounting Pronouncements

In November 2016, the Financial Accounting Standards Board (“FASB”) issued guidance which requires that a statement of cash flows explain the change during the related period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for us beginning January 1, 2018, and early adoption is permitted. We adopted this standard in the first quarter of 2017 and applied the new guidance on a retrospective basis to all periods presented. Accordingly, on the Consolidated Statements of Cash Flows we reclassified $40.9 million, $38.3 million and $860.7 million from investing activities to the beginning-of-period cash and cash equivalents balance for the December 31, 2017, 2016 and 2015 periods, respectively.

## Pronouncements Issued But Not Yet Adopted

In May 2014, the FASB issued guidance addressing how revenue is recognized from contracts with customers and related disclosures. This standard supersedes existing revenue recognition requirements and most industry-specific guidance. We adopted this new standard on January 1, 2018 and utilized the modified retrospective adoption method by which the cumulative effect of the change is recognized in retained earnings at the date of initial application.

We have reviewed our sales contracts and practices as compared to the new guidance and are substantially complete with our implementation of the accounting and disclosure requirements of the new standard. To prepare for implementation of the new standard, we modified arrangements and systems to ensure that revenue will be recognized at the time control of product transfers to the customer and all other revenue recognition criteria are met. These modifications do not represent significant changes to our business practices.

The new standard will have no cash impact and will not affect the economics of our underlying customer contracts. Based on the evaluation of our current contracts, most revenue will be recorded consistently under both the current and new revenue standards. However, the new revenue standard will accelerate the timing of revenue recognition for certain North American sales arrangements as it requires emphasis on transfer of control rather than risks and rewards. For example, under current revenue practices, we typically wait for risk of loss to be assumed by the customer before recognizing revenue, which generally occurs later than when control is transferred. The cumulative impact of our accelerated revenue recognition under the new revenue standard is expected to result in a net increase of $4.7 million to opening retained earnings as of January 1, 2018. We continue to analyze the impact of the new standard on the revenue accounting for our acquisition of Vale Fertilizantes, S.A.

We are revising our revenue recognition accounting policy and drafting new revenue disclosures to reflect the requirements of the new standard. We continue to assess all potential impacts of the guidance and given normal ongoing business dynamics, preliminary conclusions are subject to change.

In January 2016, the FASB issued guidance which addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This guidance is effective for us beginning January 1, 2018, and early adoption is not permitted. We are currently evaluating this guidance, but do not expect it will have a material effect on our consolidated financial statements.



In February 2016, the FASB issued guidance which requires recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. This guidance is effective for us beginning January 1, 2019, with early adoption permitted. The provisions of this guidance are to be applied using a modified retrospective approach, which requires application of the guidance for all periods presented. The FASB is currently considering relief from comparative period presentation. We have determined that we will not early adopt this standard, and that we will utilize initial calculational guidance for existing leases provided in the standard for use in the modified retrospective approach. We are currently gathering information about our lease arrangements, and are evaluating provisions of our leases against the recognition requirements of the new standard. Additionally, we have begun the process of implementing an information system solution and changes to internal procedures necessary to meet the requirements of the new standards. We continue to evaluate potential technology and process solutions and continue to work to determine the impact this guidance will have on our consolidated financial statements.

## 4. OTHER FINANCIAL STATEMENT DATA

The following provides additional information concerning selected balance sheet accounts:

<table><tr><td rowspan="2"></td><td colspan="3">December 31,</td></tr><tr><td>2017</td><td>2016</td><td></td></tr><tr><td>Receivables</td><td></td><td></td><td></td></tr><tr><td>Trade</td><td>$ 563.6</td><td>$ 550.8</td><td></td></tr><tr><td>Non-trade</td><td>81.3</td><td>79.7</td><td></td></tr><tr><td></td><td>644.9</td><td>630.5</td><td></td></tr><tr><td>Less allowance for doubtful accounts</td><td>2.3</td><td>2.7</td><td></td></tr><tr><td></td><td>$ 642.6</td><td>$ 627.8</td><td></td></tr><tr><td>Inventories</td><td></td><td></td><td></td></tr><tr><td>Raw materials</td><td>$ 37.8</td><td>$ 42.9</td><td></td></tr><tr><td>Work in process</td><td>349.9</td><td>332.9</td><td></td></tr><tr><td>Finished goods</td><td>1,035.1</td><td>936.7</td><td></td></tr><tr><td>Final price deferred (a)</td><td>38.6</td><td>—</td><td></td></tr><tr><td>Operating materials and supplies</td><td>85.8</td><td>78.6</td><td></td></tr><tr><td></td><td>$ 1,547.2</td><td>$ 1,391.1</td><td></td></tr><tr><td>Other current assets</td><td></td><td></td><td></td></tr><tr><td>Final price deferred (a)</td><td>$ —</td><td>$ 31.6</td><td></td></tr><tr><td>Income and other taxes receivable</td><td>141.3</td><td>146.3</td><td></td></tr><tr><td>Prepaid expenses</td><td>69.0</td><td>99.9</td><td></td></tr><tr><td>Other</td><td>62.9</td><td>87.9</td><td></td></tr><tr><td></td><td>$ 273.2</td><td>$ 365.7</td><td></td></tr><tr><td>Other assets</td><td></td><td></td><td></td></tr><tr><td>Restricted cash</td><td>$ 32.6</td><td>$ 31.3</td><td></td></tr><tr><td>MRO inventory</td><td>114.8</td><td>115.6</td><td></td></tr><tr><td>Marketable securities held in trust - restricted</td><td>628.0</td><td>611.0</td><td></td></tr><tr><td>Other</td><td>492.1</td><td>296.2</td><td></td></tr><tr><td></td><td>$ 1,267.5</td><td>$ 1,054.1</td><td></td></tr></table>



<table><tr><td rowspan="2"></td><td colspan="2">December 31,</td></tr><tr><td>2017</td><td>2016</td></tr><tr><td>Accrued liabilities</td><td></td><td></td></tr><tr><td>Accrued dividends</td><td>$ 12.1</td><td>$ 101.8</td></tr><tr><td>Payroll and employee benefits</td><td>159.5</td><td>142.9</td></tr><tr><td>Asset retirement obligations</td><td>98.1</td><td>102.0</td></tr><tr><td>Customer prepayments</td><td>140.4</td><td>145.6</td></tr><tr><td>Other</td><td>344.3</td><td>345.0</td></tr><tr><td></td><td>$ 754.4</td><td>$ 837.3</td></tr><tr><td>Other noncurrent liabilities</td><td></td><td></td></tr><tr><td>Asset retirement obligations</td><td>$ 761.2</td><td>$ 747.9</td></tr><tr><td>Accrued pension and postretirement benefits</td><td>53.7</td><td>64.9</td></tr><tr><td>Unrecognized tax benefits</td><td>33.5</td><td>27.2</td></tr><tr><td>Other</td><td>119.4</td><td>112.9</td></tr><tr><td></td><td>$ 967.8</td><td>$ 952.9</td></tr></table>

(a) Final price deferred is product that has shipped to customers, but the price has not yet been agreed upon. For arrangements entered into prior to January 1, 2017, this was not included in inventory as risk of loss had passed to our customers. Amounts in this account are based on inventory cost. Beginning in 2017, the provisions of these arrangements changed so that risk of loss does not pass to the customer until the time control transfers and the amounts are retained in inventory.

Interest expense, net was comprised of the following in 2017, 2016 and 2015:

<table><tr><td rowspan="2"></td><td colspan="3">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Interest income</td><td>$ 33.2</td><td>$ 28.2</td><td>$ 35.8</td></tr><tr><td>Less interest expense</td><td>171.3</td><td>140.6</td><td>133.6</td></tr><tr><td>Interest expense, net</td><td>$ (138.1)</td><td>$ (112.4)</td><td>$ (97.8)</td></tr></table>

## 5. PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consist of the following:

<table><tr><td rowspan="2"></td><td colspan="3">December 31,</td></tr><tr><td>2017</td><td>2016</td><td></td></tr><tr><td>Land</td><td>$ 245.9</td><td>$ 237.3</td><td></td></tr><tr><td>Mineral properties and rights</td><td>3,540.4</td><td>3,413.2</td><td></td></tr><tr><td>Buildings and leasehold improvements</td><td>2,473.0</td><td>2,302.8</td><td></td></tr><tr><td>Machinery and equipment \( ^{(a)} \)</td><td>7,933.5</td><td>7,226.3</td><td></td></tr><tr><td>Construction in-progress</td><td>1,793.0</td><td>1,737.6</td><td></td></tr><tr><td></td><td>15,985.8</td><td>14,917.2</td><td></td></tr><tr><td>Less: accumulated depreciation and depletion</td><td>6,274.1</td><td>5,718.7</td><td></td></tr><tr><td></td><td>$ 9,711.7</td><td>$ 9,198.5</td><td></td></tr></table>

(a) Includes assets under capital leases of approximately $345 million and $72 million as of December 31, 2017 and 2016, respectively.



Depreciation and depletion expense was $659.4 million, $703.8 million and $732.2 million for 2017, 2016 and 2015, respectively. Capitalized interest on major construction projects was $23.9 million, $38.5 million and $36.1 million for 2017, 2016 and 2015.

## 6. EARNINGS PER SHARE

The numerator for basic and diluted earnings per share (“EPS”) is net earnings attributable to Mosaic. The denominator for basic EPS is the weighted average number of shares outstanding during the period. The denominator for diluted EPS also includes the weighted average number of additional common shares that would have been outstanding if the dilutive potential common shares had been issued, unless the shares are anti-dilutive.

The following is a reconciliation of the numerator and denominator for the basic and diluted EPS computations:

<table><tr><td rowspan="2">(in millions)</td><td colspan="4">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td></td></tr><tr><td>Net earnings attributable to Mosaic</td><td>$ (107.2)</td><td>$ 297.8</td><td>$ 1,000.4</td><td></td></tr><tr><td>Basic weighted average number of shares outstanding attributable to common stockholders</td><td>350.9</td><td>350.4</td><td>358.5</td><td></td></tr><tr><td>Dilutive impact of share-based awards</td><td>—</td><td>1.3</td><td>1.8</td><td></td></tr><tr><td>Diluted weighted average number of shares outstanding</td><td>350.9</td><td>351.7</td><td>360.3</td><td></td></tr><tr><td>Basic net earnings per share</td><td>$ (0.31)</td><td>$ 0.85</td><td>$ 2.79</td><td></td></tr><tr><td>Diluted net earnings per share</td><td>$ (0.31)</td><td>$ 0.85</td><td>$ 2.78</td><td></td></tr></table>

A total of 3.5 million shares for 2017, 3.0 million shares for 2016, and 2.2 million shares for 2015 of common stock subject to issuance upon exercise of stock awards have been excluded from the calculation of diluted EPS because the effect would be anti-dilutive.

## 7. CASH FLOW INFORMATION

Supplemental disclosures of cash paid for interest and income taxes and non-cash investing and financing information is as follows:

<table><tr><td rowspan="2">(in millions)</td><td colspan="4">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td></td></tr><tr><td>Cash paid (received) during the period for:</td><td></td><td></td><td></td><td></td></tr><tr><td>Interest</td><td>$     178.9</td><td>$     163.0</td><td>$     162.3</td><td></td></tr><tr><td>Less amount capitalized</td><td>23.9</td><td>38.5</td><td>36.1</td><td></td></tr><tr><td>Cash interest, net</td><td>$     155.0</td><td>$     124.5</td><td>$     126.2</td><td></td></tr><tr><td>Income taxes</td><td>$      (70.1)</td><td>$      (65.4)</td><td>$     193.3</td><td></td></tr></table>

Acquiring or constructing property, plant and equipment by incurring a liability does not result in a cash outflow for us until the liability is paid. In the period the liability is incurred, the change in operating accounts payable on the Consolidated Statements of Cash Flows is adjusted by such amount. In the period the liability is paid, the amount is reflected as a cash outflow from investing activities. The applicable net change in operating accounts payable that was classified to investing activities on the Consolidated Statements of Cash Flows was $11.1 million, $43.7 million and $(21.9) million for 2017, 2016, and 2015 respectively.

We accrued $12.1 million related to the dividends declared in 2017 that will be paid in 2018. At December 31, 2016, we had accrued dividends of $96.3 million which were paid in 2017.

On October 24, 2017, a lease financing transaction was completed with respect to an articulated tug and barge unit that is being used to transport ammonia for our operations. As described in more detail in Note 22, we had provided bridge loans to



a consolidated affiliate for construction of the unit, and that entity also received construction loans from a joint venture in which we hold a 50% interest. Following the application of proceeds from the transaction, all outstanding construction loans to the joint venture entity, together with accrued interest, were repaid. See Note 22 for additional details.

We had non cash investing and financing transactions related to assets acquired under capital leases in 2017 of $267.9 million.

Depreciation, depletion and amortization includes $659.4 million, $703.8 million, and $732.2 million related to depreciation and depletion of property, plant and equipment, and $6.1 million, $7.4 million, and $7.6 million related to amortization of intangible assets for 2017, 2016, and 2015, respectively.

## 8. INVESTMENTS IN NON-CONSOLIDATED COMPANIES

We have investments in various international and domestic entities and ventures. The equity method of accounting is applied to such investments when the ownership structure prevents us from exercising a controlling influence over operating and financial policies of the businesses but still allows us to have significant influence. Under this method, our equity in the net earnings or losses of the investments is reflected as equity in net earnings of non-consolidated companies on our Consolidated Statements of Earnings. The effects of material intercompany transactions with these equity method investments are eliminated, including the gross profit on sales to and purchases from our equity-method investments which is deferred until the time of sale to the final third party customer. The cash flow presentation of dividends received from equity method investees is determined by evaluation of the facts, circumstances and nature of the distribution.

A summary of our equity-method investments, which were in operation as of December 31, 2017, is as follows:

<table><tr><td>Entity</td><td>Economic Interest</td></tr><tr><td>Gulf Sulphur Services LTD., LLLP</td><td>50.0%</td></tr><tr><td>River Bend Ag, LLC</td><td>50.0%</td></tr><tr><td>IFC S.A.</td><td>45.0%</td></tr><tr><td>Mski Mayo Mine</td><td>35.0%</td></tr><tr><td>MWSPC</td><td>25.0%</td></tr><tr><td>Canpotex</td><td>36.2%</td></tr></table>

The summarized financial information shown below includes all non-consolidated companies carried on the equity method.

<table><tr><td rowspan="2">(in millions)</td><td colspan="3">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Net sales</td><td>$ 2,871.2</td><td>$ 2,307.9</td><td>$ 3,787.4</td></tr><tr><td>Net earnings</td><td>95.3</td><td>11.9</td><td>30.2</td></tr><tr><td>Mosaic’s share of equity in net earnings (loss)</td><td>16.7</td><td>(15.4)</td><td>(2.4)</td></tr><tr><td>Total assets</td><td>8,623.6</td><td>8,665.4</td><td>6,745.4</td></tr><tr><td>Total liabilities</td><td>5,971.9</td><td>6,310.1</td><td>4,698.6</td></tr><tr><td>Mosaic’s share of equity in net assets</td><td>712.8</td><td>651.5</td><td>589.3</td></tr></table>

The difference between our share of equity in net assets as shown in the above table and the investment in non-consolidated companies as shown on the Consolidated Balance Sheets is due to an excess amount paid over the book value of the Miski Mayo Mine. The excess relates to phosphate rock reserves adjusted to fair value in relation to the Miski Mayo Mine. The excess amount is amortized over the estimated life of the phosphate rock reserves and is net of related deferred income taxes. There is also a difference related to the July 1, 2016, equity contribution of $120 million we made to MWSPC representing the remaining liability for our portion of mineral rights value transferred to MWSPC from Ma’aden. As of December 31, 2017, MWSPC represented 84% of the total assets and 84% of the total liabilities in the table above. MWSPC commenced ammonia operations in late 2016 and pre-commissioning production of finished phosphate products began in 2017. In 2017 our share of equity in the net earnings was $32 million. Their earnings for the periods ended December 31, 2016 and 2015 were immaterial.



MWSPC is developing a mine and two chemical complexes that are presently expected to produce phosphate fertilizers and other downstream phosphates products in the Kingdom of Saudi Arabia. We currently estimate that the cost to develop and construct the integrated phosphate production facilities (the “Project”) will approximate $8.0 billion, which we expect to be funded primarily through investments by us, Ma’aden and SABIC (together, the “Project Investors”), and through borrowing arrangements and other external project financing facilities (“Funding Facilities”). The production facilities are expected to have a capacity of approximately 3.5 million tonnes of finished product per year. Ammonia operations commenced in late 2016 and pre-commissioning production of finished phosphate products began in 2017. We will market approximately 25% of the production of the joint venture.

On June 30, 2014, MWSPC entered into Funding Facilities with a consortium of 20 financial institutions for a total amount of approximately $5.0 billion.

Also on June 30, 2014, in support of the Funding Facilities, we, together with Ma’aden and SABIC, agreed to provide our respective proportionate shares of the funding necessary for MWSPC by:

(a) Contributing equity or making shareholder subordinated loans of up to $2.4 billion to fund project costs to complete and commission the Project (the “Equity Commitments”).

(b) Through the earlier of Project completion or June 30, 2020, contributing equity, making shareholder subordinated loans or providing bank subordinated loans, to fund cost overruns on the Project (the “Additional Cost Overrun Commitment”).

(c) Through the earlier of Project completion or June 30, 2020, contributing equity, making shareholder loans or providing bank subordinated loans to fund scheduled debt service (excluding accelerated amounts) payable under the Funding Facilities and certain other amounts (such commitment, the “DSU Commitment” and such scheduled debt service and other amounts, “Scheduled Debt Service”). Our proportionate share of amounts covered by the DSU Commitment is not anticipated to exceed approximately $200 million. The fair value of the DSU Commitment at December 31, 2017 is not material.

(d) From the earlier of the Project completion date or June 30, 2020, to the extent there is a shortfall in the amounts available to pay Scheduled Debt Service, depositing for the payment of Scheduled Debt Service an amount up to the respective amount of certain shareholder tax amounts, and severance fees under MWSPC’s mining license, paid within the prior 36 months by MWSPC on behalf of the Project Investors, if any.

In January 2016, MWSPC received approval from the Saudi Industrial Development Fund (“SIDF”) for loans in the total amount of approximately $1.1 billion for the Project, subject to the finalization of definitive agreements. In 2017, MWSPC entered into definitive agreements with SIDF to draw up to $560 million from the total SIDF-approved amount (the “SIDF Loans”). We anticipate that, in connection with the SIDF Loan facility, we and MWSPC will undertake obligations in addition to the current Equity Commitments, the Additional Cost Overrun Commitment and the DSU Commitment, including a guarantee by us in the amount of our proportionate share of the SIDF Loans (expected to be approximately $140 million).

We currently estimate that our cash investment in the Project, including our share of the Equity Commitments, our payments for mineral rights, and the amount we have invested to date, will approximate $840 million. As of December 31, 2017, our investment was $770 million. We expect our future cash contributions to be approximately $70 million.

## 9. GOODWILL

Goodwill is carried at cost, not amortized, and represents the excess of the purchase price and related costs over the fair value assigned to the net identifiable assets of a business acquired. We have three reporting units, and each is assigned a portion of goodwill: Phosphates, Potash, and International Distribution. We test goodwill for impairment on a quantitative basis at the reporting unit level on an annual basis or upon the occurrence of events that may indicate possible impairment. The test resulted in no impairment in the periods presented.



The changes in the carrying amount of goodwill, by reporting unit, as of December 31, 2017 and 2016, are as follows:

<table><tr><td>(in millions)</td><td>Phosphates</td><td>Potash</td><td>International Distribution</td><td>Total</td></tr><tr><td>Balance as of December 31, 2015</td><td>$ 492.4</td><td>$ 984.7</td><td>$ 118.2</td><td>$ 1,595.3</td></tr><tr><td>Foreign currency translation</td><td>—</td><td>28.9</td><td>6.7</td><td>35.6</td></tr><tr><td>Balance as of December 31, 2016</td><td>492.4</td><td>1,013.6</td><td>124.9</td><td>1,630.9</td></tr><tr><td>Foreign currency translation</td><td>—</td><td>63.3</td><td>(0.6)</td><td>62.7</td></tr><tr><td>Balance as of December 31, 2017</td><td>$ 492.4</td><td>$ 1,076.9</td><td>$ 124.3</td><td>$ 1,693.6</td></tr></table>

We elected early adoption of ASU 2017-04 effective January 1, 2017, “Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” As a result, we removed Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. Goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill.

As of October 31, 2017, we performed our annual quantitative assessment. In performing our assessment, we estimated the fair value of each of our reporting units using the income approach, also known as the discounted cash flow (“DCF”) method. The income approach utilized the present value of cash flows to estimate fair value. The future cash flows for our reporting units were projected based on our estimates, at that time, for revenue, operating income and other factors (such as working capital and capital expenditures for each reporting unit). To determine if the fair value of each of our reporting units with goodwill exceeded its carrying value, we assumed sales volume growth rates based on our long-term expectations, our internal selling prices and raw material prices for years one through five, which were anchored in projections from CRU International Limited, an independent third party data source. Selling prices and raw material prices for years six and beyond were based on anticipated market growth. The discount rates used in our DCF method were based on a weighted-average cost of capital (“WACC”), determined from relevant market comparisons. A terminal value growth rate of 2% to 2.25% was applied to the final year of the projected period and reflected our estimate of stable growth. We then calculated a present value of the respective cash flows for each reporting unit to arrive at an estimate of fair value under the income approach. Finally, we compared our estimates of fair values for the three reporting units, to our October 31, 2017, total public market capitalization, based on our common stock price at that date.

In making this assessment, we considered, among other things, expectations of projected net sales and cash flows, assumptions impacting the WACC, changes in our stock price and changes in the carrying values of our reporting units with goodwill. We also considered overall business conditions including, among other things, a perception of oversupply in both Phosphates and Potash. Based on our 2017 annual impairment test, no reporting units were considered at risk of impairment.

Based on our quantitative evaluation at October 31, 2017, we determined that our Phosphates and Potash reporting units had estimated fair values in excess of their carrying values. As a result, we concluded that the goodwill assigned to the Phosphates and Potash reporting units was not impaired, but could be at risk of future impairment. We continue to believe that our long-term financial goals will be achieved. As a result of our analysis, we did not take a goodwill impairment charge.

The International Distribution reporting unit was evaluated and not considered at risk of goodwill impairment as of October 31, 2017.

Assessing the potential impairment of goodwill involves certain assumptions and estimates in our model that are highly sensitive and include inherent uncertainties that are often interdependent and do not change in isolation such as product prices, raw material costs, WACC, and terminal value growth rate. If any of these are different from our assumptions, future tests may indicate an impairment of goodwill, which would result in non-cash charges, adversely affecting our results of operations.

Of the factors discussed above, WACC is more sensitive than others. Assuming that all other components of our fair value estimate remain unchanged, a change in the WACC would have the following effect on estimated fair values in excess of carrying values:

<table><tr><td rowspan="2"></td><td colspan="5">Sensitivity Analysis - Percent of Fair Values in Excess of Carrying Values</td></tr><tr><td>Current WACC</td><td>Decreased by 50 Basis Points</td><td>WACC Decreased by 25 Basis Points</td><td>WACC Increased by 25 Basis Points</td><td>WACC Increased by 50 Basis Points</td></tr><tr><td>Phosphates Reporting Unit</td><td>18.5%</td><td>26.8%</td><td>22.7%</td><td>14.2%</td><td>9.7%</td></tr><tr><td>Potash Reporting Unit</td><td>8.5%</td><td>17.8%</td><td>13.2%</td><td>3.8%</td><td>(1.2)%</td></tr></table>



As of December 31, 2017, $160.5 million of goodwill was tax deductible.

## 10. FINANCING ARRANGEMENTS

## Mosaic Credit Facility

On November 18, 2016, we entered into a new unsecured five-year credit facility of up to $2.72 billion (the “Mosaic Credit Facility”), which includes a $2.0 billion revolving credit facility and a $720 million term loan facility (the “Term Loan Facility”). The Mosaic Credit Facility is intended to serve as our primary senior unsecured bank credit facility. It increased, extended and replaced our prior unsecured credit facility, which consisted of a revolving facility of up to $1.5 billion (the “Prior Credit Facility”). Letters of credit outstanding under the Prior Credit Facility in the amount of approximately $18.3 million became letters of credit under the Mosaic Credit Facility. The maturity date of the Mosaic Credit Facility, including final maturity of the term loan thereunder, is November 18, 2021. The Term Loan Facility is described below under “Long-Term Debt, including Current Maturities.”

The Mosaic Credit Facility has cross-default provisions that, in general, provide that a failure to pay principal or interest under any one item of other indebtedness in excess of $50 million or $75 million for multiple items of other indebtedness, or breach or default under such indebtedness that permits the holders thereof to accelerate the maturity thereof, will result in a cross-default.

The Mosaic Credit Facility requires Mosaic to maintain certain financial ratios, including a ratio of Consolidated Indebtedness to Consolidated Capitalization Ratio (as defined) of no greater than 0.65 to 1.0 as well as a minimum Interest Coverage Ratio (as defined) of not less than 3.0 to 1.0. We were in compliance with these ratios as of December 31, 2017.

The Mosaic Credit Facility also contains other events of default and covenants that limit various matters. These provisions include limitations on indebtedness, liens, investments and acquisitions (other than capital expenditures), certain mergers, certain sales of assets and other matters customary for credit facilities of this nature.

As of December 31, 2017, we had outstanding letters of credit that utilized a portion of the amount available for revolving loans under the Mosaic Credit Facility of $15.4 million. At December 31, 2016, we had outstanding letters of credit of $15.7 million. The net available borrowings for revolving loans under the Mosaic Credit Facility as of December 31, 2017 and 2016 were approximately $1,984.6 million and $1,984.3 million, respectively. Unused commitment fees under the Mosaic Credit Facility and Prior Credit Facility accrued at an average annual rate of 0.164% for 2017 and 0.128% for 2016, and 0.125% for 2015, generating expenses of $3.3 million, $2.0 million and $1.9 million, respectively.

## Short-Term Debt

Short-term debt consists of the revolving credit facility under the Mosaic Credit Facility, under which there were no borrowings as of December 31, 2017, and various other short-term borrowings related to our international distribution activities. These other short-term borrowings outstanding were $6.1 million and $0.1 million as of December 31, 2017 and 2016, respectively.

We had additional outstanding bilateral letters of credit of $54.8 million as of December 31, 2017, which includes $50 million as required by the 2015 Consent Decrees as described further in Note 13 of our Consolidated Financial Statements.

## Long-Term Debt, including Current Maturities

On November 13, 2017, we issued new senior notes consisting of $550 million aggregate principal amount of 3.250% senior notes due 2022 and $700 million aggregate principal amount of 4.050% senior notes due 2027 (collectively, the “Senior Notes of 2017”).

The Mosaic Credit Facility includes our Term Loan Facility, which replaced a prior unsecured term loan facility entered into on March 20, 2014 under which Mosaic previously borrowed an aggregate of $800 million in term loans, including $370 million in Term A-1 Loans with a final maturity date of September 18, 2017, and $430 million in Term A-2 Loans with a final maturity date of September 18, 2019 (the “Prior Term Loan Facility”). An aggregate of $720 million of Term A-1 Loans and Term A-2 Loans was outstanding on November 18, 2016 (the “Effective Date”). Mosaic borrowed the entire amount available under the Term Loan Facility on the Effective Date and the proceeds (the “Term Loan”) were used to prepay in full, without premium or penalty, the Prior Term Loan Facility.



Mosaic repaid 5.0% of the Term Loan amount on the first anniversary of the Effective Date and is required to repay 5% of the Term Loan amount on the second anniversary of the Effective Date, 7.5% on the third anniversary of the Effective Date, and 10.0% on the fourth anniversary of the Effective Date. The final maturity of the Term Loan Facility is November 18, 2021. Mosaic may prepay its outstanding Term Loan Facility at any time and from time to time, without premium or penalty. On January 17, 2018, we pre-paid $200 million of the outstanding Term Loan.

We have additional senior notes outstanding, consisting of (i) $900 million aggregate principal amount of 4.25% senior notes due 2023, $500 million aggregate principal amount of 5.45% senior notes due 2033, and $600 million aggregate principal amount of 5.625% senior notes due 2043 (collectively, the “Senior Notes of 2013”); and (ii) $450 million aggregate principal amount of 3.750% senior notes due 2021 and $300 million aggregate principal amount of 4.875% senior notes due 2041 (collectively, the “Senior Notes of 2011”).

The Senior Notes of 2011, the Senior Notes of 2013 and the Senior Notes of 2017 are Mosaic’s senior unsecured obligations and rank equally in right of payment with Mosaic’s existing and future senior unsecured indebtedness. The indenture governing these notes contains restrictive covenants limiting debt secured by liens, sale and leaseback transactions and mergers, consolidations and sales of substantially all assets, as well as other events of default.

Two debentures issued by Mosaic Global Holdings, Inc., one of our consolidated subsidiaries, the first due in 2018 (the “2018 Debentures”) and the second due in 2028 (the “2028 Debentures”), remain outstanding with balances of $89.0 million and $147.1 million, respectively, as of December 31, 2017. The 2018 Debentures are due on August 1, 2018, and will be paid off at maturity. The indentures governing the 2018 Debentures and the 2028 Debentures also contain restrictive covenants limiting debt secured by liens, sale and leaseback transactions and mergers, consolidations and sales of substantially all assets, as well as events of default. The obligations under the 2018 Debentures and the 2028 Debentures are guaranteed by the Company and several of its subsidiaries.

Long-term debt primarily consists of term loans, secured notes, unsecured notes, unsecured debentures and capital leases. Long-term debt as of December 31, 2017 and 2016, respectively, consisted of the following:

<table><tr><td rowspan="2">(in millions)</td><td rowspan="2">December 31, 2017 Stated Interest Rate</td><td rowspan="2">December 31, 2017 Effective Interest Rate</td><td rowspan="2">Maturity Date</td><td rowspan="2">December 31, 2017 Stated Value</td><td colspan="2">Combination Fair Market Value Adjustment</td><td rowspan="2">December 31, 2017 Carrying Value</td><td rowspan="2">December 31, 2016 Stated Value</td><td rowspan="2">Combination Fair Market Value Adjustment</td><td rowspan="2">December 31, 2016 Carrying Value</td></tr><tr><td>Discount on Notes Issuance</td><td>December 31, 2017 Carrying Value</td></tr><tr><td>Unsecured notes</td><td>3.25% - 5.63%</td><td>5.01%</td><td>2021-2043</td><td>4,000.0</td><td>—</td><td>(8.5)</td><td>3,991.5</td><td>2,750.0</td><td>—</td><td>(8.0)</td><td>2,742.0</td></tr><tr><td>Unsecured debentures</td><td>7.30% - 7.38%</td><td>7.08%</td><td>2018-2028</td><td>236.1</td><td>1.4</td><td>—</td><td>237.5</td><td>236.1</td><td>1.9</td><td>—</td><td>238.0</td></tr><tr><td>Term loan \( ^{(a)} \)</td><td>Libor plus 1.25%</td><td>Variable</td><td>2021</td><td>684.0</td><td>—</td><td>—</td><td>684.0</td><td>720.0</td><td>—</td><td>—</td><td>720.0</td></tr><tr><td>Capital leases</td><td>2.24% - 19.95%</td><td>4.00%</td><td>2019-2030</td><td>326.6</td><td>—</td><td>—</td><td>326.6</td><td>65.7</td><td>—</td><td>—</td><td>65.7</td></tr><tr><td>Consolidated related party debt \( ^{(b)} \)</td><td>Libor plus 1.125%</td><td>Variable</td><td>2017</td><td>—</td><td>—</td><td>—</td><td>—</td><td>53.7</td><td>—</td><td>—</td><td>53.7</td></tr><tr><td>Other \( ^{(c)} \)</td><td>2.50% - 9.98%</td><td>6.39%</td><td>2019-2023</td><td>(18.0)</td><td>—</td><td>—</td><td>(18.0)</td><td>(1.3)</td><td>—</td><td>—</td><td>(1.3)</td></tr><tr><td>Total long-term debt</td><td></td><td></td><td></td><td>5,228.7</td><td>1.4</td><td>(8.5)</td><td>5,221.6</td><td>3,824.2</td><td>1.9</td><td>(8.0)</td><td>3,818.1</td></tr><tr><td>Less current portion</td><td></td><td></td><td></td><td>344.2</td><td>0.4</td><td>(1.1)</td><td>343.5</td><td>39.3</td><td>0.5</td><td>(1.0)</td><td>38.8</td></tr><tr><td>Total long-term debt, less current maturities</td><td></td><td></td><td></td><td>$ 4,884.5</td><td>$ 1.0</td><td>$(7.4)</td><td>$ 4,878.1</td><td>$ 3,784.9</td><td>$ 1.4</td><td>$(7.0)</td><td>$ 3,779.3</td></tr></table>

(a) Term loan facility is pre-payable.

(b) For further discussion of this transaction, see Note 22 of our Notes to Consolidated Financial Statements.

(c) Includes deferred financing fees related to our long term debt.



Scheduled maturities of long-term debt are as follows for the periods ending December 31:

<table><tr><td></td><td>(in millions)</td><td></td></tr><tr><td>2018</td><td></td><td>$ 343.5</td></tr><tr><td>2019</td><td></td><td>84.0</td></tr><tr><td>2020</td><td></td><td>89.0</td></tr><tr><td>2021</td><td></td><td>793.5</td></tr><tr><td>2022</td><td></td><td>565.4</td></tr><tr><td>Thereafter</td><td></td><td>3,346.2</td></tr><tr><td>Total</td><td></td><td>$ 5,221.6</td></tr></table>

## 11. MARKETABLE SECURITIES HELD IN TRUSTS

In August 2016, Mosaic deposited $630 million into two trust funds (together, the “RCRA Trusts”) created to provide additional financial assurance for the estimated costs (“Gypstack Closure Costs”) of closure and long-term care of our Florida and Louisiana phosphogypsum management systems (“Gypstacks”), as described further in Note 13 of our Notes to Consolidated Financial Statements. Our actual Gypstack Closure Costs are generally expected to be paid by us in the normal course of our Phosphate business; however, funds held in each of the RCRA Trusts can be drawn by the applicable governmental authority in the event we cannot perform our closure and long term care obligations. When our estimated Gypstack Closure Costs with respect to the facilities associated with a RCRA Trust are sufficiently lower than the amount on deposit in that RCRA Trust, we have the right to request that the excess funds be released to us. The same is true for the RCRA Trust balance remaining after the completion of our obligations, which will be performed over a period that may not end until three decades or more after a Gypstack has been closed. The investments held by the RCRA Trusts are managed by independent investment managers with discretion to buy, sell, and invest pursuant to the objectives and standards set forth in the related trust agreements. Amounts reserved to be held or held in the RCRA Trusts (including losses or reinvested earnings) are included in other assets on our Condensed Consolidated Balance Sheets.

The RCRA Trusts hold investments, which are restricted from our general use, in marketable debt securities classified as available-for-sale and are carried at fair value. As a result, unrealized gains and losses are included in other comprehensive income until realized, unless it is determined that the carrying value of an investment is impaired on an other-than-temporary basis. There were no other-than-temporary impairment write-downs on available-for-sale securities during the year ended December 31, 2017.

We review the fair value hierarchy classification on a quarterly basis. Changes in the ability to observe valuation inputs may result in a reclassification of levels for certain securities within the fair value hierarchy. We determine the fair market values of our available-for-sale securities and certain other assets based on the fair value hierarchy described below:

Level 1: Values based on unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities.

Level 2: Values based on quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, or model-based valuation techniques for which all significant assumptions are observable in the market.

Level 3: Values generated from model-based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect our own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.



The estimated fair value of the investments in the RCRA Trusts is as of December 31, 2017, and December 31, 2016, are as follows:

<table><tr><td rowspan="2"></td><td colspan="6">December 31, 2017</td></tr><tr><td>Amortized Cost</td><td>Gross Unrealized Gains</td><td>Gross Unrealized Losses</td><td>Fair Value</td><td></td><td></td></tr><tr><td>Level 1</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Cash and cash equivalents</td><td>$ 1.2</td><td>$ —</td><td>$ —</td><td>$ —</td><td>1.2</td><td></td></tr><tr><td>Level 2</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Corporate debt securities</td><td>186.1</td><td>0.4</td><td>(2.2)</td><td>184.3</td><td></td><td></td></tr><tr><td>Municipal bonds</td><td>184.5</td><td>0.5</td><td>(2.7)</td><td>182.3</td><td></td><td></td></tr><tr><td>U.S. government bonds</td><td>261.7</td><td>—</td><td>(4.4)</td><td>257.3</td><td></td><td></td></tr><tr><td>Total</td><td>$ 633.5</td><td>$ 0.9</td><td>$ (9.3)</td><td>$ 625.1</td><td></td><td></td></tr><tr><td></td><td colspan="6">December 31, 2016</td></tr><tr><td></td><td>Amortized Cost</td><td>Gross Unrealized Gains</td><td>Gross Unrealized Losses</td><td>Fair Value</td><td></td><td></td></tr><tr><td>Level 1</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Cash and cash equivalents</td><td>$ 1.2</td><td>$ —</td><td>$ —</td><td>$ 1.2</td><td></td><td></td></tr><tr><td>Level 2</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Corporate debt securities</td><td>180.2</td><td>—</td><td>(4.3)</td><td>175.9</td><td></td><td></td></tr><tr><td>Municipal bonds</td><td>180.9</td><td>—</td><td>(6.6)</td><td>174.3</td><td></td><td></td></tr><tr><td>U.S. government bonds</td><td>257.4</td><td>0.1</td><td>(0.3)</td><td>257.2</td><td></td><td></td></tr><tr><td>Total</td><td>$ 619.7</td><td>$ 0.1</td><td>$ (11.2)</td><td>$ 608.6</td><td></td><td></td></tr></table>

The following tables show gross unrealized losses and fair values of the RCRA Trusts’ available-for-sale securities that have been in a continuous unrealized loss position deemed to be temporary as of December 31, 2017 and December 31, 2016.

<table><tr><td rowspan="3"></td><td colspan="3">December 31, 2017</td><td colspan="3">December 31, 2016</td></tr><tr><td colspan="3">Less than 12 months</td><td colspan="3">Less than 12 months</td></tr><tr><td>Fair Value</td><td>Gross Unrealized Losses \( ^{(a)} \)</td><td>Fair Value</td><td>Gross Unrealized Losses \( ^{(a)} \)</td><td></td><td></td></tr><tr><td>Corporate debt securities</td><td>$ 44.3</td><td>$ (0.3)</td><td>$ 163.7</td><td>$ (4.3)</td><td></td><td></td></tr><tr><td>Municipal bonds</td><td>64.5</td><td>(0.5)</td><td>162.7</td><td>(6.6)</td><td></td><td></td></tr><tr><td>U.S. government bonds</td><td>255.0</td><td>(4.4)</td><td>202.3</td><td>(0.3)</td><td></td><td></td></tr><tr><td>Total</td><td>$ 363.8</td><td>$ (5.2)</td><td>$ 528.7</td><td>$ (11.2)</td><td></td><td></td></tr></table>

<table><tr><td rowspan="3"></td><td colspan="3">December 31, 2017</td><td colspan="3">December 31, 2016</td></tr><tr><td colspan="3">Greater than 12 months</td><td colspan="3">Greater than 12 months</td></tr><tr><td>Fair Value</td><td>Gross Unrealized Losses \( ^{(a)} \)</td><td>Fair Value</td><td>Gross Unrealized Losses \( ^{(a)} \)</td><td></td><td></td></tr><tr><td>Corporate debt securities</td><td>$ 100.4</td><td>$ (1.9)</td><td>$ —</td><td>$ —</td><td></td><td></td></tr><tr><td>Municipal bonds</td><td>83.3</td><td>(2.2)</td><td>—</td><td>—</td><td></td><td></td></tr><tr><td>U.S. government bonds</td><td>—</td><td>—</td><td>—</td><td>—</td><td></td><td></td></tr><tr><td>Total</td><td>$ 183.7</td><td>$ (4.1)</td><td>$ —</td><td>$ —</td><td></td><td></td></tr></table>



The following table summarizes the balance by contractual maturity of the available-for-sale debt securities invested by the RCRA Trusts as of December 31, 2017. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations before the underlying contracts mature.

<table><tr><td></td><td>December 31, 2017</td></tr><tr><td>Due in one year or less</td><td>$ 28.4</td></tr><tr><td>Due after one year through five years</td><td>367.8</td></tr><tr><td>Due after five years through ten years</td><td>181.0</td></tr><tr><td>Due after ten years</td><td>46.7</td></tr><tr><td>Total debt securities</td><td>$ 623.9</td></tr></table>

Realized gains and (losses), which were determined on a specific identification basis, were $4.7 million and (3.5) million, respectively, for the twelve months ended December 31, 2017 and $0.2 million and $(10.5) million, respectively, for the twelve months ended December 31, 2016.

## 12. INCOME TAXES

In preparing our Consolidated Financial Statements, we utilize the asset and liability approach in accounting for income taxes. We recognize income taxes in each of the jurisdictions in which we have a presence. For each jurisdiction, we estimate the actual amount of income taxes currently payable or receivable, as well as deferred income tax assets and liabilities attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which these temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

The provision for income taxes for 2017, 2016 and 2015, consisted of the following:

<table><tr><td rowspan="2"></td><td rowspan="2">(in millions)</td><td colspan="3">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Current:</td><td></td><td></td><td></td><td></td></tr><tr><td>Federal</td><td></td><td></td><td></td><td></td></tr><tr><td>State</td><td></td><td></td><td></td><td></td></tr><tr><td>Non-U.S.</td><td></td><td></td><td></td><td></td></tr><tr><td>Total current</td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred:</td><td></td><td></td><td></td><td></td></tr><tr><td>Federal</td><td></td><td></td><td></td><td></td></tr><tr><td>State</td><td></td><td></td><td></td><td></td></tr><tr><td>Non-U.S.</td><td></td><td></td><td></td><td></td></tr><tr><td>Total deferred</td><td></td><td></td><td></td><td></td></tr><tr><td>(Benefit from) provision for income taxes</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr></table>



The components of earnings from consolidated companies before income taxes, and the effects of significant adjustments to tax computed at the federal statutory rate, were as follows:

<table><tr><td rowspan="2">(in millions)</td><td colspan="4">Years Ended December 31,</td></tr><tr><td>2017</td><td colspan="2">2016</td><td>2015</td></tr><tr><td>United States earnings (loss)</td><td>$ (82.5)</td><td>$ (96.4)</td><td>$ 676.0</td><td></td></tr><tr><td>Non-U.S. earnings</td><td>456.5</td><td>338.8</td><td>427.3</td><td></td></tr><tr><td>Earnings from consolidated companies before income taxes</td><td>$ 374.0</td><td>$ 242.4</td><td>$ 1,103.3</td><td></td></tr><tr><td>Computed tax at the U.S. federal statutory rate of 35%</td><td>35.0 %</td><td>35.0 %</td><td>35.0 %</td><td></td></tr><tr><td>State and local income taxes, net of federal income tax benefit</td><td>(0.1)%</td><td>(6.1)%</td><td>(0.5)%</td><td></td></tr><tr><td>Percentage depletion in excess of basis</td><td>(13.2)%</td><td>(34.4)%</td><td>(11.0)%</td><td></td></tr><tr><td>Impact of non-U.S. earnings</td><td>(46.9)%</td><td>(4.0)%</td><td>(13.6)%</td><td></td></tr><tr><td>Change in valuation allowance</td><td>148.8 %</td><td>7.7 %</td><td>(0.1)%</td><td></td></tr><tr><td>Resolution of uncertain tax positions</td><td>— %</td><td>(34.9)%</td><td>— %</td><td></td></tr><tr><td>Share-based excess cost/(benefits)</td><td>2.0 %</td><td>2.2 %</td><td>— %</td><td></td></tr><tr><td>Other items (none in excess of 5% of computed tax)</td><td>6.7 %</td><td>3.9 %</td><td>(0.8)%</td><td></td></tr><tr><td>Effective tax rate</td><td>132.3 %</td><td>(30.6)%</td><td>9.0 %</td><td></td></tr></table>

## 2017 Effective Tax Rate

In the year ended December 31, 2017, there are three types of items impacting the effective tax rate; 1) items attributable to ordinary business operations during the year, 2) other items specific to the period, and 3) impacts recorded due to the enactment of the U.S. Tax Cuts and Jobs Act (“The Act”).

The tax impact of our ordinary business operations is impacted by the mix of earnings across jurisdictions in which we operate, by a benefit associated with depletion, and by the impact of certain entities being taxed in both their foreign jurisdiction and the U.S., including foreign tax credits for various taxes incurred.

Tax expense specific to the period included a cost of $15.1 million related to a $10.4 million pre-tax charge resulting from the resolution of a royalty matter with the government of Saskatchewan and related royalty impacts, a $7.5 million cost related to share-based compensation, and an expense of $6.7 million related to the effect on deferred income tax liabilities of an increase in the statutory tax rate for one of our equity method investments, offset by a $14.9 million U.S. state deferred benefit and other miscellaneous benefits of $6.1 million.

## 2017 Impacts of the Tax Cuts and Jobs Act

On December 22, 2017, The Act was enacted, significantly altering U.S. corporate income tax law. The SEC issued Staff Accounting Bulletin 118, which allows companies to record reasonable estimates of enactment impacts where all of the underlying analysis and calculations are not yet complete (“Provisional Estimates”). The Provisional Estimates must be finalized within a one-year measurement period. We recorded Provisional Estimates of the impact of The Act of $457.5 million related to several key changes in the law.

First, The Act imposes a one-time tax on “deemed” repatriation of foreign subsidiaries’ earnings and profits. The repatriation resulted in an estimated non-cash charge of $107.7 million. The charge was offset by a $202.6 million, non-cash reduction in the deferred tax liability related to certain undistributed earnings.

Second, we recognized a $2.3 million non-cash, deferred tax benefit related to the reduction of the U.S. federal rate from 35 percent to 21 percent.

Third, The Act significantly modifies the U.S. taxation of foreign earnings and the treatment of the related foreign tax credits. As a result of these changes, we have recorded valuation allowances against our foreign tax credits and our anticipatory foreign tax credits of $105.8 million and $440.3 million, respectively.



Fourth, The Act repeals the corporate alternative minimum tax, or AMT, system and allows for the cash refund of excess AMT credits. The refundable AMT amounts are subject to a set of federal budgeting rules where a certain portion of the refundable amount will be permanently disallowed (the “Sequestration Rules”). We estimate that we will receive a cash refund of $121.5 million net of an $8.6 million charge related to the Sequestration Rules. The estimated refundable AMT credit is included in other noncurrent assets.

The final impacts of The Act may differ from these provisional estimates, possibly materially, due to, among other things, changes in interpretations and assumptions we have made, guidance that may be issued, and actions we may take as a result of The Act.

The Act introduced a new category of taxable income called global intangible low-taxed income (“GILTI”). No provisional estimates were recorded for GILTI since we have not completed our full analysis of that provision of The Act. We have not yet elected an accounting policy to record any GILTI liabilities as either deferred tax items or as period costs.

## 2016 Effective Tax Rate

In the year ended December 31, 2016, tax expense specific to the period included a benefit of $54.2 million, which includes a domestic benefit of $85.8 million related to the resolution of an Advanced Pricing Agreement, which is a tax treaty-based process, partially offset by a $23.3 million expense related to distributions from certain non-U.S. subsidiaries and $8.3 million of expense primarily related to share-based excess cost.

During 2016, our income tax rate was favorably impacted by the mix of earnings across the jurisdictions in which we operate and by a benefit associated with depletion when compared to the year ended December 31, 2015. Our income tax rate is lower in 2016 compared to 2015 because our deductions are relatively fixed in dollars, while our profitability has been reduced; therefore, the deductions are a larger percentage of income.

## 2015 Effective Tax Rate

In the year ended December 31, 2015, the impact of non-U.S. earnings reflects a rate differential on our non-U.S. subsidiaries and foreign tax credits for various taxes incurred by certain entities that are taxed in both their local currency jurisdiction and the U.S. The impact of non-U.S. earnings also includes a benefit specific to the period of $28.2 million, which consists of a benefit of $14.5 million primarily related to changes in estimates associated with an Advanced Pricing Agreement, which is a tax treaty-based process, a benefit of $6.2 million related to losses on the sale of our distribution business in Chile and the reduction in the tax rate for one of our equity method investments that resulted in a benefit of $7.5 million. State and local income taxes includes a benefit of $18.4 million related to the resolution of certain state tax matters.



Significant components of our deferred tax liabilities and assets as of December 31 were as follows:

<table><tr><td rowspan="2">(in millions)</td><td colspan="2">December 31,</td></tr><tr><td>2017</td><td>2016</td></tr><tr><td>Deferred tax liabilities:</td><td></td><td></td></tr><tr><td>Depreciation and amortization</td><td>$     864.2</td><td>$     960.5</td></tr><tr><td>Depletion</td><td>260.9</td><td>336.7</td></tr><tr><td>Partnership tax basis differences</td><td>67.6</td><td>111.0</td></tr><tr><td>Undistributed earnings of non-U.S. subsidiaries</td><td>15.0</td><td>213.8</td></tr><tr><td>Other liabilities</td><td>150.6</td><td>47.1</td></tr><tr><td>Total deferred tax liabilities</td><td>$     1,358.3</td><td>$     1,669.1</td></tr><tr><td>Deferred tax assets:</td><td></td><td></td></tr><tr><td>Alternative minimum tax credit carryforwards</td><td>$     46.8</td><td>$     244.7</td></tr><tr><td>Capital loss carryforwards</td><td>0.1</td><td>6.3</td></tr><tr><td>Foreign tax credit carryforwards</td><td>322.9</td><td>525.6</td></tr><tr><td>Net operating loss carryforwards</td><td>112.0</td><td>204.3</td></tr><tr><td>Pension plans and other benefits</td><td>2.1</td><td>15.4</td></tr><tr><td>Asset retirement obligations</td><td>174.1</td><td>256.2</td></tr><tr><td>Deferred revenue</td><td>252.0</td><td>—</td></tr><tr><td>Other assets</td><td>169.7</td><td>274.4</td></tr><tr><td>Subtotal</td><td>1,079.7</td><td>1,526.9</td></tr><tr><td>Valuation allowance</td><td>584.1</td><td>30.6</td></tr><tr><td>Net deferred tax assets</td><td>495.6</td><td>1,496.3</td></tr><tr><td>Net deferred tax liabilities</td><td>$ (862.7)</td><td>$ (172.8)</td></tr></table>

We have certain entities that are taxed in both their local currency jurisdiction and the U.S. As a result, we have deferred tax balances for both jurisdictions. As of December 31, 2017 and 2016, these non-U.S. deferred taxes are offset by approximately $440.3 million and $410.1 million, respectively, of anticipated foreign tax credits included within our depreciation and depletion components of deferred tax liabilities above. As of December 31, 2017, due to The Act we have recorded a valuation allowance of $440.3 million against the anticipated foreign tax credits.

As of December 31, 2017, we had estimated carryforwards for tax purposes as follows: alternative minimum tax credits of $46.8 million plus an additional $121.5 million of alternative minimum tax credits that we estimate will be refundable due to The Act, net operating losses of $480.8 million, foreign tax credits of $322.9 million and $9.2 million of non-U.S. business credits. These carryforward benefits may be subject to limitations imposed by the Internal Revenue Code, and in certain cases, provisions of foreign law. As discussed above, we estimate that $121.5 million of the alternative minimum tax credit carryforwards will be refunded while the remaining $46.8 million are expected to be utilized to offset future U.S. federal tax liabilities. Approximately $204.9 million of our net operating loss carryforwards relate to Brazil and can be carried forward indefinitely but are limited to 30 percent of taxable income each year. The majority of the remaining net operating loss carryforwards relate to certain U.S. states and can be carried forward for 20 years. Of the $322.9 million of foreign tax credits, approximately $39.1 million have an expiration date of 2023 and approximately $237.0 million have an expiration date of 2026. The realization of our foreign tax credit carryforwards is dependent on market conditions, tax law changes, and other business outcomes including our ability to generate certain types of taxable income. As a result of changes in U.S. tax law due to The Act, the Company has recorded valuation allowances against its foreign tax credits of $105.8 million.

The Act imposes a one-time tax on the “deemed” repatriation of foreign subsidiaries’ earnings and profits and establishes an exemption from U.S. tax for future dividends from foreign subsidiaries. As such, we are only subject to withholding tax on the actual repatriation of non-U.S. earnings. As of December 31, 2017, the company has recorded a $15 million deferred tax liability associated with the future repatriation of $300 million of undistributed earnings of non-U.S. subsidiaries.



## Valuation Allowance

In assessing the need for a valuation allowance, we consider whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. We evaluate our ability to realize the tax benefits associated with deferred tax assets by analyzing the relative impact of all the available positive and negative evidence regarding our forecasted taxable income using both historical and projected future operating results, the reversal of existing taxable temporary differences, taxable income in prior carry-back years (if permitted) and the availability of tax planning strategies. The ultimate realization of deferred tax assets is dependent upon the generation of certain types of future taxable income during the periods in which those temporary differences become deductible. In making this assessment, we consider the scheduled reversal of deferred tax liabilities, our ability to carry back the deferred tax asset, projected future taxable income, and tax planning strategies. A valuation allowance will be recorded in each jurisdiction in which a deferred income tax asset is recorded when it is more likely than not that the deferred income tax asset will not be realized. Changes in deferred tax asset valuation allowances typically impact income tax expense.

For the year ended December 31, 2017, the valuation allowance increased by $553.5 million, of which $546.1 million related to changes in the U.S. tax law imposed by The Act with the remaining amount due to the conclusion we are not more likely than not to use attributes at a Netherlands subsidiary.

For the year ended December 31, 2016, the valuation allowance increased by $18.7 million primarily due to the conclusion we are not more likely than not to use attributes at a Netherlands subsidiary and certain U.S. states.

For the year ended year ended December 31, 2015, the valuation allowance decreased $16.4 million primarily due to the sale of the Chile distribution business.

## Uncertain Tax Positions

Accounting for uncertain income tax positions is determined by prescribing a minimum probability threshold that a tax position must meet before a financial statement benefit is recognized. This minimum threshold is that a tax position is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any related appeals or litigation processes, based on the technical merits of the position. The tax benefit to be recognized is measured as the largest amount of benefit that is greater than a fifty percent likelihood of being realized upon ultimate settlement.

As of December 31, 2017, we had $39.3 million of gross uncertain tax positions. If recognized, the benefit to our effective tax rate in future periods would be approximately $21.0 million of that amount. During 2017, we recorded gross increases in our uncertain tax positions of $10.7 million related to certain U.S. and non-U.S. tax matters, of which $8.2 million impacted the effective tax rate. This increase was offset by items not included in gross uncertain tax positions.

Based upon the information available as of December 31, 2017, it is reasonably possible that the amount of unrecognized tax benefits will change in the next twelve months; however, the change cannot reasonably be estimated.

<table><tr><td rowspan="2"></td><td colspan="4">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td></td></tr><tr><td>Gross unrecognized tax benefits, beginning of period</td><td>$ 27.1</td><td>$ 98.6</td><td>$ 100.6</td><td></td></tr><tr><td>Gross increases:</td><td></td><td></td><td></td><td></td></tr><tr><td>Prior period tax positions</td><td>1.9</td><td>13.5</td><td>18.4</td><td></td></tr><tr><td>Current period tax positions</td><td>8.5</td><td>6.9</td><td>1.1</td><td></td></tr><tr><td>Gross decreases:</td><td></td><td></td><td></td><td></td></tr><tr><td>Prior period tax positions</td><td>—</td><td>(91.6)</td><td>(20.2)</td><td></td></tr><tr><td>Currency translation</td><td>1.8</td><td>(0.3)</td><td>(1.3)</td><td></td></tr><tr><td>Gross unrecognized tax benefits, end of period</td><td>$ 39.3</td><td>$ 27.1</td><td>$ 98.6</td><td></td></tr></table>

We recognize interest and penalties related to unrecognized tax benefits as a component of our income tax expense. Interest and penalties accrued in our Consolidated Balance Sheets as of December 31, 2017 and 2016 are $4.1 million and $3.2 million, respectively, and are included in other noncurrent liabilities in the Consolidated Balance Sheets.



We operate in multiple tax jurisdictions, both within the United States and outside the United States, and face audits from various tax authorities regarding transfer pricing, deductibility of certain expenses, and intercompany transactions, as well as other matters. With few exceptions, we are no longer subject to examination for tax years prior to 2010.

We are currently under audit by the U.S. Internal Revenue Service for tax years ended December 31, 2014, and December 31, 2015, and by the Canada Revenue Agency for tax years ended May 31, 2013, and December 31, 2013. Based on the information available, we do not anticipate significant changes to our unrecognized tax benefits as a result of these examinations other than the amounts discussed above.

## 13. ACCOUNTING FOR ASSET RETIREMENT OBLIGATIONS

We recognize our estimated asset retirement obligations (“AROs”) in the period in which we have an existing legal obligation associated with the retirement of a tangible long-lived asset, and the amount of the liability can be reasonably estimated. The ARO is recognized at fair value when the liability is incurred with a corresponding increase in the carrying amount of the related long lived asset. We depreciate the tangible asset over its estimated useful life. The liability is adjusted in subsequent periods through accretion expense which represents the increase in the present value of the liability due to the passage of time. Such depreciation and accretion expenses are included in cost of goods sold for operating facilities and other operating expense for indefinitely closed facilities.

Our legal obligations related to asset retirement require us to: (i) reclaim lands disturbed by mining as a condition to receive permits to mine phosphate ore reserves; (ii) treat low pH process water in Gypstacks to neutralize acidity; (iii) close and monitor Gypstacks at our Florida and Louisiana facilities at the end of their useful lives; (iv) remediate certain other conditional obligations; (v) remove all surface structures and equipment, plug and abandon mine shafts, contour and revegetate, as necessary, and monitor for five years after closing our Carlsbad, New Mexico facility and (vi) decommission facilities, manage tailings and execute site reclamation at our Saskatchewan potash mines at the end of their useful lives. The estimated liability for these legal obligations is based on the estimated cost to satisfy the above obligations which is discounted using a credit-adjusted risk-free rate.

A reconciliation of our AROs is as follows:

<table><tr><td rowspan="2"></td><td rowspan="2">(in millions)</td><td colspan="2">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td></tr><tr><td>AROs, beginning of period</td><td></td><td>$ 849.9</td><td>$ 841.6</td></tr><tr><td>Liabilities incurred</td><td></td><td>27.1</td><td>28.0</td></tr><tr><td>Liabilities settled</td><td></td><td>(64.8)</td><td>(67.4)</td></tr><tr><td>Accretion expense</td><td></td><td>25.7</td><td>40.4</td></tr><tr><td>Revisions in estimated cash flows</td><td></td><td>15.7</td><td>5.8</td></tr><tr><td>Foreign currency translation</td><td></td><td>5.7</td><td>1.5</td></tr><tr><td>AROs, end of period</td><td></td><td>859.3</td><td>849.9</td></tr><tr><td>Less current portion</td><td></td><td>98.1</td><td>102.0</td></tr><tr><td></td><td></td><td>$ 761.2</td><td>$ 747.9</td></tr></table>

## Gypstack Closure Costs

A majority of our ARO relates to Gypstack Closure Costs. For financial reporting purposes, we recognize our estimated Gypstack Closure Costs at their present value. This present value determined for financial reporting purposes is reflected on our Consolidated Balance Sheets in accrued liabilities and other noncurrent liabilities. As of December 31, 2017, and December 31, 2016, the present value of our Gypstack Closure Costs ARO reflected in our Consolidated Balance Sheet was approximately $529.7 million and $527.1 million, respectively.

As discussed below, we have arrangements to provide financial assurance for the estimated Gypstack Closure Costs associated with our facilities in Florida and Louisiana.



EPA RCRA Initiative. On September 30, 2015, we and our subsidiary, Mosaic Fertilizer, LLC (“Mosaic Fertilizer”), reached agreements with the U.S. Environmental Protection Agency (“EPA”), the U.S. Department of Justice (“DOJ”), the Florida Department of Environmental Protection (“FDEP”) and the Louisiana Department of Environmental Quality on the terms of two consent decrees (collectively, the “2015 Consent Decrees”) to resolve claims relating to our management of certain waste materials onsite at our Riverview, New Wales, Mulberry, Green Bay, South Pierce and Bartow fertilizer manufacturing facilities in Florida and our Faustina and Uncle Sam facilities in Louisiana. This followed a 2003 announcement by the EPA Office of Enforcement and Compliance Assurance that it would be targeting facilities in mineral processing industries, including phosphoric acid producers, for a thorough review under the U.S. Resource Conservation and Recovery Act (“RCRA”) and related state laws. As discussed below, a separate consent decree was previously entered into with EPA and the FDEP with respect to RCRA compliance at the Plant City, Florida, phosphate concentrates facility (the “Plant City Facility”) that we acquired as part of our acquisition (the “CF Phosphate Assets Acquisition”) of the Florida phosphate assets and assumption of certain related liabilities of CF Industries, Inc. (“CF”).

The 2015 Consent Decrees became effective on August 5, 2016, and require the following:

• Payment of a cash penalty of approximately $8.0 million, in the aggregate, which was made in August 2016.

• Payment of up to $2.2 million to fund specific environmental projects unrelated to our facilities, substantially all of which was paid in 2016 and 2017.

• Modification of certain operating practices and undertaking certain capital improvement projects over a period of several years that are expected to result in capital expenditures likely to exceed $200 million in the aggregate.

- Provision of additional financial assurance for the estimated Gypstack Closure Costs for Gypstacks at the covered facilities. The RCRA Trusts are discussed below and in Note 11 to our Consolidated Financial Statements. We also issued a $50.0 million letter of credit in 2017 to further support our financial assurance obligations under the Florida 2015 Consent Decree. In addition, we have agreed to guarantee the difference between the amounts held in each RCRA Trust (including any earnings) and the estimated closure and long-term care costs.

As of December 31, 2017, the undiscounted amount of our Gypstack Closure Costs ARO associated with the facilities covered by the 2015 Consent Decrees, determined using the assumptions used for financial reporting purposes, was approximately $1.4 billion and the present value of our Gypstack Closure Costs ARO reflected in our Consolidated Balance Sheet for those facilities was approximately $420 million.

In 2016 we deposited cash, in the total amount of $630 million, into the RCRA Trusts to provide financial assurance as required under the 2015 Consent Decrees. See Note 11 to our Consolidated Financial Statements. The amount deposited corresponds to a material portion of our estimated Gypstack Closure Costs ARO associated with the covered facilities.

Plant City and Bonnie Facilities. As part of the CF Phosphate Assets Acquisition, we assumed certain ARO related to Gypstack Closure Costs at both the Plant City Facility and a closed Florida phosphate concentrates facility in Bartow, Florida, (the “Bonnie Facility”) that we acquired. Associated with these assets are two related financial assurance arrangements for which we became responsible and that provide sources of funds for the estimated Gypstack Closure Costs for these facilities, pursuant to federal or state law, which the government can draw against in the event we cannot perform such closure activities. One was initially a trust (the “Plant City Trust”) established to meet the requirements under a consent decree with EPA and the FDEP with respect to RCRA compliance at Plant City that also satisfied Florida financial assurance requirements at that site. Beginning in September 2016, as a substitute for the financial assurance provided through the Plant City Trust, we have provided financial assurance for Plant City in the form of a surety bond delivered to EPA (the “Plant City Bond”), currently in the amount of $245.6 million, reflecting our updated closure cost estimates. The other is a trust fund (the “Bonnie Facility Trust”) established to meet the requirements under Florida financial assurance regulations that apply to the Bonnie Facility. The balance in the Bonnie Facility Trust in $20.9 million as of December 31, 2017. Both financial assurance funding obligations require estimates of future expenditures that could be impacted by refinements in scope, technological developments, new information, cost inflation, changes in regulations, discount rates and the timing of activities. We are also permitted to satisfy our financial assurance obligations with respect to the Bonnie and Plant City Facilities by means of alternative credit support, including surety bonds or letters of credit. Under our current approach to satisfying applicable requirements, additional financial assurance would be required in the future if increases in cost estimates exceed the face amount of the Plant City Bond or the amount held in the Bonnie Facility Trust.



As of December 31, 2017, and December 31, 2016, the aggregate amount of ARO associated with the Plant City and Bonnie Facilities that was included in our consolidated balance sheet was $97.7 million and $93.5 million, respectively. The aggregate amount represented by the Plant City Bond exceeds the aggregate amount of ARO associated with that Facility because the amount of financial assurance we are required to provide represents the aggregate undiscounted estimated amount to be paid by us in the normal course of our Phosphates business over a period that may not end until three decades or more after the Gypstack has been closed, whereas the ARO included in our Consolidated Balance Sheet reflects the discounted present value of those estimated amounts.

As part of the acquisition, we also assumed ARO related to land reclamation.

## 14. ACCOUNTING FOR DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

We periodically enter into derivatives to mitigate our exposure to foreign currency risks, interest rate movements and the effects of changing commodity and freight prices. We record all derivatives on the Consolidated Balance Sheets at fair value. The fair value of these instruments is determined by using quoted market prices, third party comparables, internal estimates or other external pricing sources. We net our derivative asset and liability positions when we have a master netting arrangement in place. Changes in the fair value of the foreign currency, interest rates, commodity, and freight derivatives are immediately recognized in earnings. As of December 31, 2017 and 2016, the gross asset position of our derivative instruments was $15.6 million and $16.2 million, respectively, and the gross liability position of our liability instruments was $26.7 million and $17.3 million, respectively.

We do not apply hedge accounting treatments to our foreign currency exchange contracts, commodities contracts, or freight contracts. Unrealized gains and (losses) on foreign currency exchange contracts used to hedge cash flows related to the production of our product are included in cost of goods sold in the Consolidated Statements of Earnings. Unrealized gains and (losses) on commodities contracts and certain forward freight agreements are also recorded in cost of goods sold in the Consolidated Statements of Earnings. Unrealized gains or (losses) on foreign currency exchange contracts used to hedge cash flows that are not related to the production of our products are included in the foreign currency transaction gain (loss) line in the Consolidated Statements of Earnings in our Corporate, Eliminations and Other segment.

We apply fair value hedge accounting treatment to our fixed-to-floating interest rate contracts. Under these arrangements, we agree to exchange, at specified intervals, the difference between fixed and floating interest amounts calculated by reference to an agreed-upon notional principal amount. The mark-to-market of these fair value hedges is recorded as gains or losses in interest expense and is offset by the gain or loss of the underlying debt instrument, which also is recorded in interest expense. These fair value hedges are highly effective and, thus, as of December 31, 2017, the impact on earnings due to hedge ineffectiveness was immaterial. Consistent with Mosaic’s intent to have floating rate debt as a portion of its outstanding debt, in December 2016 and the first quarter of 2017, we entered into four and five, respectively, fixed-to-floating interest rate swap agreements with a total notional amount of $310.0 million and $275.0 million, respectively, related to our Senior Notes due 2023.

In December 2016, we entered into forward starting interest rate swap agreements to hedge our exposure to changes in future interest rates related to an anticipated debt issuance to fund the cash portion of our planned acquisition of Vale Fertilizantes S.A. as described in Note 23. We did not apply hedge accounting treatment to these contracts and cash was settled at the time of pricing of the related debt. In November 2017, we completed the debt issuance and settled all of our outstanding pre-issuance interest rate swap agreements. These agreements had a negative impact on pre-tax earnings of approximately $12 million for the year ended December 31, 2017.

The following is the total absolute notional volume associated with our outstanding derivative instruments:

(in millions of Units)

<table><tr><td>Instrument</td><td>Derivative Category</td><td>Unit of Measure</td><td>December 31, 2017</td><td>December 31, 2016</td></tr><tr><td>Foreign currency derivatives</td><td>Foreign Currency</td><td>US Dollars</td><td>813.5</td><td>949.9</td></tr><tr><td>Interest rate derivatives</td><td>Interest Rate</td><td>US Dollars</td><td>585.0</td><td>410.0</td></tr><tr><td>Natural gas derivatives</td><td>Commodity</td><td>MMbtu</td><td>43.0</td><td>21.7</td></tr></table>



## Credit-Risk-Related Contingent Features

Certain of our derivative instruments contain provisions that require us to post collateral. These provisions also state that if our debt were to be rated below investment grade, certain counterparties to the derivative instruments could request full collateralization on derivative instruments in net liability positions. The aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a liability position as of December 31, 2017 and 2016 was $15.0 million and $6.0 million, respectively. We have not posted cash collateral in the normal course of business associated with these contracts. If the credit-risk-related contingent features underlying these agreements were triggered on December 31, 2017, we would be required to post an additional $14.0 million of collateral assets, which are either cash or U.S. Treasury instruments, to the counterparties.

## Counterparty Credit Risk

We enter into foreign exchange, interest rate and certain commodity derivatives, primarily with a diversified group of highly rated counterparties. We continually monitor our positions and the credit ratings of the counterparties involved and limit the amount of credit exposure to any one party. While we may be exposed to potential losses due to the credit risk of non-performance by these counterparties, losses are not anticipated. We closely monitor the credit risk associated with our counterparties and customers and to date have not experienced material losses.

## 15. FAIR VALUE MEASUREMENTS

Following is a summary of the valuation techniques for assets and liabilities recorded in our Consolidated Balance Sheets at fair value on a recurring basis:

Foreign Currency Derivatives—The foreign currency derivative instruments that we currently use are forward contracts and zero-cost collars, which typically expire within eighteen months. Most of the valuations are adjusted by a forward yield curve or interest rates. In such cases, these derivative contracts are classified within Level 2. Some valuations are based on exchange-quoted prices, which are classified as Level 1. Changes in the fair market values of these contracts are recognized in the Consolidated Financial Statements as a component of cost of goods sold in our Corporate, Eliminations and Other segment, or foreign currency transaction (gain) loss. As of December 31, 2017 and 2016, the gross asset position of our foreign currency derivative instruments was $15.4 million and $8.3 million, respectively, and the gross liability position of our foreign currency derivative instruments was $6.5 million and $14.6 million, respectively.

Commodity Derivatives—The commodity contracts primarily relate to natural gas. The commodity derivative instruments that we currently use are forward purchase contracts, swaps, and three-way collars. The natural gas contracts settle using NYMEX futures or AECO price indexes, which represent fair value at any given time. The contracts' maturities are for future months and settlements are scheduled to coincide with anticipated gas purchases during those future periods. Quoted market prices from NYMEX and AECO are used to determine the fair value of these instruments. These market prices are adjusted by a forward yield curve and are classified within Level 2. Changes in the fair market values of these contracts are recognized in the Consolidated Financial Statements as a component of cost of goods sold in our Corporate, Eliminations and Other segment. As of December 31, 2017 and 2016, the gross asset position of our commodity derivative instruments was $0.1 million and $6.3 million, respectively, and the gross liability position of our commodity derivative instruments was $17.9 million and $1.3 million, respectively.

Interest Rate Derivatives—We manage interest expense through interest rate contracts to convert a portion of our fixed-rate debt into floating-rate debt. We also enter into interest rate swap agreements to hedge our exposure to changes in future interest rates related to anticipated debt issuances. Valuations are based on external pricing sources and are classified as Level 2. Changes in the fair market values of these contracts are recognized in the Consolidated Financial Statements as a component of interest expense. As of December 31, 2017 and 2016, the gross asset position of our interest rate swap instruments was $0.1 million and $1.6 million, respectively, and the gross liability position of our interest rate swap instruments was $2.3 million and $1.4 million, respectively.



## Financial Instruments

The carrying amounts and estimated fair values of our financial instruments are as follows:

<table><tr><td rowspan="3"></td><td colspan="4">December 31,</td></tr><tr><td colspan="2">2017</td><td colspan="2">2016</td></tr><tr><td>Carrying Amount</td><td>Fair Value</td><td>Carrying Amount</td><td>Fair Value</td></tr><tr><td>(in millions)</td><td>$ 2,153.5</td><td>$ 2,153.5</td><td>$ 673.1</td><td>$ 673.1</td></tr><tr><td>Cash and cash equivalents</td><td>642.6</td><td>642.6</td><td>627.8</td><td>627.8</td></tr><tr><td>Accounts receivable</td><td>540.9</td><td>540.9</td><td>471.8</td><td>471.8</td></tr><tr><td>Accounts payable</td><td>386.2</td><td>386.2</td><td>128.8</td><td>128.8</td></tr><tr><td>Structured accounts payable arrangements</td><td>6.1</td><td>6.1</td><td>0.1</td><td>0.1</td></tr><tr><td>Short-term debt</td><td>5,221.6</td><td>5,431.8</td><td>3,818.1</td><td>3,854.8</td></tr><tr><td>Long-term debt, including current portion</td><td>5,221.6</td><td>5,431.8</td><td>3,818.1</td><td>3,854.8</td></tr></table>

For cash and cash equivalents, accounts receivable, accounts payable, structured accounts payable arrangements and short-term debt, the carrying amount approximates fair value because of the short-term maturity of those instruments. The fair value of long-term debt is estimated using quoted market prices for the publicly registered notes and debentures, classified as Level 1 and Level 2, respectively, within the fair value hierarchy, depending on the market liquidity of the debt. For information regarding the fair value of our marketable securities held in trusts, see Note 11 of our Notes to Consolidated Financial Statements.

## 16. GUARANTEES AND INDEMNITIES

We enter into various contracts that include indemnification and guarantee provisions as a routine part of our business activities. Examples of these contracts include asset purchase and sale agreements, surety bonds, financial assurances to regulatory agencies in connection with reclamation and closure obligations, commodity sale and purchase agreements, and other types of contractual agreements with vendors and other third parties. These agreements indemnify counterparties for matters such as reclamation and closure obligations, tax liabilities, environmental liabilities, litigation and other matters, as well as breaches by Mosaic of representations, warranties and covenants set forth in these agreements. In many cases, we are essentially guaranteeing our own performance, in which case the guarantees do not fall within the scope of the accounting and disclosures requirements under U.S. GAAP.

Our more significant guarantees and indemnities are as follows:

Guarantees to Brazilian Financial Parties. From time to time, we issue guarantees to financial parties in Brazil for certain amounts owed the institutions by certain customers of Mosaic. The guarantees are for all or part of the customers' obligations. In the event that the customers default on their payments to the institutions and we would be required to perform under the guarantees, we have in most instances obtained collateral from the customers. We monitor the nonperformance risk of the counterparties and have noted no material concerns regarding their ability to perform on their obligations. The guarantees generally have a one-year term, but may extend up to two years or longer depending on the crop cycle, and we expect to renew many of these guarantees on a rolling twelve-month basis. As of December 31, 2017, we have estimated the maximum potential future payment under the guarantees to be $68.1 million. The fair value of our guarantees is immaterial to the Consolidated Financial Statements as of December 31, 2017 and 2016.

Other Indemnities. Our maximum potential exposure under other indemnification arrangements can range from a specified dollar amount to an unlimited amount, depending on the nature of the transaction. Total maximum potential exposure under these indemnification arrangements is not estimable due to uncertainty as to whether claims will be made or how they will be resolved. We do not believe that we will be required to make any material payments under these indemnity provisions.

Because many of the guarantees and indemnities we issue to third parties do not limit the amount or duration of our obligations to perform under them, there exists a risk that we may have obligations in excess of the amounts described above. For those guarantees and indemnities that do not limit our liability exposure, we may not be able to estimate what our liability would be until a claim is made for payment or performance due to the contingent nature of these arrangements. See Note 18



of our Notes to Consolidated Financial Statements for additional information for indemnification provisions related to the Cargill Transaction.

## 17. PENSION PLANS AND OTHER BENEFITS

We sponsor pension and postretirement benefits through a variety of plans including defined benefit plans, defined contribution plans, and postretirement benefit plans in North America and certain of our international locations. We reserve the right to amend, modify, or terminate the Mosaic sponsored plans at any time, subject to provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”), prior agreements and our collective bargaining agreements.

## Defined Benefit and Postretirement Medical Benefit Plans

We sponsor various defined benefit pension plans in the U.S. and in Canada. Benefits are based on different combinations of years of service and compensation levels, depending on the plan. Generally, contributions to the U.S. plans are made to meet minimum funding requirements of ERISA, while contributions to Canadian plans are made in accordance with Pension Benefits Acts instituted by the provinces of Saskatchewan and Ontario. Certain employees in the U.S. and Canada, whose pension benefits exceed Internal Revenue Code and Canada Revenue Agency limitations, respectively, are covered by supplementary non-qualified, unfunded pension plans. In 2016, as part of an initiative to “de-risk” certain of its pension plan obligations, Mosaic offered a one-time lump-sum window to terminated vested participants within select plans who had not commenced distribution of their benefits. As a result of this initiative, there was a decrease of $43.3 million of projected benefit obligations for the defined benefit plans.

We provide certain health care benefit plans for certain retired employees (“Retiree Health Plans”) which may be either contributory or non-contributory and contain certain other cost-sharing features such as deductibles and coinsurance. The Retiree Health Plans are unfunded and the projected benefit obligation was $41.3 million and $44.9 million as of December 31, 2017 and 2016, respectively. The related income statement effects of the Retiree Health Plans are not material to the Company.



## Accounting for Pension Plans

The year-end status of the North American pension plans was as follows:

<table><tr><td rowspan="3">(in millions)</td><td colspan="2">Pension Plans</td></tr><tr><td colspan="2">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td></tr><tr><td>Change in projected benefit obligation:</td><td></td><td></td></tr><tr><td>Benefit obligation at beginning of period</td><td>$     713.5</td><td>$     731.2</td></tr><tr><td>Service cost</td><td>5.9</td><td>5.8</td></tr><tr><td>Interest cost</td><td>24.3</td><td>25.1</td></tr><tr><td>Actuarial loss</td><td>44.2</td><td>16.0</td></tr><tr><td>Currency fluctuations</td><td>24.0</td><td>9.7</td></tr><tr><td>Benefits paid</td><td>(45.8)</td><td>(84.9)</td></tr><tr><td>Plan Amendments</td><td>—</td><td>10.6</td></tr><tr><td>Projected benefit obligation at end of period</td><td>$     766.1</td><td>$     713.5</td></tr><tr><td>Change in plan assets:</td><td></td><td></td></tr><tr><td>Fair value at beginning of period</td><td>$     715.6</td><td>$     726.7</td></tr><tr><td>Currency fluctuations</td><td>25.9</td><td>10.1</td></tr><tr><td>Actual return</td><td>85.8</td><td>52.2</td></tr><tr><td>Company contribution</td><td>11.7</td><td>11.5</td></tr><tr><td>Benefits paid</td><td>(45.8)</td><td>(84.9)</td></tr><tr><td>Fair value at end of period</td><td>$     793.2</td><td>$     715.6</td></tr><tr><td>Funded status of the plans as of the end of period</td><td>$     27.1</td><td>$     2.1</td></tr><tr><td>Amounts recognized in the consolidated balance sheets:</td><td></td><td></td></tr><tr><td>Noncurrent assets</td><td>$     41.1</td><td>$     24.8</td></tr><tr><td>Current liabilities</td><td>(0.8)</td><td>(0.7)</td></tr><tr><td>Noncurrent liabilities</td><td>(13.2)</td><td>(22.0)</td></tr><tr><td>Amounts recognized in accumulated other comprehensive (income) loss</td><td></td><td></td></tr><tr><td>Prior service costs</td><td>$     20.8</td><td>$     23.2</td></tr><tr><td>Actuarial loss</td><td>109.8</td><td>109.6</td></tr></table>

The accumulated benefit obligation for the defined benefit pension plans was $765.1 million and $712.1 million as of December 31, 2017 and 2016, respectively.



The components of net annual periodic benefit costs and other amounts recognized in other comprehensive income include the following components:

<table><tr><td rowspan="3">(in millions)</td><td colspan="3">Pension Plans</td></tr><tr><td colspan="3">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Net Periodic Benefit Cost</td><td></td><td></td><td></td></tr><tr><td>Service cost</td><td>$ 5.9</td><td>$ 5.8</td><td>$ 6.5</td></tr><tr><td>Interest cost</td><td>24.3</td><td>25.1</td><td>30.1</td></tr><tr><td>Expected return on plan assets</td><td>(41.3)</td><td>(44.9)</td><td>(46.9)</td></tr><tr><td>Amortization of:</td><td></td><td></td><td></td></tr><tr><td>Prior service cost</td><td>2.3</td><td>1.7</td><td>1.6</td></tr><tr><td>Actuarial loss</td><td>2.8</td><td>5.0</td><td>6.2</td></tr><tr><td>Preliminary net periodic benefit cost (income)</td><td>$ (6.0)</td><td>$ (7.3)</td><td>$ (2.5)</td></tr><tr><td>Curtailment/settlement expense</td><td>2.4</td><td>6.2</td><td>2.4</td></tr><tr><td>Total net periodic benefit cost (income)</td><td>$ (3.6)</td><td>$ (1.1)</td><td>$ (0.1)</td></tr><tr><td>Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income</td><td></td><td></td><td></td></tr><tr><td>Prior service cost (credit) recognized in other comprehensive income</td><td>$ (3.8)</td><td>$ 8.9</td><td>$ (1.7)</td></tr><tr><td>Net actuarial loss (gain) recognized in other comprehensive income</td><td>(4.0)</td><td>(2.5)</td><td>3.4</td></tr><tr><td>Total recognized in other comprehensive income</td><td>$ (7.8)</td><td>$ 6.4</td><td>$ 1.7</td></tr><tr><td>Total recognized in net periodic benefit (income) cost and other comprehensive income</td><td>$ (11.4)</td><td>$ 5.3</td><td>$ 1.6</td></tr></table>

The estimated net actuarial (gain) loss and prior service cost (credit) for the pension plans and postretirement plans that will be amortized from accumulated other comprehensive income into net periodic benefit cost in 2018 is $11.4 million.

The following estimated benefit payments, which reflect estimated future service are expected to be paid by the related plans in the years ending December 31:

<table><tr><td>(in millions)</td><td>Pension Plans Benefit Payments</td><td>Other Postretirement Plans Benefit Payments</td><td>Medicare Part D Adjustments</td></tr><tr><td>2018</td><td>$ 41.9</td><td>$ 4.2</td><td>$ 0.3</td></tr><tr><td>2019</td><td>42.9</td><td>4.0</td><td>0.3</td></tr><tr><td>2020</td><td>43.5</td><td>3.7</td><td>0.2</td></tr><tr><td>2021</td><td>44.3</td><td>3.4</td><td>0.2</td></tr><tr><td>2022</td><td>45.2</td><td>3.1</td><td>0.2</td></tr><tr><td>2023-2027</td><td>226.6</td><td>12.3</td><td>0.7</td></tr></table>

In 2018, we expect to contribute cash of at least $12.3 million to the pension plans to meet minimum funding requirements. Also in 2018, we anticipate contributing cash of $4.2 million to the postretirement medical benefit plans to fund anticipated benefit payments.

## Plan Assets and Investment Strategies

The Company’s overall investment strategy is to obtain sufficient return and provide adequate liquidity to meet the benefit obligations of our pension plans. Investments are made in public securities to ensure adequate liquidity to support benefit payments. Domestic and international stocks and bonds provide diversification to the portfolio.



For the U.S. plans, we utilize an asset allocation policy that seeks to maintain a fully funded plan status under the Pension Protection Act of 2006. As such, the primary investment objective beyond accumulating sufficient assets to meet future benefit obligations is to monitor and manage the liabilities of the plan to better insulate the portfolio from changes in interest rates that are impacting the liabilities. This requires an interest rate management strategy to reduce the sensitivity in the plan’s funded status and having a portion of the plan’s assets invested in return-seeking strategies. Currently, our policy includes a 75% allocation to fixed income and 25% to return-seeking strategies. Actual allocations may experience temporary fluctuations based on market movements and investment strategies.

For the Canadian pension plan the investment objectives for the pension plans’ assets are as follows: (i) achieve a nominal annualized rate of return equal to or greater than the actuarially assumed investment return over ten to twenty-year periods; (ii) achieve an annualized rate of return of the Consumer Price Index plus 5% over ten to twenty-year periods; (iii) realize annual, three and five-year annualized rates of return consistent with or in excess of specific respective market benchmarks at the individual asset class level; and (iv) achieve an overall return on the pension plans’ assets consistent with or in excess of the total fund benchmark, which is a hybrid benchmark customized to reflect the trusts’ asset allocation and performance objectives. Currently, our policy includes a 40% allocation to fixed income and 60% to return-seeking strategies. Actual allocations may experience temporary fluctuations based on market movements and investment strategies.

A significant amount of the assets are invested in funds that are managed by a group of professional investment managers. These funds are mainly commingled funds. Performance is reviewed by Mosaic management monthly by comparing each fund’s return to a benchmark with an in-depth quarterly review presented by the professional investment managers to the Global Pension Investment Committee. We do not have any significant concentrations of credit risk or industry sectors within the plan assets. Assets may be indirectly invested in Mosaic stock, but any risk related to this investment would be immaterial due to the insignificant percentage of the total pension assets that would be invested in Mosaic stock.

## Fair Value Measurements of Plan Assets

The following tables provide fair value measurement, by asset class, of the Company’s defined benefit plan assets for both the U.S. and Canadian plans:

<table><tr><td rowspan="2">Pension Plan Asset Category</td><td colspan="5">December 31, 2017</td></tr><tr><td>Total</td><td>Level 1</td><td>Level 2</td><td>Level 3</td><td></td></tr><tr><td>Cash</td><td>$ 14.7</td><td>$ 14.7</td><td>$ —</td><td>$ —</td><td></td></tr><tr><td>Equity securities \( ^{(a)} \)</td><td>327.7</td><td>—</td><td>327.7</td><td>—</td><td></td></tr><tr><td>Fixed income \( ^{(b)} \)</td><td>447.8</td><td>—</td><td>447.8</td><td>—</td><td></td></tr><tr><td>Private equity funds</td><td>3.0</td><td>—</td><td>—</td><td>3.0</td><td></td></tr><tr><td>Total assets at fair value</td><td>$ 793.2</td><td>$ 14.7</td><td>$ 775.5</td><td>$ 3.0</td><td></td></tr></table>

<table><tr><td rowspan="2">Pension Plan Asset Category</td><td colspan="5">December 31, 2016</td></tr><tr><td>Total</td><td>Level 1</td><td>Level 2</td><td>Level 3</td><td></td></tr><tr><td>Cash</td><td>$ 10.7</td><td>$ 10.7</td><td>$ —</td><td>$ —</td><td></td></tr><tr><td>Equity securities \( ^{(a)} \)</td><td>257.3</td><td>—</td><td>257.3</td><td>—</td><td></td></tr><tr><td>Fixed income \( ^{(b)} \)</td><td>443.5</td><td>—</td><td>443.5</td><td>—</td><td></td></tr><tr><td>Private equity funds</td><td>4.1</td><td>—</td><td>—</td><td>4.1</td><td></td></tr><tr><td>Total assets at fair value</td><td>$ 715.6</td><td>$ 10.7</td><td>$ 700.8</td><td>$ 4.1</td><td></td></tr></table>



## Rates and Assumptions

The approach used to develop the discount rate for the pension and postretirement plans is commonly referred to as the yield curve approach. Under this approach, we use a hypothetical curve formed by the average yields of available corporate bonds rated AA and above and match it against the projected benefit payment stream. Each category of cash flow of the projected benefit payment stream is discounted back using the respective interest rate on the yield curve. Using the present value of projected benefit payments, a weighted-average discount rate is derived.

The approach used to develop the expected long-term rate of return on plan assets combines an analysis of historical performance, the drivers of investment performance by asset class, and current economic fundamentals. For returns, we utilized a building block approach starting with inflation expectations and added an expected real return to arrive at a long-term nominal expected return for each asset class. Long-term expected real returns are derived from future expectations of the U.S. Treasury real yield curve.

Weighted average assumptions used to determine benefit obligations were as follows:

<table><tr><td rowspan="3"></td><td colspan="3">Pension Plans</td></tr><tr><td colspan="3">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Discount rate</td><td>3.51%</td><td>3.97%</td><td>4.17%</td></tr><tr><td>Expected return on plan assets</td><td>5.54%</td><td>5.54%</td><td>5.66%</td></tr><tr><td>Rate of compensation increase</td><td>3.50%</td><td>3.50%</td><td>3.50%</td></tr></table>

Weighted-average assumptions used to determine net benefit cost were as follows:

<table><tr><td rowspan="3"></td><td colspan="3">Pension Plans</td></tr><tr><td colspan="3">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Discount rate</td><td>3.97%</td><td>4.17%</td><td>3.95%</td></tr><tr><td>Service cost discount rate (a)</td><td>4.02%</td><td>4.19%</td><td>n/a</td></tr><tr><td>Interest cost discount rate (a)</td><td>3.44%</td><td>3.45%</td><td>n/a</td></tr><tr><td>Expected return on plan assets</td><td>5.54%</td><td>5.66%</td><td>6.15%</td></tr><tr><td>Rate of compensation increase</td><td>3.50%</td><td>3.50%</td><td>3.50%</td></tr></table>

(a) In 2016, we changed the method used to estimate the service and interest cost components of net periodic benefit cost for our defined benefit pension and other postretirement benefit plans by electing a full yield curve approach and applying the specific spot rates along the yield curve used in the determination of the benefit obligation to the relevant projected cash flows. The impact of this change to our earnings and earnings per share was not material.

## Defined Contribution Plans

Eligible salaried and nonunion hourly employees in the U.S. participate in a defined contribution investment plan which permits employees to defer a portion of their compensation through payroll deductions and provides matching contributions. We match 100% of the first 3% of the participant’s contributed pay plus 50% of the next 3% of the participant’s contributed pay, subject to Internal Revenue Service limits. Participant contributions, matching contributions, and the related earnings immediately vest. Mosaic also provides an annual non-elective employer contribution feature for eligible salaried and non-union hourly employees based on the employee’s age and eligible pay. Participants are generally vested in the non-elective employer contributions after three years of service. In addition, a discretionary feature of the plan allows the Company to make additional contributions to employees. Certain union employees participate in a defined contribution retirement plan based on collective bargaining agreements.



Canadian salaried and non-union hourly employees participate in an employer funded plan with employer contributions similar to the U.S. plan. The plan provides a profit sharing component which is paid each year. We also sponsor one mandatory union plan in Canada. Benefits in these plans vest after two years of consecutive service.

The expense attributable to defined contribution plans in the U.S. and Canada was $54.3 million, $51.1 million and $55.1 million for 2017, 2016 and 2015, respectively.

## 18. CARGILL TRANSACTION AND OTHER SHARE REPURCHASES

## Cargill Transaction

In May 2011, Cargill divested its interest in us in a split-off (the “Split-off”) to its stockholders (the “Exchanging Cargill Stockholders”), including two trusts that we refer to as the “MAC Trusts”, and a debt exchange (the “Debt Exchange”) with certain Cargill debt holders (the “Exchanging Cargill Debt Holders”). The agreements relating to what we refer to as the “Cargill Transaction” contemplated an orderly distribution of the approximately 64% (285.8 million) of our shares that Cargill formerly held. Following the Split-off and Debt Exchange, the MAC Trusts and Exchanging Cargill Debt Holders sold an aggregate of 157.0 million of these shares in underwritten public secondary offerings or to us, completing the disposition of shares designated to be sold during the 15-month period following the Split-off.

All other shares of our stock (approximately 128.8 million shares of our Class A Common Stock (“Class A Shares”) in the aggregate) received by the Exchanging Cargill Stockholders were subsequently repurchased by us or converted to regular shares of our Common Stock. Following these repurchases and conversions, there are no Class A Shares outstanding and none are authorized under our Restated Certificate of Incorporation.

## Other Share Repurchases

In February of 2014, our Board of Directors authorized a $1.0 billion share repurchase program (the “2014 Repurchase Program”), allowing the Company to repurchase Class A Shares or shares of our Common Stock, through direct buybacks or in open market transactions. During 2014 under the 2014 Repurchase Program, 8,193,698 Class A Shares were repurchased under the agreements we entered into with certain Cargill family member trusts and 7,585,085 shares of Common Stock were repurchased on the open market for an aggregate of $727.3 million. During 2015 under this program, 2,560,277 shares of Common Stock were repurchased on the open market for an aggregate of $123.3 million.

In May 2015, our Board of Directors authorized a new $1.5 billion share repurchase program (the “2015 Repurchase Program”), allowing Mosaic to repurchase shares of our Common Stock through open market purchases, accelerated share repurchase arrangements, privately negotiated transactions or otherwise. The 2015 Repurchase Program has no set expiration date. In connection with this authorization, the remaining amount of $149.4 million authorized under the 2014 Repurchase Program was terminated.

During 2015, we repurchased 1,891,620 shares of Common Stock in the open market under the 2015 Repurchase Program for an aggregate of approximately $75.0 million. In May 2015 and February of 2016, also under the 2015 Repurchase Program, we entered into separate accelerated share repurchase transactions (“ASRs”) with financial institutions to repurchase shares of our Common Stock for up-front payments of $500 million and $75 million, respectively. For each ASR, the total number of shares delivered, and therefore the average price paid per share, were determined at the end of the ASR’s purchase period based on the volume-weighted average price of our Common Stock during that period, less an agreed discount. The shares received were retired in the period they were delivered, and each up-front payment is accounted for as a reduction to shareholders’ equity in our Condensed Consolidated Balance Sheet in the period the payment was made. Neither ASR was dilutive to our earnings per share calculation from its execution date through its settlement date. The unsettled portion of each ASR during that period met the criteria to be accounted for as a forward contract indexed to our Common Stock and qualified as an equity transaction.



Additional information relating to each ASR is shown below:

<table><tr><td></td><td>Settlement Date</td><td>Shares Delivered</td><td>Average Price Per Share</td><td>ASR Amount</td></tr><tr><td>May 2015 ASR</td><td>July 28, 2015</td><td>11,106,847</td><td>$45.02</td><td>$500.0 million</td></tr><tr><td>February 2016 ASR</td><td>March 29, 2016</td><td>2,766,558</td><td>$27.11</td><td>$75.0 million</td></tr></table>

As of December 31, 2017, 15,765,025 shares of Common Stock have been repurchased under the 2015 Repurchase Program for an aggregate total of approximately $650 million, bringing the remaining amount that could be repurchased under this program to $850 million.

The extent to which we repurchase our shares and the timing of any such repurchases depend on a number of factors, including market and business conditions, the price of our shares, and corporate, regulatory and other considerations.

## 19. SHARE-BASED PAYMENTS

The Mosaic Company 2014 Stock and Incentive Plan (the “2014 Stock and Incentive Plan”) was approved by our shareholders and became effective on May 15, 2014, and permits up to 25 million shares of common stock to be issued under share-based awards granted under the plan. The 2014 Stock and Incentive Plan provides for grants of stock options, restricted stock, restricted stock units, performance units and a variety of other share-based and non-share-based awards. Our employees, officers, directors, consultants, agents, advisors, and independent contractors, as well as other designated individuals, are eligible to participate in the 2014 Stock and Incentive Plan.

The Mosaic Company 2004 Omnibus Stock and Incentive Plan (the “Omnibus Plan”), which was approved by our shareholders and became effective in 2004 and subsequently amended, provided for the grant of shares and share options to employees for up to 25 million shares of common stock. While awards may no longer be made under the Omnibus Plan, it will remain in effect with respect to the awards that had been granted thereunder prior to its termination.

Mosaic settles stock option exercises, restricted stock units, and certain performance units and performance shares with newly issued common shares. The Compensation Committee of the Board of Directors administers the 2014 Stock and Incentive Plan and the Omnibus Plan subject to their respective provisions and applicable law.

## Stock Options

Stock options are granted with an exercise price equal to the market price of our stock at the date of grant and have a ten-year contractual term. The fair value of each option award is estimated on the date of the grant using the Black-Scholes option valuation model. Stock options vest in equal annual installments in the first three years following the date of grant (graded vesting). Stock options are expensed on a straight-line basis over the required service period, based on the estimated fair value of the award on the date of grant, net of estimated forfeitures.

## Valuation Assumptions

Assumptions used to calculate the fair value of stock options in each period are noted in the following table. Expected volatility is based on the simple average of implied and historical volatility using the daily closing prices of the Company’s stock for a period equal to the expected term of the option. The risk-free interest rate is based on the U.S. Treasury rate at the time of the grant for instruments of comparable life.

Years Ended December 31,

<table><tr><td></td><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Weighted average assumptions used in option valuations:</td><td></td><td></td><td></td></tr><tr><td>Expected volatility</td><td>35.35%</td><td>42.54%</td><td>39.90%</td></tr><tr><td>Expected dividend yield</td><td>1.97%</td><td>3.86%</td><td>1.98%</td></tr><tr><td>Expected term (in years)</td><td>7</td><td>7</td><td>7</td></tr><tr><td>Risk-free interest rate</td><td>2.34%</td><td>1.65%</td><td>1.92%</td></tr></table>



A summary of the status of our stock options as of December 31, 2017, and activity during 2017, is as follows:

<table><tr><td></td><td>Shares (in millions)</td><td>Weighted Average Exercise Price</td><td>Weighted Average Remaining Contractual Term (Years)</td><td>Aggregate Intrinsic Value</td></tr><tr><td>Outstanding as of December 31, 2016</td><td>2.6</td><td>$ 51.11</td><td></td><td></td></tr><tr><td>Granted</td><td>0.4</td><td>30.42</td><td></td><td></td></tr><tr><td>Cancelled</td><td>(0.4)</td><td>$ 43.99</td><td></td><td></td></tr><tr><td>Outstanding as of December 31, 2017</td><td>2.6</td><td>$ 49.20</td><td>4.9</td><td>$ —</td></tr><tr><td>Exercisable as of December 31, 2017</td><td>1.8</td><td>$ 56.34</td><td>3.6</td><td>$ —</td></tr></table>

The weighted-average grant date fair value of options granted during 2017, 2016 and 2015 was $9.91, $8.37 and $17.87, respectively. There were no options exercised during 2017. The total intrinsic value of options exercised during 2016 and 2015 was $2.8 million and $7.3 million, respectively.

## Restricted Stock Units

Restricted stock units are issued to various employees, officers and directors at a price equal to the market price of our stock at the date of grant. The fair value of restricted stock units is equal to the market price of our stock at the date of grant. Restricted stock units generally cliff vest after three years of continuous service and are expensed on a straight-line basis over the required service period, based on the estimated grant date fair value, net of estimated forfeitures.

A summary of the status of our restricted stock units as of December 31, 2017, and activity during 2017, is as follows:

<table><tr><td></td><td>Shares (in millions)</td><td>Weighted Average Grant Date Fair Value Per Share</td></tr><tr><td>Restricted stock units as of December 31, 2016</td><td>1.1</td><td>40.38</td></tr><tr><td>Granted</td><td>0.5</td><td>28.93</td></tr><tr><td>Issued and cancelled</td><td>(0.4)</td><td>47.64</td></tr><tr><td>Restricted stock units as of December 31, 2017</td><td>1.2</td><td>33.10</td></tr></table>

## Performance Units

During the year ended December 31, 2017, 455,740 total shareholder return (“TSR”) performance units were granted with a fair value of $28.02. Final performance units are awarded based on the increase or decrease, subject to certain limitations, in Mosaic’s share price from the grant date to the third anniversary of the award, plus dividends (a measure of total shareholder return or TSR). The beginning and ending stock prices are based on a 30 trading-day average stock price. Holders of the awards must be employed at the end of the performance period in order for any units to vest, except in the event of death, disability or retirement at or after age 60, certain changes in control, and Committee or Board discretion as provided in the related award agreements.

The fair value of each TSR performance unit is determined using a Monte Carlo simulation. This valuation methodology utilizes assumptions consistent with those of our other share-based awards and a range of ending stock prices; however, the expected term of the awards is three years, which impacts the assumptions used to calculate the fair value of performance units as shown in the table below. TSR performance units are considered equity-classified fixed awards measured at grant-date fair value and not subsequently re-measured. TSR performance units cliff vest after three years of continuous service and are expensed on a straight-line basis over the required service period, based on the estimated grant date fair value of the award net of estimated forfeitures.



A summary of the assumptions used to estimate the fair value of TSR performance units is as follows:

<table><tr><td rowspan="2"></td><td colspan="3">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Weighted average assumptions used in performance unit valuations:</td><td></td><td></td><td></td></tr><tr><td>Expected volatility</td><td>34.26%</td><td>35.67%</td><td>24.86%</td></tr><tr><td>Expected dividend yield</td><td>1.97%</td><td>3.86%</td><td>1.98%</td></tr><tr><td>Expected term (in years)</td><td>3</td><td>3</td><td>3</td></tr><tr><td>Risk-free interest rate</td><td>1.60%</td><td>0.99%</td><td>1.05%</td></tr></table>

During the year ended December 31, 2016, approximately 329,599 performance units were granted with vesting based on the cumulative spread between our return on invested capital (ROIC) and our weighted-average cost of capital (WACC) measured over a three-year period. These units are accounted for as share-based payments but are settled in cash, and are therefore accounted for as a liability with changes in value recorded through earnings during the three year service period. Awards are forfeited upon termination of employment, but not for retirement (if the employee has at least five years of service at age 60 or older), death, or disability of the employee. The total grant-date fair value of these awards was equal to the market price of our stock at the date of grant, which was $28.49.

A summary of our performance unit activity during 2017 is as follows:

<table><tr><td></td><td>Shares (in millions)</td><td>Weighted Average Grant Date Fair Value Per Share</td></tr><tr><td>Outstanding as of December 31, 2016</td><td>0.8</td><td>$ 41.36</td></tr><tr><td>Granted</td><td>0.5</td><td>28.02</td></tr><tr><td>Issued and cancelled</td><td>(0.2)</td><td>$ 57.20</td></tr><tr><td>Outstanding as of December 31, 2017</td><td>1.1</td><td>$ 33.26</td></tr></table>

## Performance Based Cost Reduction Incentive Awards

During the year ended December 31, 2014, approximately 627,054 units of one-time, long-term incentive awards were issued to executive officers and other management employees tied to achieving target controllable operating costs savings of $228 million from 2013 levels by the end of 2016 (“measurement period”). The total grant-date fair value of these awards was equal to the market price of our stock at the date of grant, which was $49.17. During 2017, the awards were settled through the issuance of 934,346 shares of Mosaic common stock which was 150% of target, based on operating cost savings achieved during the measurement period. The market price of our stock was $31.42 at the date of issuance.

## Share-Based Compensation Expense

We recorded share-based compensation expense of $28.0 million, $30.5 million and $41.8 million for 2017, 2016 and 2015, respectively. The tax benefit related to share exercises and lapses in the year was $9.7 million, $10.7 million and $13.8 million for 2017, 2016 and 2015, respectively.

As of December 31, 2017, there was $15.4 million of total unrecognized compensation cost related to options, restricted stock units and performance units and shares granted under the 2014 Stock and Incentive Plan and the Omnibus Plan. The unrecognized compensation cost is expected to be recognized over a weighted-average period of 1 year. The total fair value of options vested in 2017, 2016 and 2015 was $4.2 million, $4.5 million and $4.4 million, respectively.

There was no cash received from exercises of share-based payment arrangements for 2017. Cash received for 2016 and 2015 was $3.8 million and $5.3 million, respectively. In 2017, 2016 and 2015, we received a tax benefit for tax deductions from options of $14.0 million, $3.3 million and $8.9 million, respectively.



## 20. COMMITMENTS

We lease certain plants, warehouses, terminals, office facilities, railcars and various types of equipment under operating leases, some of which include rent payment escalation clauses, with lease terms ranging from one to ten years. In addition to minimum lease payments, some of our office facility leases require payment of our proportionate share of real estate taxes and building operating expenses.

We have long-term agreements for the purchase of raw materials, including a commercial offtake agreement with the Miski Mayo Mine for phosphate rock.

In 2013, we entered into an ammonia supply agreement with CF (the “CF Ammonia Supply Agreement”) that commenced in 2017, under which Mosaic agreed to purchase approximately 545,000 to 725,000 tonnes of ammonia per year during a term that may extend until December 31, 2032, at a price tied to the prevailing price of U.S. natural gas.

In addition, we have long-term agreements for the purchase of sulfur, which is used in the production of phosphoric acid, and natural gas, which is a significant raw material, used primarily in the solution mining process in our Potash segment and used in our phosphate concentrates plants. Also, we have agreements for capital expenditures primarily in our Potash segments related to our expansion projects.

A schedule of future minimum long-term purchase commitments, based on expected market prices as of December 31, 2017, and minimum lease payments under non-cancelable operating leases as of December 31, 2017, is as follows:

<table><tr><td></td><td>(in millions)</td><td>Purchase Commitments</td><td>Operating Leases</td></tr><tr><td>2018</td><td></td><td>2,417.7</td><td>76.6</td></tr><tr><td>2019</td><td></td><td>677.7</td><td>58.3</td></tr><tr><td>2020</td><td></td><td>517.3</td><td>46.3</td></tr><tr><td>2021</td><td></td><td>494.7</td><td>40.9</td></tr><tr><td>2022</td><td></td><td>442.9</td><td>36.9</td></tr><tr><td>Subsequent years</td><td></td><td>2,659.4</td><td>51.1</td></tr><tr><td></td><td></td><td>7,209.7</td><td>310.1</td></tr></table>

Rental expense for 2017, 2016 and 2015 was $114.0 million, $111.0 million and $104.1 million, respectively. Purchases made under long-term commitments in 2017, 2016 and 2015 were $1.9 billion, $1.6 billion and $2.5 billion, respectively.

Most of our export sales of potash crop nutrients are marketed through a North American export association, Canpotex, which may fund its operations in part through third-party financing facilities. As a member, Mosaic or our subsidiaries are contractually obligated to reimburse Canpotex for their pro rata share of any operating expenses or other liabilities incurred. The reimbursements are made through reductions to members' cash receipts from Canpotex.

We incur liabilities for reclamation activities and Gypstack closures in our Florida and Louisiana operations where, in order to obtain necessary permits, we must either pass a test of financial strength or provide credit support, typically in the form of cash deposits, surety bonds or letters of credit. The surety bonds generally expire within one year or less but a substantial portion of these instruments provide financial assurance for continuing obligations and, therefore, in most cases, must be renewed on an annual basis. As of December 31, 2017, we had $476.0 million in surety bonds outstanding, of which $186.4 million is for reclamation obligations, primarily related to mining in Florida. In addition, included in this amount is $245.6 million, reflecting our updated closure cost estimates, delivered to EPA as a substitute for the financial assurance provided through the Plant City Trust. The remaining balance in surety bonds outstanding of $44.0 million is for other matters.

## 21. CONTINGENCIES

We have described below judicial and administrative proceedings to which we are subject.



## Environmental Matters

We have contingent environmental liabilities that arise principally from three sources: (i) facilities currently or formerly owned by our subsidiaries or their predecessors; (ii) facilities adjacent to currently or formerly owned facilities; and (iii) third-party Superfund or state equivalent sites. At facilities currently or formerly owned by our subsidiaries or their predecessors, the historical use and handling of regulated chemical substances, crop and animal nutrients and additives and by-product or process tailings have resulted in soil, surface water and/or groundwater contamination. Spills or other releases of regulated substances, subsidence from mining operations and other incidents arising out of operations, including accidents, have occurred previously at these facilities, and potentially could occur in the future, possibly requiring us to undertake or fund cleanup or result in monetary damage awards, fines, penalties, other liabilities, injunctions or other court or administrative rulings. In some instances, pursuant to consent orders or agreements with governmental agencies, we are undertaking certain remedial actions or investigations to determine whether remedial action may be required to address contamination. At other locations, we have entered into consent orders or agreements with appropriate governmental agencies to perform required remedial activities that will address identified site conditions. Taking into consideration established accruals of approximately $35.1 million and $79.6 million, as of December 31, 2017 and 2016, respectively, expenditures for these known conditions currently are not expected, individually or in the aggregate, to have a material effect on our business or financial condition. However, material expenditures could be required in the future to remediate the contamination at known sites or at other current or former sites or as a result of other environmental, health and safety matters. Below is a discussion of the more significant environmental matters.

New Wales Water Loss Incident. In August 2016, a sinkhole developed under one of the two cells of the active phosphogypsum stack at our New Wales facility in Polk County, Florida, resulting in process water from the stack draining into the sinkhole. The incident was reported to the FDEP and EPA and in October 2016 our subsidiary, Mosaic Fertilizer, entered into a consent order (the “Order”) with the FDEP relating to the incident under which Mosaic Fertilizer agreed to, among other things: implement a remediation plan to close the sinkhole; perform additional monitoring of the groundwater quality and act to assess and remediate in the event monitored off-site water does not comply with applicable standards as a result of the incident; evaluate the risk of potential future sinkhole formation at the New Wales facility and at Mosaic Fertilizer’s active Gypstack operations at the Bartow, Riverview and Plant City facilities with recommendations to address any identified issues; and provide financial assurance of no less than $40.0 million, which we have done without the need for any expenditure of corporate funds through satisfaction of a financial strength test and Mosaic parent guarantee. The Order did not require payment of civil penalties relating to the incident.

In 2016, we recorded expenses and related accruals of approximately $70.0 million, reflecting our estimated costs related to the sinkhole. At June 30, 2017, we accrued an additional $14.0 million, in part due to refinements in our estimates as repairs progressed and because we determined that a portion of the sinkhole was wider than previously estimated. As of December 31, 2017, we had incurred approximately $62.0 million in remediation and sinkhole-related costs and we estimate that the remaining cost to complete and implement the remediation plan and comply with our responsibilities under the Order as described above will be approximately $22.0 million. There are, however, uncertainties in estimating these costs. Additional expenditures could be required in the future for additional remediation or other measures in connection with the sinkhole including if, for example, FDEP or EPA were to request additional measures to address risks presented by the Gypstack, and these expenditures could be material. In addition, we are unable to predict at this time what, if any, impact the New Wales water loss incident will have on future Florida permitting efforts.

EPA RCRA Initiative. Our obligations under the 2015 Consent Decrees, the consent decree relating to our Plant City Facility and our financial assurance obligations relating to the Bonnie Facility Trust are discussed in Note 13 of our Notes to Consolidated Financial Statements.

EPA EPCRA Initiative. In July 2008, DOJ sent a letter to major U.S. phosphoric acid manufacturers, including us, stating that EPA’s ongoing investigation indicates apparent violations of Section 313 of the Emergency Planning and Community Right-to-Know Act (“EPCRA”) at their phosphoric acid manufacturing facilities. Section 313 of EPCRA requires annual reports to be submitted with respect to the use or presence of certain toxic chemicals. DOJ and EPA also stated that they believe that a number of these facilities have violated Section 304 of EPCRA and Section 103 of the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”) by failing to provide required notifications relating to the release of hydrogen fluoride from the facilities. The letter did not identify any specific violations by us or assert a demand for penalties against us. We cannot predict at this time whether EPA and DOJ will initiate an enforcement action over this matter, what its scope would be, or what the range of outcomes of such a potential enforcement action might be.



Florida Sulfuric Acid Plants. On April 8, 2010, EPA Region 4 submitted an administrative subpoena to us under Section 114 of the Federal Clean Air Act (the “CAA”) regarding compliance of our Florida sulfuric acid plants with the “New Source Review” requirements of the CAA. The request received by Mosaic appears to be part of a broader EPA national enforcement initiative focusing on sulfuric acid plants. On June 16, 2010, EPA issued an NOV to CF (the “CF NOV”) with respect to “New Source Review” compliance at the Plant City Facility’s sulfuric acid plants and the allegations in that NOV were not resolved before our 2014 acquisition of the Plant City Facility. CF has agreed to indemnify us with respect to any penalty EPA may assess as a result of the allegations in that NOV. We are negotiating the terms of a settlement with EPA that would resolve both the violations alleged in the CF NOV, and violations which EPA may contend, but have not asserted, exist at the sulfuric acid plants at our other facilities in Florida. Based on the current status of the negotiations, we expect that our commitments will include an agreement to reduce our sulfur dioxide emissions over the next two to five years to comply with a sulfur dioxide ambient air quality standard enacted by EPA in 2010. In the event we are unable to finalize agreement on the terms of the settlement, we cannot predict at this time whether EPA and DOJ will initiate an enforcement action with respect to “New Source Review” compliance at our Florida sulfuric acid plants other than the Plant City Facility or what its scope would be, or what the range of outcomes might be with respect to such a potential enforcement action or with respect to the CF NOV.

Other Environmental Matters. Superfund and equivalent state statutes impose liability without regard to fault or to the legality of a party’s conduct on certain categories of persons who are considered to have contributed to the release of “hazardous substances” into the environment. Under Superfund, or its various state analogues, one party may, under certain circumstances, be required to bear more than its proportionate share of cleanup costs at a site where it has liability if payments cannot be obtained from other responsible parties. Currently, certain of our subsidiaries are involved or concluding involvement at several Superfund or equivalent state sites. Our remedial liability from these sites, alone or in the aggregate, currently is not expected to have a material effect on our business or financial condition. As more information is obtained regarding these sites and the potentially responsible parties involved, this expectation could change.

We believe that, pursuant to several indemnification agreements, our subsidiaries are entitled to at least partial, and in many instances complete, indemnification for the costs that may be expended by us or our subsidiaries to remedy environmental issues at certain facilities. These agreements address issues that resulted from activities occurring prior to our acquisition of facilities or businesses from parties including, but not limited to, ARCO (BP); Beatrice Fund for Environmental Liabilities; Conoco; Conserv; Estech, Inc.; Kaiser Aluminum & Chemical Corporation; Kerr-McGee Inc.; PPG Industries, Inc.; The Williams Companies; CF; and certain other private parties. Our subsidiaries have already received and anticipate receiving amounts pursuant to the indemnification agreements for certain of their expenses incurred to date as well as future anticipated expenditures. We record potential indemnifications as an offset to the established accruals when they are realizable or realized.

## Phosphate Mine Permitting in Florida

Denial of the permits sought at any of our mines, issuance of the permits with cost-prohibitive conditions, or substantial delays in issuing the permits, legal actions that prevent us from relying on permits or revocation of permits may create challenges for us to mine the phosphate rock required to operate our Florida and Louisiana phosphate plants at desired levels or increase our costs in the future.

The South Pasture Extension. In November 2016 the Army Corps of Engineers (the “Corps”) issued a federal wetlands permit under the Clean Water Act for mining an extension of our South Pasture phosphate rock mine in central Florida. On December 20, 2016, the Center for Biological Diversity, ManaSota-88, People for Protecting Peace River and Suncoast Waterkeeper issued a 60-day notice of intent to sue the Corps and the U.S. Fish and Wildlife Service (the “Service”) under the federal Endangered Species Act regarding actions taken by the Corps and Service in connection with the issuance of the permit. On March 15, 2017, the same group filed a complaint against the Corps, the Service and the U.S. Department of the Interior in the U.S. District Court for the Middle District of Florida, Tampa Division (the “Tampa District Court”). The complaint alleges that various actions taken by the Corps and the Service in connection with the issuance of the permit, including in connection with the Service’s biological opinion and the Corps’ reliance on that biological opinion, violated substantive and procedural requirements of the federal Clean Water Act (“CWA”), the National Environmental Policy Act (“NEPA”) and the Endangered Species Act (the “ESA”), and were arbitrary, capricious, an abuse of discretion, and otherwise not in accordance with law, in violation of the Administrative Procedure Act (the “APA”). As to the Corps, plaintiffs allege in their complaint, among other things, that the Corps failed to conduct an adequate analysis under the CWA of alternatives, failed to fully consider the effects of the South Pasture extension mine, failed to take adequate steps to minimize potential



adverse impacts and violated the ESA by relying on the Service’s biological opinion to determine that its permitting decision is not likely to adversely affect certain endangered or rare species. As to the Service, plaintiffs allege in their complaint, among other things, that the Service’s biological opinion fails to meet statutory requirements, that the Service failed to properly consider impacts and adequately assess the cumulative effects on certain species, and that the Service violated the ESA in finding that the South Pasture extension mine is not likely to adversely affect certain endangered or rare species. The plaintiffs are seeking relief including (i) declarations that the Corps’ decision to issue the permit violated the CWA, NEPA, the ESA and the APA and that its NEPA review violated the law; (ii) declarations that the Service’s biological opinion violated applicable law and that the Corps’ reliance on the biological opinion violated the ESA; (iii) orders that the Corps rescind the permit, that the Service withdraw its biological opinion and related analyses and prepare a biological opinion that complies with the ESA; and (iv) that the Corps be preliminarily and permanently enjoined from authorizing any further action under the permit until it complies fully with the requirements of the CWA, NEPA, the ESA and the APA. On March 31, 2017, Mosaic’s motion for intervention was granted with no restrictions. Plaintiffs filed an amended complaint on June 2, 2017, without any new substantive allegations, and on June 28, 2017, Mosaic (as intervenor) and separately, the defendants, filed answers to the amended complaint. On June 30, 2017, the plaintiffs filed a motion for summary judgment, arguing that the permit should not have been issued. On July 15, 2017, Mosaic filed a response in opposition to the plaintiffs’ motion, and on July 28, 2017, Mosaic filed its own motion for summary judgment. On December 14, 2017, the Tampa District Court granted Mosaic’s motion for summary judgment in favor of Mosaic and the government defendants, and denied the plaintiffs’ motion to supplement the administrative record. On February 12, 2018, the plaintiffs filed an appeal with the U.S. Court of Appeals for the Eleventh Circuit of the Tampa District Court decision.

We believe the plaintiffs’ claims in this case are without merit and we intend to vigorously defend the Corps’ issuance of the South Pasture extension permit and the Service’s biological opinion. However, if the plaintiffs were to prevail in this case, we would be prohibited from continuing to mine the South Pasture extension, and obtaining new or modified permits could significantly delay our resumption of mining and could result in more onerous mining conditions. This could have a material effect on our future results of operations, reduce future cash flows from operations, and in the longer term, conceivably adversely affect our liquidity and capital resources.

## MicroEssentials \( ^{®} \)  Patent Lawsuit

On January 9, 2009, John Sanders and Specialty Fertilizer Products, LLC filed a complaint against Mosaic, Mosaic Fertilizer, Cargill, Incorporated and Cargill Fertilizer, Inc. in the United States District Court for the Western District of Missouri (the "Missouri District Court"). The complaint alleges that our production of MicroEssentials \( ^{®} \)  SZ, one of several types of the MicroEssentials \( ^{®} \)  value-added ammoniated phosphate crop nutrient products that we produce, infringes on a patent held by the plaintiffs since 2001 and which would expire in 2018. Plaintiffs have since asserted that other MicroEssentials \( ^{®} \)  products also infringe the patent. Plaintiffs seek to enjoin the alleged infringement and to recover an unspecified amount of damages and attorneys’ fees for past infringement. Our answer to the complaint responds that the plaintiffs’ patent is not infringed, is invalid and is unenforceable because the plaintiffs engaged in inequitable conduct during the prosecution of the patent.

Through an order entered by the court on September 25, 2014, Cargill was dismissed as a defendant, and the two original plaintiffs were replaced by a single plaintiff, JLSMN LLC, an entity to whom the patents were transferred.

The Missouri District Court stayed the lawsuit pending an ex parte reexamination of plaintiff’s current patent claims by the U.S. Patent and Trademark Office (the “PTO”). That ex parte reexamination has now ended. On September 12, 2012, however, Shell Oil Company (“Shell”) filed an additional reexamination request which in part asserted that the claims as amended and added in connection with the ex parte reexamination are unpatentable. On October 4, 2012, the PTO issued an Ex Parte Reexamination Certificate in which certain claims of the plaintiff’s patent were cancelled, disclaimed and amended, and new claims were added. Following the PTO’s grant of Shell’s request for an inter parties reexamination, on December 11, 2012, the PTO issued an initial rejection of all of plaintiff’s remaining patent claims. On September 12, 2013, the PTO reversed its initial rejection of the plaintiff’s remaining patent claims and allowed them to stand. Shell appealed the PTO’s decision, and on June 7, 2016, the Patent Trial and Appeal Board, the highest appellate authority within the PTO, issued a final decision holding that all claims initially allowed to the plaintiff by the PTO examiner should instead have been found invalid. On July 18, 2016, plaintiff appealed the Patent Trial and Appeal Board’s decision to the United States Court of Appeals for the Federal Circuit and on November 8, 2017, the Federal Circuit Court of Appeals affirmed the Patent Trial and Appeal Board’s decision, resulting in no remaining claims against us. Plaintiff has stated that it plans to file a petition for a writ of certiorari with the United States Supreme Court following that decision. The stay in the Missouri District Court litigation is expected to remain in place during the appellate proceedings.



We believe that the plaintiff’s allegations are without merit and intend to defend vigorously against them. At this stage of the proceedings, we cannot predict the outcome of this litigation, estimate the potential amount or range of loss or determine whether it will have a material effect on our results of operations, liquidity or capital resources.

## Brazil Tax Contingencies

Our Brazilian subsidiary is engaged in a number of judicial and administrative proceedings, including audits, relating to various non-income tax matters. We estimate that our maximum potential liability with respect to these matters is approximately $138.0 million. Approximately $109.0 million of the maximum potential liability relates to credits of PIS and Cofins, which is a Brazilian federal value added tax for the period from 2004 to 2016; while the majority of the remaining amount relates to various other non-income tax cases such as value-added taxes. The maximum potential liability can increase with new audits. Based on Brazil legislation and the current status of similar tax cases involving unrelated taxpayers, we believe we have recorded adequate accruals, which are immaterial, for the probable liability with respect to these Brazilian judicial and administrative proceedings. If status of similar tax cases involving unrelated taxpayer changes in the future, additional accruals could be required.

## Other Claims

We also have certain other contingent liabilities with respect to judicial, administrative and arbitration proceedings and claims of third parties, including tax matters, arising in the ordinary course of business. We do not believe that any of these contingent liabilities will have a material adverse impact on our business or financial condition, results of operations, and cash flows.

## 22. RELATED PARTY TRANSACTIONS

We enter into transactions and agreements with certain of our non-consolidated companies from time to time. As of December 31, 2017 and 2016, the net amount due to our non-consolidated companies totaled $45.4 million and $21.7 million, respectively.

The Consolidated Statements of Earnings included the following transactions with our non-consolidated companies:

<table><tr><td rowspan="2">(in millions)</td><td colspan="4">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td></td></tr><tr><td>Transactions with non-consolidated companies included in net sales</td><td>$     715.3</td><td>$     623.1</td><td>$     1,065.5</td><td></td></tr><tr><td>Transactions with non-consolidated companies included in cost of goods sold</td><td>750.2</td><td>552.9</td><td>805.9</td><td></td></tr></table>

We enter into transactions and agreements with certain of our consolidated companies from time to time. In November 2015 we agreed to provide funds to finance the purchase and construction of two articulated tug and barge units, intended to transport anhydrous ammonia for our operations, through a bridge loan agreement with Gulf Marine Solutions, LLC (“GMS”). GMS is a wholly owned subsidiary of Gulf Sulphur Services Ltd., LLLP (“Gulf Sulphur Services”), an entity in which we and a joint venture partner, Savage Companies (“Savage”) each indirectly own a 50% equity interest and for which a subsidiary of Savage provides operating and management services. A separate Savage subsidiary entered into agreements for the construction, utilizing funds borrowed from GMS. GMS provided these funds through draws on the Mosaic bridge loan, and through additional loans from Gulf Sulphur Services in the aggregate amount of $53.7 million. We determined beginning in 2015 that we are the primary beneficiary of GMS, a variable interest entity, and at that time we consolidated GMS’s balance sheet and statement of earnings within our consolidated financial statements in our Phosphates segment. For that reason, prior to their repayment in full in 2017, the outstanding Gulf Sulphur Services loans were included in long-term debt in our Consolidated Balance Sheets.

During 2016, construction of the second barge was cancelled at our instruction and as a result, we recognized a charge of $43.5 million that was included in other operating expense for the year ended December 31, 2016. Construction of the first barge and the two tugs continued as planned, and the first unit was delivered in 2017. On October 24, 2017, a lease financing transaction was completed with respect to that completed unit, and following the application of proceeds from the transaction, all outstanding loans made by Gulf Sulphur Services to GMS, together with accrued interest, were repaid, and the



bridge loans related to the first unit’s construction were repaid. At December 31, 2017, $73.2 million in bridge loans, which are eliminated in consolidation, were outstanding, relating to the cancelled barge and the remaining tug. Additional reserves against the bridge loan of approximately $10.7 million were recorded during 2017. The construction of the remaining tug, funded by the bridge loan advances in excess of the reserves, is recorded within construction in-progress within our consolidated balance sheet.

## 23. ACQUISITION OF MOSAIC FERTILIZANTES P&K S.A.

On December 19, 2016, we entered into an agreement with Vale S.A. (“Vale”) and Vale Fertilizer Netherlands B.V. (“Vale Netherlands” and, together with Vale and certain of its affiliates, the “Sellers”) to acquire all of the issued and outstanding capital stock of Vale Fertilizantes S.A. (now known as Mosaic Fertilizantes P&K S.A., which we also refer to as Mosaic Fertilizantes), the entity that conducted Vale’s global phosphate and potash operations, for a purchase price of (i) $1.25 billion in cash and (ii) 42,286,874 shares of our Common Stock. The agreement was amended by a letter agreement dated December 28, 2017, to, among other things, reduce the cash portion of the purchase price to $1.15 billion and the number of shares to be issued to 34,176,574.

On January 8, 2018, we completed our acquisition (the “Acquisition”) of Mosaic Fertilizantes. The aggregate consideration paid by Mosaic at closing was $1.08 billion in cash (after giving effect to certain adjustments based on matters such as the working capital of Mosaic Fertilizantes, which were estimated at the time of closing) and 34,176,574 shares of our Common Stock, par value $0.01 per share (“Common Stock”) which was valued at $26.92 at closing. The final purchase price is subject to determination of the actual working capital of Mosaic Fertilizantes at closing, a fair value determination of potential contingent consideration of up to $260 million, and evaluation of other consideration associated with assumed liabilities.

This acquisition allows us to expand our business in the fast-growing Brazilian agricultural market. Following the Acquisition, we are the leading fertilizer production and distribution company in Brazil. The assets we acquired include five Brazilian phosphate rock mines, four chemical plants, a potash mine in Brazil, the Sellers' 40% economic interest in the joint venture which owns the Miski Mayo phosphate rock mine in the Bayovar region of Peru, in which we already held a 35% economic interest, and a potash project in Kronau, Saskatchewan.

On the closing date, we also entered into an investor agreement (“Investor Agreement”) with Vale and Vale Fertilizer Netherlands B.V. that governs certain rights of and restrictions on Vale, Vale Fertilizer Netherlands B.V. and their respective affiliates (the “Vale Stockholders”) in connection with the shares of our Common Stock they own as a result of the Acquisition. These include certain rights to designate two individuals to Mosaic’s board of directors. In connection with the closing of the Acquisition, our board of directors was increased by one director, with Vale designating a new director for appointment to the board. The Vale Stockholders are also subject to certain transfer and standstill restrictions. In addition, until the later of the third anniversary of the closing and the date on which our board of directors no longer includes any Vale designees, the Vale Stockholders will agree to vote their shares of our stock (i) with respect to the election of directors, in accordance with the recommendation of our board of directors and (ii) with respect to any other proposal or resolution, at their election, either in the same manner as and in the same proportion to all voting securities that are not beneficially held by the Vale Stockholders are voted, or in accordance with the recommendation of our board of directors. Also under the Investor Agreement, the Vale Stockholders will be entitled to certain demand and to customary piggyback registration rights, beginning on the second anniversary of the closing of the transaction.

We are in the process of finalizing the accounting of the purchase price of the assets acquired and liabilities assumed. Accordingly, the pro forma financial disclosures and preliminary purchase price allocation for the Acquisition have not been included in this Annual Report on Form 10-K for the year ended December 31, 2017, because the information necessary to complete the disclosure was not yet available. However, the majority of the purchase price is expected to be allocated to fixed assets and mineral reserves.

We recognized approximately $26 million of acquisition and integration costs that were expensed during 2017. These costs are included within selling, general and administrative in the Consolidated Statement of Earnings.



## 24. BUSINESS SEGMENTS

The reportable segments are determined by management based upon factors such as products and services, production processes, technologies, market dynamics, and for which segment financial information is available for our chief operating decision maker.

For a description of our business segments see Note 1 of our Notes to Consolidated Financial Statements. We evaluate performance based on the operating earnings of the respective business segments, which includes certain allocations of corporate selling, general and administrative expenses. The segment results may not represent the actual results that would be expected if they were independent, stand-alone businesses. Corporate, Eliminations and Other primarily represents unallocated corporate office activities and eliminations. All intersegment transactions are eliminated within Corporate, Eliminations and other.



Segment information for the years 2017, 2016 and 2015 is as follows:

<table><tr><td>(in millions)</td><td>Phosphates</td><td>Potash</td><td>International Distribution</td><td>Corporate, Eliminations and Other</td><td>Total</td></tr><tr><td>Year Ended December 31, 2017</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Net sales to external customers</td><td>$ 2,826.6</td><td>$ 1,836.5</td><td>$ 2,712.3</td><td>$ 34.0</td><td>$ 7,409.4</td></tr><tr><td>Intersegment net sales</td><td>762.6</td><td>16.1</td><td>1.0</td><td>(779.7)</td><td>—</td></tr><tr><td>Net sales</td><td>3,589.2</td><td>1,852.6</td><td>2,713.3</td><td>(745.7)</td><td>7,409.4</td></tr><tr><td>Gross margin</td><td>332.2</td><td>391.6</td><td>175.4</td><td>(56.4)</td><td>842.8</td></tr><tr><td>Canadian resource taxes</td><td>—</td><td>70.1</td><td>—</td><td>—</td><td>70.1</td></tr><tr><td>Gross margin (excluding Canadian resource taxes)</td><td>332.2</td><td>461.7</td><td>175.4</td><td>(56.4)</td><td>912.9</td></tr><tr><td>Operating earnings</td><td>191.6</td><td>281.3</td><td>96.1</td><td>(103.3)</td><td>465.7</td></tr><tr><td>Capital expenditures</td><td>401.0</td><td>371.6</td><td>33.1</td><td>14.4</td><td>820.1</td></tr><tr><td>Depreciation, depletion and amortization expense</td><td>338.0</td><td>287.2</td><td>17.1</td><td>23.2</td><td>665.5</td></tr><tr><td>Equity in net earnings (loss) of nonconsolidated companies</td><td>16.0</td><td>—</td><td>—</td><td>0.7</td><td>16.7</td></tr><tr><td>Year Ended December 31, 2016</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Net sales to external customers</td><td>$ 2,928.4</td><td>$ 1,673.0</td><td>$ 2,532.5</td><td>$ 28.9</td><td>$ 7,162.8</td></tr><tr><td>Intersegment net sales</td><td>782.5</td><td>12.7</td><td>1.0</td><td>(796.2)</td><td>—</td></tr><tr><td>Net sales</td><td>3,710.9</td><td>1,685.7</td><td>2,533.5</td><td>(767.3)</td><td>7,162.8</td></tr><tr><td>Gross margin</td><td>349.8</td><td>256.6</td><td>146.2</td><td>57.4</td><td>810.0</td></tr><tr><td>Canadian resource taxes</td><td>—</td><td>101.1</td><td>—</td><td>—</td><td>101.1</td></tr><tr><td>Gross margin (excluding Canadian resource taxes)</td><td>349.8</td><td>357.7</td><td>146.2</td><td>57.4</td><td>911.1</td></tr><tr><td>Operating earnings</td><td>47.8</td><td>138.8</td><td>74.3</td><td>58.1</td><td>319.0</td></tr><tr><td>Capital expenditures</td><td>380.0</td><td>416.7</td><td>23.9</td><td>22.5</td><td>843.1</td></tr><tr><td>Depreciation, depletion and amortization expense</td><td>362.4</td><td>308.7</td><td>15.3</td><td>24.8</td><td>711.2</td></tr><tr><td>Equity in net earnings (loss) of nonconsolidated companies</td><td>0.2</td><td>(15.5)</td><td>(0.1)</td><td>—</td><td>(15.4)</td></tr><tr><td>Year Ended December 31, 2015</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Net sales to external customers</td><td>$ 3,920.9</td><td>$ 2,437.9</td><td>$ 2,503.7</td><td>$ 32.8</td><td>$ 8,895.3</td></tr><tr><td>Intersegment net sales(a)</td><td>699.3</td><td>9.1</td><td>1.8</td><td>(710.2)</td><td>—</td></tr><tr><td>Net sales</td><td>4,620.2</td><td>2,447.0</td><td>2,505.5</td><td>(677.4)</td><td>8,895.3</td></tr><tr><td>Gross margin(a)</td><td>837.1</td><td>788.3</td><td>147.8</td><td>(55.3)</td><td>1,717.9</td></tr><tr><td>Canadian resource taxes</td><td>—</td><td>248.0</td><td>—</td><td>—</td><td>248.0</td></tr><tr><td>Gross margin (excluding Canadian resource taxes)</td><td>837.1</td><td>1,036.3</td><td>147.8</td><td>(55.3)</td><td>1,965.9</td></tr><tr><td>Operating earnings (loss)</td><td>653.5</td><td>641.7</td><td>68.4</td><td>(84.8)</td><td>1,278.8</td></tr><tr><td>Capital expenditures</td><td>526.8</td><td>431.5</td><td>22.5</td><td>19.5</td><td>1,000.3</td></tr><tr><td>Depreciation, depletion and amortization expense</td><td>389.3</td><td>310.7</td><td>13.8</td><td>26.0</td><td>739.8</td></tr><tr><td>Equity in net earnings (loss) of nonconsolidated companies</td><td>(3.4)</td><td>—</td><td>(0.5)</td><td>1.5</td><td>(2.4)</td></tr><tr><td>Total assets as of December 31, 2017</td><td>$ 7,700.6</td><td>$ 8,301.7</td><td>$ 1,709.2</td><td>$ 921.9</td><td>$ 18,633.4</td></tr><tr><td>Total assets as of December 31, 2016</td><td>7,679.7</td><td>7,777.9</td><td>1,477.1</td><td>(94.0)</td><td>16,840.7</td></tr><tr><td>Total assets as of December 31, 2015</td><td>8,369.8</td><td>8,363.9</td><td>1,695.6</td><td>(1,039.8)</td><td>17,389.5</td></tr></table>

(a) Certain intercompany sales within the Phosphates segment are recognized as revenue before the final price is determined. These transactions had the effect of increasing Phosphate segment revenues and gross margin by $36.3 million and $2.0 million, respectively, for the twelve months ended December 31, 2015. There were no intersegment sales of this type outstanding as of December 31, 2017, and December 31, 2016. Revenues and cost of goods sold on these Phosphates sales are eliminated in the “Corporate and Other” category similar to all other intercompany transactions.



Financial information relating to our operations by geographic area is as follows:

<table><tr><td rowspan="2"></td><td rowspan="2">(in millions)</td><td colspan="3">Years Ended December 31,</td></tr><tr><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Net sales \( ^{(a)} \) :</td><td></td><td></td><td></td><td></td></tr><tr><td>Brazil</td><td></td><td>2,199.0</td><td>2,127.0</td><td>2,137.9</td></tr><tr><td>Canpotex \( ^{(b)} \)</td><td></td><td>700.6</td><td>604.5</td><td>1,052.8</td></tr><tr><td>Canada</td><td></td><td>508.9</td><td>498.2</td><td>681.9</td></tr><tr><td>India</td><td></td><td>305.2</td><td>296.7</td><td>382.2</td></tr><tr><td>China</td><td></td><td>206.3</td><td>171.2</td><td>205.2</td></tr><tr><td>Mexico</td><td></td><td>131.8</td><td>125.0</td><td>153.9</td></tr><tr><td>Australia</td><td></td><td>147.0</td><td>121.0</td><td>138.6</td></tr><tr><td>Paraguay</td><td></td><td>113.8</td><td>106.6</td><td>89.9</td></tr><tr><td>Colombia</td><td></td><td>86.9</td><td>104.9</td><td>147.5</td></tr><tr><td>Japan</td><td></td><td>71.7</td><td>82.7</td><td>111.6</td></tr><tr><td>Peru</td><td></td><td>56.9</td><td>68.3</td><td>72.7</td></tr><tr><td>Argentina</td><td></td><td>53.1</td><td>67.1</td><td>63.8</td></tr><tr><td>Chile</td><td></td><td>24.9</td><td>7.9</td><td>35.9</td></tr><tr><td>Other</td><td></td><td>122.3</td><td>104.0</td><td>335.7</td></tr><tr><td>Total international countries</td><td></td><td>4,728.4</td><td>4,485.1</td><td>5,609.6</td></tr><tr><td>United States</td><td></td><td>2,681.0</td><td>2,677.7</td><td>3,285.7</td></tr><tr><td>Consolidated</td><td></td><td>7,409.4</td><td>7,162.8</td><td>8,895.3</td></tr></table>

(a) Revenues are attributed to countries based on location of customer.

(b) The export association of the Saskatchewan potash producers.

<table><tr><td rowspan="2"></td><td rowspan="2">(in millions)</td><td colspan="2">December 31,</td></tr><tr><td>2017</td><td>2016</td></tr><tr><td>Long-lived assets:</td><td></td><td></td><td></td></tr><tr><td>Canada</td><td></td><td>$ 5,457.1</td><td>$ 5,070.3</td></tr><tr><td>Brazil</td><td></td><td>326.0</td><td>278.7</td></tr><tr><td>Other</td><td></td><td>103.7</td><td>77.9</td></tr><tr><td>Total international countries</td><td></td><td>5,886.8</td><td>5,426.9</td></tr><tr><td>United States</td><td></td><td>6,181.9</td><td>5,888.9</td></tr><tr><td>Consolidated</td><td></td><td>$ 12,068.7</td><td>$ 11,315.8</td></tr></table>

Excluded from the table above as of December 31, 2017 and 2016, are goodwill of $1,693.6 million and $1,630.9 million and deferred income taxes of $254.6 million and $836.4 million, respectively.



Net sales by product type for the years 2017, 2016 and 2015 are as follows:

(in millions)

Sales by product type:

Phosphate Crop Nutrients

Potash Crop Nutrients

Crop Nutrient Blends

Other \( ^{(a)} \) 

<table><tr><td colspan="4">Years Ended December 31,</td></tr><tr><td></td><td>2017</td><td>2016</td><td>2015</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>$ 3,184.7</td><td>$ 3,137.5</td><td>$ 4,018.6</td><td></td></tr><tr><td>2,224.4</td><td>1,879.8</td><td>2,593.9</td><td></td></tr><tr><td>1,384.7</td><td>1,403.7</td><td>1,404.1</td><td></td></tr><tr><td>615.6</td><td>741.8</td><td>878.7</td><td></td></tr><tr><td>$ 7,409.4</td><td>$ 7,162.8</td><td>$ 8,895.3</td><td></td></tr></table>

(a) Includes sales of animal feed ingredients and industrial potash.



## Quarterly Results (Unaudited)

In millions, except per share amounts and common stock prices

<table><tr><td rowspan="2"></td><td colspan="6">Quarter</td></tr><tr><td>First</td><td>Second</td><td>Third</td><td>Fourth</td><td>Year</td><td></td></tr><tr><td>Year Ended December 31, 2017</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Net sales</td><td>$ 1,578.1</td><td>$ 1,754.6</td><td>$ 1,984.8</td><td>$ 2,091.9</td><td>$ 7,409.4</td><td></td></tr><tr><td>Gross margin</td><td>129.6</td><td>192.3</td><td>240.8</td><td>280.1</td><td>842.8</td><td></td></tr><tr><td>Operating earnings</td><td>30.1</td><td>94.6</td><td>213.9</td><td>127.1</td><td>465.7</td><td></td></tr><tr><td>Net earnings (loss) attributable to Mosaic</td><td>(0.9)</td><td>97.3</td><td>227.5</td><td>(431.1)</td><td>(107.2)</td><td></td></tr><tr><td>Basic net earnings (loss) per share attributable to Mosaic</td><td>$ —</td><td>$ 0.28</td><td>$ 0.65</td><td>$ (1.23)</td><td>$ (0.31)</td><td></td></tr><tr><td>Diluted net earnings (loss) per share attributable to Mosaic</td><td>—</td><td>0.28</td><td>0.65</td><td>(1.23)</td><td>(0.31)</td><td></td></tr><tr><td>Common stock prices:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>High</td><td>$ 34.36</td><td>$ 29.51</td><td>$ 24.77</td><td>$ 26.12</td><td></td><td></td></tr><tr><td>Low</td><td>28.34</td><td>21.79</td><td>19.23</td><td>20.72</td><td></td><td></td></tr><tr><td>Year Ended December 31, 2016</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Net sales</td><td>$ 1,674.0</td><td>$ 1,674.6</td><td>$ 1,952.2</td><td>$ 1,862.0</td><td>$ 7,162.8</td><td></td></tr><tr><td>Gross margin(a)</td><td>236.7</td><td>154.0</td><td>213.3</td><td>206.0</td><td>810.0</td><td></td></tr><tr><td>Operating earnings</td><td>163.4</td><td>12.3</td><td>69.7</td><td>73.6</td><td>319.0</td><td></td></tr><tr><td>Net earnings attributable to Mosaic</td><td>256.8</td><td>(10.2)</td><td>39.2</td><td>12.0</td><td>297.8</td><td></td></tr><tr><td>Basic net earnings per share attributable to Mosaic</td><td>$ 0.73</td><td>$ (0.03)</td><td>$ 0.11</td><td>$ 0.03</td><td>$ 0.85</td><td></td></tr><tr><td>Diluted net earnings per share attributable to Mosaic</td><td>0.73</td><td>(0.03)</td><td>0.11</td><td>0.03</td><td>0.85</td><td></td></tr><tr><td>Common stock prices:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>High</td><td>$ 31.10</td><td>$ 29.66</td><td>$ 30.96</td><td>$ 31.54</td><td></td><td></td></tr><tr><td>Low</td><td>22.02</td><td>24.42</td><td>23.73</td><td>22.77</td><td></td><td></td></tr></table>

(a) In the fourth quarter of 2016, we recorded an adjustment for errors in our average depletion rate beginning in the third quarter of 2014 which approximated $1.4 million per quarter, resulting in a net correction of $8.6 million.

The number of holders of record of our Common Stock as of February 15, 2018, was 1,741.

Dividends have been declared on a quarterly basis during all periods presented. In the second quarter of 2015, we increased our annual dividend to $1.10 per share. In the second quarter of 2017, we decreased our annual dividend to $0.60 per share and in the fourth quarter of 2017, we decreased it to $0.10 per share.



The following table presents our selected financial data. This information has been derived from our audited consolidated financial statements. This historical data should be read in conjunction with the Consolidated Financial Statements and the related notes and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

## Five Year Comparison
In millions, except per share amounts

<table><tr><td rowspan="2"></td><td colspan="4">Years Ended December 31,</td><td colspan="2">Seven Months Ended December 31,</td><td rowspan="2">Year Ended May 31, 2013</td></tr><tr><td>2017</td><td>2016</td><td>2015</td><td>2014</td><td>2013</td><td>2013</td></tr><tr><td>Statements of Operations Data:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Net sales</td><td>$ 7,409.4</td><td>$ 7,162.8</td><td>$ 8,895.3</td><td>$ 9,055.8</td><td>$ 4,765.9</td><td>$ 9,974.1</td><td></td></tr><tr><td>Cost of goods sold</td><td>6,566.6</td><td>6,352.8</td><td>7,177.4</td><td>7,129.2</td><td>3,937.6</td><td>7,213.9</td><td></td></tr><tr><td>Gross margin</td><td>842.8</td><td>810.0</td><td>1,717.9</td><td>1,926.6</td><td>828.3</td><td>2,760.2</td><td></td></tr><tr><td>Selling, general and administrative expenses</td><td>301.3</td><td>304.2</td><td>361.2</td><td>382.4</td><td>211.8</td><td>427.3</td><td></td></tr><tr><td>(Gain) loss on assets sold and to be sold(c)</td><td>—</td><td>—</td><td>—</td><td>(16.4)</td><td>122.8</td><td>—</td><td></td></tr><tr><td>Carlsbad restructuring expense(b)</td><td>—</td><td>—</td><td>—</td><td>125.4</td><td>—</td><td>—</td><td></td></tr><tr><td>Other operating expenses</td><td>75.8</td><td>186.8</td><td>77.9</td><td>123.4</td><td>76.8</td><td>123.3</td><td></td></tr><tr><td>Operating earnings</td><td>465.7</td><td>319.0</td><td>1,278.8</td><td>1,311.8</td><td>416.9</td><td>2,209.6</td><td></td></tr><tr><td>Loss (gain) in value of share repurchase agreement</td><td>—</td><td>—</td><td>—</td><td>(60.2)</td><td>73.2</td><td>—</td><td></td></tr><tr><td>Interest (expense) income, net</td><td>(138.1)</td><td>(112.4)</td><td>(97.8)</td><td>(107.6)</td><td>(13.3)</td><td>18.8</td><td></td></tr><tr><td>Foreign currency transaction gain (loss)</td><td>49.9</td><td>40.1</td><td>(60.5)</td><td>79.1</td><td>16.5</td><td>(15.9)</td><td></td></tr><tr><td>Other (expense) income</td><td>(3.5)</td><td>(4.3)</td><td>(17.2)</td><td>(5.8)</td><td>(9.1)</td><td>2.0</td><td></td></tr><tr><td>Earnings from consolidated companies before income taxes</td><td>374.0</td><td>242.4</td><td>1,103.3</td><td>1,217.3</td><td>484.2</td><td>2,214.5</td><td></td></tr><tr><td>(Benefit from) Provision for income taxes(a)(b)(d)</td><td>494.9</td><td>(74.2)</td><td>99.1</td><td>184.7</td><td>152.6</td><td>341.0</td><td></td></tr><tr><td>(Loss) earnings from consolidated companies</td><td>(120.9)</td><td>316.6</td><td>1,004.2</td><td>1,032.6</td><td>331.6</td><td>1,873.5</td><td></td></tr><tr><td>Equity in net earnings (loss) of nonconsolidated companies</td><td>16.7</td><td>(15.4)</td><td>(2.4)</td><td>(2.2)</td><td>10.9</td><td>18.3</td><td></td></tr><tr><td>Net (loss) earnings including noncontrolling interests</td><td>(104.2)</td><td>301.2</td><td>1,001.8</td><td>1,030.4</td><td>342.5</td><td>1,891.8</td><td></td></tr><tr><td>Less: Net earnings attributable to noncontrolling interests</td><td>3.0</td><td>3.4</td><td>1.4</td><td>1.8</td><td>2.5</td><td>3.1</td><td></td></tr><tr><td>Net (loss) earnings attributable to Mosaic</td><td>(107.2)</td><td>297.8</td><td>1,000.4</td><td>1,028.6</td><td>340.0</td><td>1,888.7</td><td></td></tr></table>



<table><tr><td rowspan="2"></td><td colspan="5">Seven Months Ended December 31,</td><td rowspan="2">Year Ended May 31, 2013</td></tr><tr><td colspan="3">Years Ended December 31,</td><td>2014</td><td>2013</td></tr><tr><td>Earnings per common share attributable to Mosaic:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Basic net (loss) earnings per share attributable to Mosaic</td><td>$ (0.31)</td><td>$ 0.85</td><td>$ 2.79</td><td>$ 2.69</td><td>$ 0.80</td><td>$ 4.44</td></tr><tr><td>Basic weighted average number of shares outstanding</td><td>350.9</td><td>350.4</td><td>358.5</td><td>374.1</td><td>420.8</td><td>425.7</td></tr><tr><td>Diluted net (loss) earnings per share attributable to Mosaic</td><td>$ (0.31)</td><td>$ 0.85</td><td>$ 2.78</td><td>$ 2.68</td><td>$ 0.80</td><td>$ 4.42</td></tr><tr><td>Diluted weighted average number of shares outstanding</td><td>350.9</td><td>351.7</td><td>360.3</td><td>375.6</td><td>422.0</td><td>426.9</td></tr><tr><td>Balance Sheet Data (at period end):</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Cash and cash equivalents</td><td>$ 2,153.5</td><td>$ 673.1</td><td>$ 1,276.3</td><td>$ 2,374.6</td><td>$ 5,293.1</td><td>$ 3,697.1</td></tr><tr><td>Total assets</td><td>18,633.4</td><td>16,840.7</td><td>17,389.5</td><td>18,283.0</td><td>19,554.0</td><td>18,086.0</td></tr><tr><td>Total long-term debt (including current maturities)</td><td>5,221.6</td><td>3,818.1</td><td>3,811.2</td><td>3,819.0</td><td>3,009.3</td><td>1,010.5</td></tr><tr><td>Total liabilities</td><td>8,994.3</td><td>7,218.2</td><td>7,824.5</td><td>7,562.4</td><td>8,233.4</td><td>4,643.1</td></tr><tr><td>Total equity</td><td>9,639.1</td><td>9,622.5</td><td>9,565.0</td><td>10,720.6</td><td>11,320.6</td><td>13,442.9</td></tr><tr><td>Other Financial Data:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation, depletion and amortization</td><td>$ 665.5</td><td>$ 711.2</td><td>$ 739.8</td><td>$ 750.9</td><td>$ 386.2</td><td>$ 604.8</td></tr><tr><td>Net cash provided by operating activities</td><td>935.5</td><td>1,260.2</td><td>2,038.3</td><td>2,122.1</td><td>912.3</td><td>1,880.5</td></tr><tr><td>Capital expenditures</td><td>820.1</td><td>843.1</td><td>1,000.3</td><td>929.1</td><td>800.0</td><td>1,588.3</td></tr><tr><td>Dividends per share \( ^{(e)} \)</td><td>0.35</td><td>1.10</td><td>1.075</td><td>1.00</td><td>0.50</td><td>1.00</td></tr></table>

(a) The year ended December 31, 2017, includes a discrete income tax expense of approximately $451 million. The years ended December 31, 2016 and 2015, include a discrete income tax benefit of approximately $54 million and $47 million, respectively. See further discussion in Note 12 to the Consolidated Financial Statements.

(b) In 2014, we decided to permanently discontinue production of MOP at our Carlsbad, New Mexico, facility. The pre-tax charges were $125.4 million. The year ended December 31, 2014, also includes a discrete income tax benefit of approximately $152 million primarily related to the acquisition of ADM and the sale of our distribution business in Argentina.

(c) In the seven months ended December 31, 2013, we decided to exit our distribution businesses in Argentina and Chile and wrote-down the related assets by approximately $50 million. We decided to sell the salt operations at our Hersey, Michigan, mine and close the related potash operations which resulted in a write-down of approximately $48 million. We also wrote-off engineering costs of approximately $25 million related to a proposed ammonia plant.

(d) Fiscal 2013 includes a discrete income tax benefit of $179.3 million associated with our non-U.S. subsidiaries due to the resolution of certain tax matters.

(e) Dividends have been declared quarterly during all periods presented. In the second quarter of 2017, we decreased our annual dividend to $0.60 per share and in the fourth quarter of 2017, we decreased it to $0.10 per share. In 2015 and fiscal 2013 we increased our annual dividend to $1.10 and $1.00 per share, respectively.



## SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS

## For the years ended December 31, 2017, 2016 and 2015

In millions

<table><tr><td>Column A</td><td>Column B</td><td colspan="2">Column C</td><td>Column D</td><td>Column E</td></tr><tr><td rowspan="2">Description</td><td rowspan="2">Balance Beginning of Period</td><td colspan="2">Additions</td><td rowspan="2">Deductions</td><td rowspan="2">Balance at End of Period \( ^{(a)} \)</td></tr><tr><td>Charges or (Reductions) to Costs and Expenses</td><td>Charges or (Reductions) to Other Accounts \( ^{(b)(c)} \)</td></tr><tr><td>Allowance for doubtful accounts, deducted from accounts receivable in the balance sheet:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year ended December 31, 2015</td><td>12.1</td><td>4.8</td><td>—</td><td>(6.5)</td><td>10.4</td></tr><tr><td>Year ended December 31, 2016</td><td>10.4</td><td>(1.4)</td><td>1.7</td><td>(0.4)</td><td>10.3</td></tr><tr><td>Year ended December 31, 2017</td><td>10.3</td><td>5.6</td><td>(0.2)</td><td>(0.2)</td><td>15.5</td></tr><tr><td>Income tax valuation allowance, related to deferred income taxes</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year ended December 31, 2015</td><td>28.3</td><td>(1.4)</td><td>(15.0)</td><td>—</td><td>11.9</td></tr><tr><td>Year ended December 31, 2016</td><td>11.9</td><td>18.7</td><td>—</td><td>—</td><td>30.6</td></tr><tr><td>Year ended December 31, 2017</td><td>30.6</td><td>553.5</td><td>—</td><td>—</td><td>584.1</td></tr></table>

(a) Allowance for doubtful accounts balance includes $13.2 million, $7.6 million, $4.5 million of allowance on long-term receivables recorded in other long term assets for the years ended December 31, 2017, 2016, and 2015, respectively.

(b) The income tax valuation allowance adjustment was recorded to accumulated other comprehensive income and deferred taxes.

(c) For the year ended December 31, 2015, $12.7 million of the income tax valuation allowance reductions related to the disposition of Chile.



## Management’s Report on Internal Control Over Financial Reporting

The Company’s management is responsible for establishing and maintaining effective internal control over financial reporting, as defined in Rule 13a-15(f) under the Securities Exchange Act of 1934. The Company’s internal control system is a process designed to provide reasonable assurance to our management, Board of Directors and stockholders regarding the reliability of financial reporting and the preparation and fair presentation of our consolidated financial statements for external reporting purposes in accordance with U.S. generally accepted accounting principles (U.S. GAAP), and includes those policies and procedures that:

- Pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets;

- Provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in conformity with U.S. GAAP, and that receipts and expenditures are being made only in accordance with authorizations from our management and Board of Directors; and

- Provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management assessed the effectiveness of the Company’s internal control over financial reporting as of December 31, 2017. In assessing the effectiveness of our internal control over financial reporting as of December 31, 2017, management used the control criteria framework of the Committee of Sponsoring Organizations (COSO) of the Treadway Commission published in its report entitled Internal Control—Integrated Framework (2013). Based on their evaluation, management concluded that the Company’s internal control over financial reporting was effective as of December 31, 2017. KPMG LLP, the independent registered public accounting firm that audited the financial statements included in this annual report, has issued an auditors’ report on the Company’s internal control over financial reporting as of December 31, 2017.






## Board of Directors

Robert L. Lumpkins
Retired Vice Chairman and Chief
Financial Officer of Cargill, Incorporated
Chairman of The Mosaic Company
Committees: Audit; Corporate
Governance and Nominating

Nancy E. Cooper
Retired Executive Vice President
and Chief Financial Officer of
CA Technologies
Committees: Audit (Chair); Corporate
Governance and Nominating

Gregory L. Ebel
Chairman of Enbridge, Inc.
Committees: Corporate Governance and Nominating (Chair); Audit

Timothy S. Gitzel
President and Chief Executive Officer
of Cameco Corporation
Committees: Audit; Compensation

Denise C. Johnson
Group President, Resources Industries
Group of Caterpillar, Incorporated
Committees: Compensation;
Environmental, Health, Safety and
Sustainable Development

## Executive Officers

James “Joc” C. O’Rourke
President and Chief Executive Officer

Bruce M. Bodine
Senior Vice President – Potash

Kimberly Bors
Senior Vice President – Human
Resources

## Emery N. Koenig

Retired Vice Chairman and Chief Risk Officer of Cargill, Incorporated

Committees: Corporate Governance and Nominating, Environmental, Health, Safety and Sustainable Development

## William T. Monahan

Retired Chairman, President and Chief Executive Officer of Imation Corp. Committees: Compensation (Chair); Audit

James “Joc” C. O’Rourke
President and Chief Executive Officer
of The Mosaic Company

## James L. Popowich

Retired President and Chief Executive Officer of Elk Valley Coal Corporation

Committees: Compensation;
Environmental, Health, Safety and
Sustainable Development

## David T. Seaton

Chairman and Chief Executive Officer of Fluor Corporation

Committees: Compensation;
Environmental, Health, Safety and
Sustainable Development

Anthony T. Brausen
Senior Vice President and interim
Chief Financial Officer

Mark J. Isaacson
Senior Vice President, General
Counsel and Corporate Secretary

Richard N. McLellan
Senior Vice President – Brazil

## Steven M. Seibert

Attorney at The Seibert Law Firm
Committees: Environmental, Health, Safety and Sustainable Development (Chair); Corporate Governance and Nominating

## Luciano Siani Pires

Chief Financial Officer of Vale S.A.
Committee: Environmental, Health, Safety and Sustainable Development

## Kelvin R. Westbrook

President and Chief Executive Officer of KRW Advisors, LLC

Committees: Corporate Governance and Nominating; Environmental, Health, Safety and Sustainable Development



# Shareholder Information

## Safe Harbor

Certain statements in this review that are neither reported financials nor other historical information are forward-looking statements. Such forward-looking statements are not guarantees of future performance and are subject to risks and uncertainties that could cause actual results and Mosaic's plans and objectives to differ materially from those expressed in the forward-looking statements. Additional information about such risks and uncertainties is set forth in our reports filed with the Securities and Exchange Commission.

## Shareholder Return Information

The following performance graph compares the cumulative total return on our common stock for a period beginning May 31, 2012, with the cumulative total return of the Standard & Poor's 500 Stock Index, and a peer group of companies selected by us.

Our 2017 peer group is comprised of Agrium Inc., CF Industries Holdings, Inc. and Potash Corporation of Saskatchewan Inc. Our stock price performance differs from that of our peer group during some periods due to differences in the market segments in which we compete or in the level of our participation in such segments compared to other members of the peer group. In accordance with Standard & Poor's policies, companies with less than a majority of their stock publicly traded are not included in the S&P 500 Index. The comparisons set forth below assume an initial investment of $100 and reinvestment of dividends or distributions.

COMPARISON OF 67-MONTH CUMULATIVE TOTAL RETURN \( ^{*} \) 
AMONG THE MOSAIC COMPANY, S&P 500 AND PEER GROUP INDEX



*$100 invested on 5/31/12 in stock or index, including reinvestment of dividends.

Fiscal year ending December 31.

© 2018 Standard & Poor's, a division of S&P Global. All rights reserved.

Corporate Headquarters

3033 Campus Drive

Suite E490

Plymouth, MN 55441

763.577.2700

800.918.8270

Stock Exchange

New York Stock Exchange

Ticker Symbol: MOS

Transfer Agent

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Trust Company

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New York, NY 10038

877.777.0800

Independent Registered

Public Accounting Firm

KPMG LLP

90 South Seventh Street

Minneapolis, MN 55402

Media Contact

Ben Pratt

Vice President –

Corporate Public Affairs

763.577.6102

media@mosaicco.com

Investor Contact

Laura Gagnon

Vice President –

Investor Relations

763.577.8213

investor@mosaicco.com

Mosaic's 10-K Report, filed

in February 2018 with the

Securities and Exchange

Commission, is available to

shareholders and interested

parties without charge

by contacting Laura Gagnon.

Website

mosaicco.com



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The Mosaic Company
3033 Campus Drive
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800.918.8270
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