Notes to Consolidated Financial Statements Note 18.
Commitments and Contingencies – (Continued) undisclosed liabilities.
Certain provisions of the indemnification agreements survive indefinitely, while others survive until the applicable statutes of limitation expire, or until the agreed upon contract terms expire.
In the normal course of business, CNA also provided guarantees, if the primary obligor fails to perform, to holders of structured settlement annuities provided by a previously owned subsidiary, which are estimated to mature through 2120.
The potential amount of future payments CNA could be required to pay under these guarantees was approximately $2.0 billion as of December 31, 2015.
CNA does not believe a payable is likely under these guarantees, as CNA is the beneficiary of a trust that must be maintained at a level that approximates the discounted reserves for these annuities.
Diamond Offshore In February of 2016, Diamond Offshore entered into a ten-year agreement with GE Oil & Gas (“GE”) to provide services with respect to certain blowout preventer and related well control equipment on its four newbuild drillships.
Such services include management of maintenance, certification and reliability with respect to such equipment.
In connection with the services agreement with GE, Diamond Offshore will sell the equipment to a GE affiliate for an aggregate $210 million and will lease back such equipment over separate ten-year operating leases.
Diamond Offshore does not expect to realize any gain or loss on these sale and leaseback transactions.
Future commitments for the full term under the services agreement and leases are estimated to aggregate approximately $650 million.
Diamond Offshore is financially obligated under a contract with Hyundai Heavy Industries, Co.  Ltd.  (“Hyundai”) for the construction of a dynamically positioned, harsh environment semisubmersible drilling rig.
The total cost of the rig including shipyard costs, capital spares, commissioning, project management and shipyard supervision is estimated to be $764 million.
The remaining contractual payment of $440 million is due upon delivery of the rig, which is expected to occur in mid-2016.
Note 19.
Discontinued Operations As discussed in Note 2, HighMount and the CAC business are classified and presented as discontinued operations.
The Consolidated Statements of Income include discontinued operations of HighMount as follows:
## Table 0 ##
In 2014 and 2013, HighMount recorded ceiling test impairment charges of $29 million and $291 million ($19 million and $186 million after tax) related to the carrying value of its natural gas and oil properties.
The 2014 writedown was primarily attributable to insufficient reserve additions from exploration activities due to variability in well performance where HighMount was testing different horizontal target zones and hydraulic fracture designs.
The 2013 write-downs were primarily attributable to negative reserve revisions due to variability in well performance where HighMount was testing different horizontal target zones and hydraulic fracture designs and due to reduced
Notes to Consolidated Financial Statements Note 19.
Discontinued Operations – (Continued) average NGL prices used in the ceiling test calculations.
Had the effects of HighMount’s cash flow hedges not been considered in calculating the ceiling limitation, the impairments would have been $29 million and $301 million ($18 million and $192 million after tax) for the years ended December 31, 2014 and 2013.
Recognition of a ceiling test impairment charge was considered a triggering event for purposes of assessing any potential impairment of goodwill at HighMount under a two-step process.
The first step compared HighMount’s estimated fair value to its carrying value.
Due to the continued low market prices for natural gas and NGLs, the history of quarterly ceiling test write-downs during 2013 and the then potential for future impairments, and negative reserve revisions recognized during 2013, HighMount reassessed its goodwill impairment analysis.
To determine fair value, HighMount used a market approach which required significant estimates and assumptions and utilized significant unobservable inputs, representing a Level 3 fair value measurement.
These estimates and assumptions primarily included, but were not limited to, earnings before interest, tax, depreciation and amortization, production and reserves, control premium, discount rates and required capital expenditures.
These valuation techniques were based on analysis of comparable public companies, adjusted for HighMount’s growth profile.
In the first step, HighMount determined that its carrying value exceeded its fair value requiring HighMount to perform the second step and to estimate the fair value of its assets and liabilities.
The carrying value of goodwill was limited to the amount that HighMount’s estimated fair value exceeded the fair value of assets and liabilities.
As a result, HighMount recorded a goodwill impairment charge of $584 million ($382 million after tax) for the year ended December 31, 2013, consisting of all of its remaining goodwill.
The Consolidated Statements of Income include discontinued operations of the CAC business as follows:
## Table 1 ##
Note 20.  Business Segments The Company’s reportable segments are primarily based on its individual operating subsidiaries.
Each of the principal operating subsidiaries are headed by a chief executive officer who is responsible for the operation of its business and has the duties and authority commensurate with that position.
Investment gains (losses) and the related income taxes, excluding those of CNA, are included in the Corporate and other segment.
CNA’s results are reported in four business segments: Specialty, Commercial, International and Other Non-Core.
Specialty provides a broad array of professional, financial and specialty property and casualty products and services, through a network of independent agents, brokers and managing general underwriters.
Commercial includes property and casualty coverages sold to small businesses and middle market entities and organizations primarily through an independent agency distribution system.
Commercial also includes commercial insurance and risk management products sold to large corporations primarily through insurance brokers.
International provides management and professional liability coverages as well as a broad range of other property and casualty insurance
Item 7.
Management’s Discussion and Analysis of Financial Condition and Results of Operations Results of Operations – CNA Financial – (Continued)
## Table 2 ##
(a) For International, this does not include Hardy new business.2015 Compared with 2014 Net written premiums decreased $115 million in 2015 as compared with 2014.
This decrease was driven by the unfavorable effect of foreign currency exchange rates, the 2014 termination of a specialty product managing general underwriter relationship in Canada and unfavorable premium development at Hardy, for International, lower new business in Specialty and the residual effect of previous underwriting actions undertaken in certain business classes, offset by positive rate, higher retention and new business in Commercial.
Net earned premiums decreased $283 million in 2015 as compared with 2014, consistent with the trend in net written premiums.
Net operating income decreased $42 million in 2015 as compared with 2014.
The decrease in net operating income was due to lower net investment income and less favorable underwriting results in International, partially offset by improved underwriting results in Commercial.
Catastrophe losses were $85 million (after tax and noncontrolling interests) in 2015 as compared to catastrophe losses of $92 million (after tax and noncontrolling interests) in 2014.
Favorable net prior year development of $218 million and $50 million was recorded in 2015 and 2014.
Further information on net prior year development is included in Note 8 of the Notes to Consolidated Financial Statements included under Item 8.
Specialty’s combined ratio increased 1.1 points in 2015 as compared with 2014.
The loss ratio increased 0.1 point due to deterioration in the current accident year loss ratio, primarily offset by higher net favorable prior year development.
The expense ratio increased 1.0 point in 2015 as compared with 2014, driven by increased underwriting expenses and the unfavorable effect of lower net earned premiums.
Commercial’s combined ratio improved 7.8 points in 2015 as compared with 2014.
The loss ratio improved 10.2 points, due to favorable net prior year development for 2015 as compared to unfavorable net prior year development for 2014 and an improved current accident year loss ratio.
The expense ratio increased 2.4 points in 2015 as compared with 2014, due to higher expenses including increased commissions, the favorable impact in 2014 of recoveries on insurance receivables written off in prior years and the unfavorable effect of lower net earned premiums.
17.
Leases We lease certain locomotives, freight cars, and other property.
The Consolidated Statements of Financial Position as of December 31, 2016, and 2015 included $1,997 million, net of $1,121 million of accumulated depreciation, and $2,273 million, net of $1,189 million of accumulated depreciation, respectively, for properties held under capital leases.
A charge to income resulting from the depreciation for assets held under capital leases is included within depreciation expense in our Consolidated Statements of Income.
Future minimum lease payments for operating and capital leases with initial or remaining non-cancelable lease terms in excess of one year as of December 31, 2016, were as follows:
## Table 3 ##
Approximately 96% of capital lease payments relate to locomotives.
Rent expense for operating leases with terms exceeding one month was $535 million in 2016, $590 million in 2015, and $593 million in 2014.
When cash rental payments are not made on a straight-line basis, we recognize variable rental expense on a straight-line basis over the lease term.
Contingent rentals and sub-rentals are not significant.18.
Commitments and Contingencies Asserted and Unasserted Claims – Various claims and lawsuits are pending against us and certain of our subsidiaries.
We cannot fully determine the effect of all asserted and unasserted claims on our consolidated results of operations, financial condition, or liquidity.
To the extent possible, we have recorded a liability where asserted and unasserted claims are considered probable and where such claims can be reasonably estimated.
We do not expect that any known lawsuits, claims, environmental costs, commitments, contingent liabilities, or guarantees will have a material adverse effect on our consolidated results of operations, financial condition, or liquidity after taking into account liabilities and insurance recoveries previously recorded for these matters.
Personal Injury – The cost of personal injuries to employees and others related to our activities is charged to expense based on estimates of the ultimate cost and number of incidents each year.
We use an actuarial analysis to measure the expense and liability, including unasserted claims.
The Federal Employers’ Liability Act (FELA) governs compensation for work-related accidents.
Under FELA, damages are assessed based on a finding of fault through litigation or out-of-court settlements.
We offer a comprehensive variety of services and rehabilitation programs for employees who are injured at work.
Our personal injury liability is not discounted to present value due to the uncertainty surrounding the timing of future payments.
Approximately 94% of the recorded liability is related to asserted claims and approximately 6% is related to unasserted claims at December 31, 2016.
Because of the uncertainty surrounding the ultimate outcome of personal injury claims, it is reasonably possible that future costs to settle these claims may range from approximately $290 million to $317 million.
We record an accrual at the low end of the range as no amount of loss within the range is more probable than any other.
Estimates can vary over time due to evolving trends in litigation.

<table><tr><td> Year Ended December 31</td><td>2014</td><td>2013</td></tr><tr><td> (In millions)</td><td></td><td></td></tr><tr><td>Revenues:</td><td></td><td></td></tr><tr><td>Other revenue, primarily operating</td><td>$150</td><td>$259</td></tr><tr><td>Total</td><td>150</td><td>259</td></tr><tr><td>Expenses:</td><td></td><td></td></tr><tr><td>Impairment of goodwill</td><td></td><td>584</td></tr><tr><td>Other operating expenses</td><td></td><td></td></tr><tr><td>Impairment of natural gas and oil properties</td><td>29</td><td>291</td></tr><tr><td>Operating</td><td>173</td><td>252</td></tr><tr><td>Interest</td><td>8</td><td>17</td></tr><tr><td>Total</td><td>210</td><td>1,144</td></tr><tr><td>Loss before income tax</td><td>-60</td><td>-885</td></tr><tr><td>Income tax benefit</td><td>4</td><td>311</td></tr><tr><td>Results of discontinued operations, net of income tax</td><td>-56</td><td>-574</td></tr><tr><td>Impairment loss, net of tax benefit of $62</td><td>-138</td><td></td></tr><tr><td>Loss from discontinued operations</td><td>$-194</td><td>$-574</td></tr></table>
<table><tr><td> Year Ended December 31</td><td>2014</td><td>2013</td></tr><tr><td> (In millions)</td><td></td><td></td></tr><tr><td>Revenues:</td><td></td><td></td></tr><tr><td>Net investment income</td><td>$94</td><td>$168</td></tr><tr><td>Investment gains</td><td>3</td><td>11</td></tr><tr><td>Other revenues</td><td></td><td>2</td></tr><tr><td>Total</td><td>97</td><td>181</td></tr><tr><td>Expenses:</td><td></td><td></td></tr><tr><td>Insurance claims and policyholders’ benefits</td><td>75</td><td>141</td></tr><tr><td>Other operating expenses</td><td>2</td><td>3</td></tr><tr><td>Total</td><td>77</td><td>144</td></tr><tr><td>Income before income tax</td><td>20</td><td>37</td></tr><tr><td>Income tax expense</td><td>-6</td><td>-15</td></tr><tr><td>Results of discontinued operations, net of income tax</td><td>14</td><td>22</td></tr><tr><td>Loss on sale, net of tax benefit of $40</td><td>-211</td><td></td></tr><tr><td>Amounts attributable to noncontrolling interests</td><td>20</td><td>-2</td></tr><tr><td>Income (loss) from discontinued operations</td><td>$-177</td><td>$20</td></tr></table>
<table><tr><td>Year Ended December 31, 2013</td><td>Specialty</td><td>Commercial</td><td>International</td><td>Total</td></tr><tr><td>(In millions, except %)</td><td></td><td></td><td></td><td></td></tr><tr><td>Net written premiums</td><td>$2,880</td><td>$2,960</td><td>$959</td><td>$6,799</td></tr><tr><td>Net earned premiums</td><td>2,795</td><td>3,004</td><td>916</td><td>6,715</td></tr><tr><td>Net investment income</td><td>629</td><td>899</td><td>60</td><td>1,588</td></tr><tr><td>Net operating income</td><td>600</td><td>403</td><td>62</td><td>1,065</td></tr><tr><td>Net realized investment gains (losses)</td><td>-2</td><td>-9</td><td>3</td><td>-8</td></tr><tr><td>Net income</td><td>598</td><td>394</td><td>65</td><td>1,057</td></tr><tr><td>Other performance metrics:</td><td></td><td></td><td></td><td></td></tr><tr><td>Loss and loss adjustment expense ratio</td><td>57.0%</td><td>75.2%</td><td>53.4%</td><td>64.6%</td></tr><tr><td>Expense ratio</td><td>29.9</td><td>34.0</td><td>39.7</td><td>33.1</td></tr><tr><td>Dividend ratio</td><td>0.2</td><td>0.3</td><td></td><td>0.2</td></tr><tr><td>Combined ratio</td><td>87.1%</td><td>109.5%</td><td>93.1%</td><td>97.9%</td></tr><tr><td>Rate</td><td>6%</td><td>9%</td><td>1%</td><td>7%</td></tr><tr><td>Retention</td><td>85%</td><td>74%</td><td>79%</td><td>79%</td></tr><tr><td>New Business (a)</td><td>$342</td><td>$622</td><td>$117</td><td>$1,081</td></tr></table>
<table><tr><td>Millions</td><td>OperatingLeases</td><td>CapitalLeases</td></tr><tr><td>2017</td><td>$461</td><td>$221</td></tr><tr><td>2018</td><td>390</td><td>193</td></tr><tr><td>2019</td><td>348</td><td>179</td></tr><tr><td>2020</td><td>285</td><td>187</td></tr><tr><td>2021</td><td>245</td><td>158</td></tr><tr><td>Later years</td><td>1,314</td><td>417</td></tr><tr><td>Total minimum lease payments</td><td>$3,043</td><td>$1,355</td></tr><tr><td>Amount representing interest</td><td>N/A</td><td>-250</td></tr><tr><td>Present value of minimum lease payments</td><td>N/A</td><td>$1,105</td></tr></table>

Question: what is the highest total amount of Net operating income? (in million)
Answer: 600