In the first quarter of 2012, our Power Generation segment reorganized its reporting structure to include the following businesses.  ?
Power products - Our power products business manufactures generators for commercial and consumer applications ranging from two kilowatts (kW) to one megawatt (MW) under the Cummins Power Generation and Cummins Onan brands.  ?
Power systems - Our power systems business manufactures and sells diesel fuel-based generator sets over one MW, paralleling systems and transfer switches for critical protection and distributed generation applications.
We also offer integrated systems that consist of generator sets, power transfer and paralleling switchgear for applications such as data centers, health care facilities and waste water treatment plants.  ?
Alternators - Our alternator business (formally called generator technologies prior to the fourth quarter of 2013) designs, manufactures, sells and services A/C generator/alternator products internally as well as to other generator set assemblers.
Our products are sold under the Stamford, AVK and Markon brands and range in output from 0.6 kilovolt-amperes (kVA) to 30,000 kVA.  ?
Power solutions - Our power solutions business provides natural gas fuel-based turnkey solutions for distributed generation and energy management applications in the range of 300-2000 kW products.
The business also serves a global rental account for diesel and gas generator sets.
Sales for our Power Generation segment by business (including 2011 reorganized balances) were as follows:
## Table 0 ##
2013 vs.  2012 Sales Power Generation segment sales decreased versus 2012, primarily due to lower demand in the power solutions and power systems businesses.
The following are the primary drivers by business: ?
Power solutions sales decreased primarily due to lower volumes in the U. K. , partially offset by increased sales in Asia.  ?
Power systems sales decreased primarily due to reduced demand in India, the Middle East, China, Asia and Russia, partially offset by increased sales in Western Europe.  ?
Alternators sales decreased primarily due to demand reductions in Europe, the U. K.  and India.
The decreases above were partially offset by power products as sales increased primarily due to higher volumes in North America and improved price realization.
These increases were partially offset by demand reductions in India and Asia and unfavorable foreign currency fluctuations.
Segment EBIT Power Generation segment EBIT decreased versus 2012, primarily due to lower gross margin, partially offset by lower selling, general and administrative expenses.
Power Generation segment EBIT for 2013 included an $8 million legal settlement in the third quarter and an $8 million impairment charge for the write-off of an equity method investment in the fourth quarter, while segment EBIT for 2012 included restructuring and other charges of $12 million in the fourth quarter.
Major components of EBIT and related changes to segment EBIT and EBIT as a percentage of sales were as follows:
Non-GAAP Financial Measure Adjusted earnings (which Con Edison formerly referred to as earnings from ongoing operations) is a financial measure that is not determined in accordance with generally accepted accounting principles in the United States of America (GAAP).
This non-GAAP financial measure should not be considered as an alternative to net income, which is an indicator of financial performance determined in accordance with GAAP.
Adjusted earnings excludes from net income the net mark-to-market changes in the fair value of the derivative instruments the competitive energy businesses use to economically hedge market price fluctuations in related underlying physical transactions for the purchase or sale of electricity and gas.
Adjusted earnings may also exclude from net income certain other items that the company does not consider indicative of its ongoing financial performance.
Management uses this non-GAAP financial measure to facilitate the analysis of the company's financial performance as compared to its internal budgets and previous financial results.
Management also uses this non-GAAP financial measure to communicate to investors and others the company’s expectations regarding its future earnings and dividends on its common stock.
Management believes that this non-GAAP financial measure also is useful and meaningful to investors to facilitate their analysis of the company's financial performance.
The following table is a reconciliation of Con Edison’s reported net income to adjusted earnings and reported earnings per share to adjusted earnings per share.
## Table 1 ##
(a) An impairment charge of $3 million, after taxes of $2 million, was recorded related to O&R's wholly-owned subsidiary, Pike County Light & Power Company (Pike).
(b) After taxes of $19 million.
(c) In 2013, a court disallowed tax losses claimed by Con Edison relating to Con Edison Development’s Lease In/Lease Out (LILO) transactions and the company subsequently terminated the transactions, resulting in a charge to earnings of $95 million (after taxes of $63 million).
In 2014, adjustments were made to taxes and accrued interest.
See Note J to the financial statements in Item 8.
(d) After taxes of $9 million, $29 million, $30 million and $55 million for the years ended December 31, 2011 through 2014, respectively
Item 7A.
Quantitative and Qualitative Disclosures About Market Risk (Amounts in millions) In the normal course of business, we are exposed to market risks related to interest rates, foreign currency rates and certain balance sheet items.
From time to time, we use derivative instruments, pursuant to established guidelines and policies, to manage some portion of these risks.
Derivative instruments utilized in our hedging activities are viewed as risk management tools and are not used for trading or speculative purposes.
Interest Rates Our exposure to market risk for changes in interest rates relates primarily to the fair market value and cash flows of our debt obligations.
The majority of our debt (approximately 86% and 94% as of December 31, 2018 and 2017, respectively) bears interest at fixed rates.
We do have debt with variable interest rates, but a 10% increase or decrease in interest rates would not be material to our interest expense or cash flows.
The fair market value of our debt is sensitive to changes in interest rates, and the impact of a 10% change in interest rates is summarized below.
## Table 2 ##
We have used interest rate swaps for risk management purposes to manage our exposure to changes in interest rates.
We did not have any interest rate swaps outstanding as of December 31, 2018.
We had $673.5 of cash, cash equivalents and marketable securities as of December 31, 2018 that we generally invest in conservative, short-term bank deposits or securities.
The interest income generated from these investments is subject to both domestic and foreign interest rate movements.
During 2018 and 2017, we had interest income of $21.8 and $19.4, respectively.
Based on our 2018 results, a 100 basis-point increase or decrease in interest rates would affect our interest income by approximately $6.7, assuming that all cash, cash equivalents and marketable securities are impacted in the same manner and balances remain constant from year-end 2018 levels.
Foreign Currency Rates We are subject to translation and transaction risks related to changes in foreign currency exchange rates.
Since we report revenues and expenses in U. S.  Dollars, changes in exchange rates may either positively or negatively affect our consolidated revenues and expenses (as expressed in U. S.  Dollars) from foreign operations.
The foreign currencies that most favorably impacted our results during the year ended December 31, 2018 were the Euro and British Pound Sterling.
The foreign currencies that most adversely impacted our results during the year ended December 31, of 2018 were the Argentine Peso and Brazilian Real.
Based on 2018 exchange rates and operating results, if the U. S.  Dollar were to strengthen or weaken by 10%, we currently estimate operating income would decrease or increase approximately 4%, assuming that all currencies are impacted in the same manner and our international revenue and expenses remain constant at 2018 levels.
The functional currency of our foreign operations is generally their respective local currency.
Assets and liabilities are translated at the exchange rates in effect at the balance sheet date, and revenues and expenses are translated at the average exchange rates during the period presented.
The resulting translation adjustments are recorded as a component of accumulated other comprehensive loss, net of tax, in the stockholders’ equity section of our Consolidated Balance Sheets.
Our foreign subsidiaries generally collect revenues and pay expenses in their functional currency, mitigating transaction risk.
However, certain subsidiaries may enter into transactions in currencies other than their functional currency.
Assets and liabilities denominated in currencies other than the functional currency are susceptible to movements in foreign currency until final settlement.
Currency transaction gains or losses primarily arising from transactions in currencies other than the functional currency are included in office and general expenses.
We regularly review our foreign exchange exposures that may have a material impact on our business and from time to time use foreign currency forward exchange contracts or other

<table><tr><td></td><td></td><td></td><td></td><td colspan="4">Favorable/(Unfavorable)</td></tr><tr><td></td><td colspan="3">Years ended December 31,</td><td colspan="2">2013 vs. 2012</td><td colspan="2">2012 vs. 2011</td></tr><tr><td>In millions</td><td>2013</td><td>2012</td><td>2011</td><td>Amount</td><td>Percent</td><td>Amount</td><td>Percent</td></tr><tr><td>Power products</td><td>$1,725</td><td>$1,654</td><td>$1,636</td><td>$71</td><td>4%</td><td>$18</td><td>1%</td></tr><tr><td>Power systems</td><td>656</td><td>757</td><td>815</td><td>-101</td><td>-13%</td><td>-58</td><td>-7%</td></tr><tr><td>Alternators</td><td>496</td><td>566</td><td>673</td><td>-70</td><td>-12%</td><td>-107</td><td>-16%</td></tr><tr><td>Power solutions</td><td>154</td><td>291</td><td>374</td><td>-137</td><td>-47%</td><td>-83</td><td>-22%</td></tr><tr><td>Total sales</td><td>$3,031</td><td>$3,268</td><td>$3,498</td><td>$-237</td><td>-7%</td><td>$-230</td><td>-7%</td></tr></table>
<table><tr><td>(Millions of Dollars, except per share amounts)</td><td>2011</td><td>2012</td><td>2013</td><td>2014</td><td>2015</td></tr><tr><td>Reported net income – GAAP basis</td><td>$1,051</td><td>$1,138</td><td>$1,062</td><td>$1,092</td><td>$1,193</td></tr><tr><td>Impairment of assets held for sale (a)</td><td>—</td><td>—</td><td>—</td><td>—</td><td>3</td></tr><tr><td>Gain on sale of solar electric production projects (b)</td><td>—</td><td>—</td><td>—</td><td>-26</td><td>—</td></tr><tr><td>Loss from LILO transactions (c)</td><td>—</td><td>—</td><td>95</td><td>1</td><td>—</td></tr><tr><td>Net mark-to-market effects of the competitive energy businesses (d)</td><td>13</td><td>-40</td><td>-45</td><td>73</td><td>—</td></tr><tr><td>Adjusted earnings</td><td>$1,064</td><td>$1,098</td><td>$1,112</td><td>$1,140</td><td>$1,196</td></tr><tr><td>Reported earnings per share – GAAP basis (basic)</td><td>$3.59</td><td>$3.88</td><td>$3.62</td><td>$3.73</td><td>$4.07</td></tr><tr><td>Impairment of assets held for sale</td><td>—</td><td>—</td><td>—</td><td>—</td><td>0.01</td></tr><tr><td>Gain on sale of solar electric production projects</td><td>—</td><td>—</td><td>—</td><td>-0.09</td><td>—</td></tr><tr><td>Loss from LILO transactions</td><td>—</td><td>—</td><td>0.32</td><td>—</td><td>—</td></tr><tr><td>Net mark-to-market effects of the competitive energy businesses</td><td>0.05</td><td>-0.13</td><td>-0.14</td><td>0.25</td><td>—</td></tr><tr><td>Adjusted earnings per share</td><td>$3.64</td><td>$3.75</td><td>$3.80</td><td>$3.89</td><td>$4.08</td></tr></table>
<table><tr><td></td><td>Increase/(Decrease)in Fair Market Value</td></tr><tr><td>As of December 31,</td><td>10% Increasein Interest Rates</td><td>10% Decreasein Interest Rates</td></tr><tr><td>2018</td><td>$-91.3</td><td>$82.5</td></tr><tr><td>2017</td><td>-20.2</td><td>20.6</td></tr></table>

Question: during 2017 and 2018 , what was the average interest income , in millions?