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Fair Value | 9 Months Ended
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Sep. 30, 2017
Fair Value Disclosures [Abstract] |
FAIR VALUE | FAIR VALUE The fair value of current financial assets and liabilities, debt service reserves and other deposits approximate their reported carrying amounts. The estimated fair values of the Company’s assets and liabilities have been determined using available market information. By virtue of these amounts being estimates and based on hypothetical transactions to sell assets or transfer liabilities, the use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. The Company made no changes during the period to the fair valuation techniques described in Note 4—Fair Value in Item 8.—Financial Statements and Supplementary Data of its 2016 Form 10-K. Recurring Measurements — The following table presents, by level within the fair value hierarchy, the Company’s financial assets and liabilities that were measured at fair value on a recurring basis as of the dates indicated (in millions). For the Company’s investments in marketable debt and equity securities, the security classes presented are determined based on the nature and risk of the security and are consistent with how the Company manages, monitors and measures its marketable securities:
| September 30, 2017 |  | December 31, 2016
| Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AVAILABLE FOR SALE: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured debentures | $ | — |  |  | $ | 157 |  |  | $ | — |  |  | $ | 157 |  |  | $ | — |  |  | $ | 360 |  |  | $ | — |  |  | $ | 360 |
Certificates of deposit | — |  |  | 340 |  |  | — |  |  | 340 |  |  | — |  |  | 372 |  |  | — |  |  | 372 |
Government debt securities | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 9 |  |  | — |  |  | 9 |
Subtotal | — |  |  | 497 |  |  | — |  |  | 497 |  |  | — |  |  | 741 |  |  | — |  |  | 741 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual funds | — |  |  | 54 |  |  | — |  |  | 54 |  |  | — |  |  | 49 |  |  | — |  |  | 49 |
Subtotal | — |  |  | 54 |  |  | — |  |  | 54 |  |  | — |  |  | 49 |  |  | — |  |  | 49 |
Total available for sale | — |  |  | 551 |  |  | — |  |  | 551 |  |  | — |  |  | 790 |  |  | — |  |  | 790 |
TRADING: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual funds | 20 |  |  | — |  |  | — |  |  | 20 |  |  | 16 |  |  | — |  |  | — |  |  | 16 |
Total trading | 20 |  |  | — |  |  | — |  |  | 20 |  |  | 16 |  |  | — |  |  | — |  |  | 16 |
DERIVATIVES: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate derivatives | — |  |  | 13 |  |  | — |  |  | 13 |  |  | — |  |  | 18 |  |  | — |  |  | 18 |
Cross-currency derivatives | — |  |  | 14 |  |  | — |  |  | 14 |  |  | — |  |  | 4 |  |  | — |  |  | 4 |
Foreign currency derivatives | — |  |  | 37 |  |  | 242 |  |  | 279 |  |  | — |  |  | 54 |  |  | 255 |  |  | 309 |
Commodity derivatives | — |  |  | 44 |  |  | 8 |  |  | 52 |  |  | — |  |  | 38 |  |  | 7 |  |  | 45 |
Total derivatives — assets | — |  |  | 108 |  |  | 250 |  |  | 358 |  |  | — |  |  | 114 |  |  | 262 |  |  | 376 |
TOTAL ASSETS | $ | 20 |  |  | $ | 659 |  |  | $ | 250 |  |  | $ | 929 |  |  | $ | 16 |  |  | $ | 904 |  |  | $ | 262 |  |  | $ | 1,182 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
DERIVATIVES: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate derivatives | $ | — |  |  | $ | 104 |  |  | $ | 192 |  |  | $ | 296 |  |  | $ | — |  |  | $ | 121 |  |  | $ | 179 |  |  | $ | 300 |
Cross-currency derivatives | — |  |  | 5 |  |  | — |  |  | 5 |  |  | — |  |  | 18 |  |  | — |  |  | 18 |
Foreign currency derivatives | — |  |  | 42 |  |  | — |  |  | 42 |  |  | — |  |  | 64 |  |  | — |  |  | 64 |
Commodity derivatives | — |  |  | 16 |  |  | 2 |  |  | 18 |  |  | — |  |  | 40 |  |  | 2 |  |  | 42 |
Total derivatives — liabilities | — |  |  | 167 |  |  | 194 |  |  | 361 |  |  | — |  |  | 243 |  |  | 181 |  |  | 424 |
TOTAL LIABILITIES | $ | — |  |  | $ | 167 |  |  | $ | 194 |  |  | $ | 361 |  |  | $ | — |  |  | $ | 243 |  |  | $ | 181 |  |  | $ | 424 |
As of September 30, 2017, all AFS debt securities had stated maturities within one year. For the three and nine months ended September 30, 2017 and 2016, no other-than-temporary impairments of marketable securities were recognized in earnings or Other Comprehensive Income (Loss). Gains and losses on the sale of investments are determined using the specific-identification method. The following table presents gross proceeds from the sale of AFS securities during the periods indicated (in millions):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Gross proceeds from sale of AFS securities | $ | 1,020 |  |  | $ | 812 |  |  | $ | 2,982 |  |  | $ | 3,216 |
The following tables present a reconciliation of net derivative assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2017 and 2016 (presented net by type of derivative in millions). Transfers between Level 3 and Level 2 are determined as of the end of the reporting period and principally result from changes in the significance of unobservable inputs used to calculate the credit valuation adjustment.
Three Months Ended September 30, 2017 | Interest Rate |  | Foreign Currency |  | Commodity |  | Total
Balance at July 1 | $ | (195 | ) |  | $ | 239 |  |  | $ | 9 |  |  | $ | 53 |
Total realized and unrealized gains (losses): |  |  |  |  |  |  |
Included in earnings | (5 | ) |  | 12 |  |  | — |  |  | 7 |
Included in other comprehensive income — derivative activity | (2 | ) |  | — |  |  | — |  |  | (2 | )
Settlements | 10 |  |  | (9 | ) |  | (3 | ) |  | (2 | )
Balance at September 30 | $ | (192 | ) |  | $ | 242 |  |  | $ | 6 |  |  | $ | 56 |
Total gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities held at the end of the period | $ | (1 | ) |  | $ | 3 |  |  | $ | — |  |  | $ | 2 |
Three Months Ended September 30, 2016 | Interest Rate |  | Foreign Currency |  | Commodity |  | Total
Balance at July 1 | $ | (421 | ) |  | $ | 271 |  |  | $ | 11 |  |  | $ | (139 | )
Total realized and unrealized gains (losses): |  |  |  |  |  |  |
Included in earnings | (1 | ) |  | 12 |  |  | 1 |  |  | 12 |
Included in other comprehensive income — derivative activity | 6 |  |  | — |  |  | — |  |  | 6 |
Included in other comprehensive income — foreign currency translation activity | — |  |  | (5 | ) |  | — |  |  | (5 | )
Settlements | 17 |  |  | (4 | ) |  | (3 | ) |  | 10 |
Transfers of liabilities into Level 3 | (2 | ) |  | — |  |  | — |  |  | (2 | )
Transfers of liabilities out of Level 3 | 94 |  |  | — |  |  | — |  |  | 94 |
Balance at September 30 | $ | (307 | ) |  | $ | 274 |  |  | $ | 9 |  |  | $ | (24 | )
Total gains for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities held at the end of the period | $ | — |  |  | $ | 8 |  |  | $ | 1 |  |  | $ | 9 |
Nine Months Ended September 30, 2017 | Interest Rate |  | Foreign Currency |  | Commodity |  | Total
Balance at January 1 | $ | (179 | ) |  | $ | 255 |  |  | $ | 5 |  |  | $ | 81 |
Total realized and unrealized gains (losses): |  |  |  |  |  |  |
Included in earnings | (5 | ) |  | 12 |  |  | (1 | ) |  | 6 |
Included in other comprehensive income — derivative activity | (29 | ) |  | — |  |  | — |  |  | (29 | )
Included in regulatory liabilities | — |  |  | — |  |  | 10 |  |  | 10 |
Settlements | 28 |  |  | (25 | ) |  | (8 | ) |  | (5 | )
Transfers of liabilities into Level 3 | (7 | ) |  | — |  |  | — |  |  | (7 | )
Balance at September 30 | $ | (192 | ) |  | $ | 242 |  |  | $ | 6 |  |  | $ | 56 |
Total losses for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities held at the end of the period | $ | — |  |  | $ | (12 | ) |  | $ | — |  |  | $ | (12 | )
Nine Months Ended September 30, 2016 | Interest Rate |  | Foreign Currency |  | Commodity |  | Total
Balance at January 1 | $ | (304 | ) |  | $ | 277 |  |  | $ | 3 |  |  | $ | (24 | )
Total realized and unrealized gains (losses): |  |  |  |  |  |  |
Included in earnings | — |  |  | 30 |  |  | 3 |  |  | 33 |
Included in other comprehensive income — derivative activity | (172 | ) |  | 6 |  |  | — |  |  | (166 | )
Included in other comprehensive income — foreign currency translation activity | (3 | ) |  | (43 | ) |  | — |  |  | (46 | )
Included in regulatory liabilities | — |  |  | — |  |  | 11 |  |  | 11 |
Settlements | 56 |  |  | (8 | ) |  | (8 | ) |  | 40 |
Transfers of liabilities into Level 3 | (2 | ) |  | — |  |  | — |  |  | (2 | )
Transfers of assets out of Level 3 | 118 |  |  | 12 |  |  | — |  |  | 130 |
Balance at September 30 | $ | (307 | ) |  | $ | 274 |  |  | $ | 9 |  |  | $ | (24 | )
Total gains for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities held at the end of the period | $ | 5 |  |  | $ | 25 |  |  | $ | 3 |  |  | $ | 33 |
The following table summarizes the significant unobservable inputs used for Level 3 derivative assets (liabilities) as of September 30, 2017 (in millions, except range amounts):
Type of Derivative |  | Fair Value |  | Unobservable Input |  | Amount or Range (Weighted Average)
Interest rate |  | $ | (192 | ) |  | Subsidiaries’ credit spreads |  | 2.4% to 5.1% (4.7%)
Foreign currency: |  |  |  |  |  |
Argentine Peso |  | 242 |  |  | Argentine Peso to USD currency exchange rate after one year (1) |  | 21.3 to 47.8 (33.8)
Commodity: |  |  |  |  |  |
Other |  | 6 |  |  |  |  |
Total |  | $ | 56 |  |  |  |  |
_____________________________
(1) | During the nine months ended September 30, 2017, the Company began utilizing the interest rate differential approach to construct the remaining portion of the forward curve after one year (beyond the traded points). In previous periods, the Company used the purchasing price parity approach to construct the forward curve.
For interest rate derivatives and foreign currency derivatives, increases (decreases) in the estimates of the Company’s own credit spreads would decrease (increase) the value of the derivatives in a liability position. For foreign currency derivatives, increases (decreases) in the estimate of the above exchange rate would increase (decrease) the value of the derivative. Nonrecurring Measurements When evaluating impairment of long-lived assets and equity method investments, the Company measures fair value using the applicable fair value measurement guidance. Impairment expense is measured by comparing the fair value at the evaluation date to the then-latest available carrying amount. The following table summarizes our major categories of assets and liabilities measured at fair value on a nonrecurring basis and their level within the fair value hierarchy (in millions):
Nine Months Ended September 30, 2017 | Measurement Date |  | Carrying Amount (1) |  | Fair Value |  | Pretax Loss
Assets |  | Level 1 |  | Level 2 |  | Level 3 |
Long-lived assets held and used: (2) |  |  |  |  |  |  |  |  |  |  |
DPL | 02/28/2017 |  | $ | 77 |  |  | $ | — |  |  | $ | — |  |  | $ | 11 |  |  | $ | 66 |
Tait Energy Storage | 02/28/2017 |  | 15 |  |  | — |  |  | — |  |  | 7 |  |  | 8 |
Dispositions and held-for-sale businesses: (3) |  |  |  |  |  |  |  |  |  |  |
Kazakhstan Hydroelectric | 06/30/2017 |  | 190 |  |  | — |  |  | 92 |  |  | — |  |  | 92 |
Kazakhstan CHPs | 03/31/2017 |  | 171 |  |  | — |  |  | 29 |  |  | — |  |  | 94 |
Nine Months Ended September 30, 2016 | Measurement Date |  | Carrying Amount (1) |  | Fair Value |  | Pretax Loss
Assets |  | Level 1 |  | Level 2 |  | Level 3 |
Long-lived assets held and used: (2) |  |  |  |  |  |  |  |  |  |  |
Buffalo Gap I | 08/31/2016 |  | $ | 113 |  |  | $ | — |  |  | $ | — |  |  | $ | 35 |  |  | $ | 78 |
DPL | 06/30/2016 |  | 324 |  |  | — |  |  | — |  |  | 89 |  |  | 235 |
Buffalo Gap II | 03/31/2016 |  | 251 |  |  | — |  |  | — |  |  | 92 |  |  | 159 |
Discontinued operations and held-for-sale businesses: (3) |  |  |  |  |  |  |  |  |  |  |
Sul | 06/30/2016 |  | 1,581 |  |  | — |  |  | 470 |  |  | — |  |  | 783 |
_____________________________
(1) | Represents the carrying values at the dates of measurement, before fair value adjustment.
(2) | See Note 14—Asset Impairment Expense for further information.
(3) | Per the Company’s policy, pretax loss is limited to the impairment of long-lived assets. Any additional loss will be recognized on completion of the sale. See Note 16—Held-for-Sale Businesses and Dispositions for further information.
The following table summarizes the significant unobservable inputs used in the Level 3 measurement on a nonrecurring basis during the nine months ended September 30, 2017 (in millions, except range amounts):
| Fair Value |  | Valuation Technique |  | Unobservable Input |  | Range (Weighted Average)
Long-lived assets held and used: |  |  |  |  |  |  |
DPL | $ | 11 |  |  | Discounted cash flow |  | Pretax operating margin (through remaining life) |  | 10% to 22% (15%)
|  |  |  |  | Weighted average cost of capital |  | 7%
Tait Energy Storage | 7 |  |  | Discounted cash flow |  | Annual pretax operating margin |  | 46% to 85% (80%)
|  |  |  |  | Weighted average cost of capital |  | 9%
Financial Instruments not Measured at Fair Value in the Condensed Consolidated Balance Sheets The following table presents (in millions) the carrying amount, fair value and fair value hierarchy of the Company’s financial assets and liabilities that are not measured at fair value in the Condensed Consolidated Balance Sheets as of September 30, 2017 and December 31, 2016, but for which fair value is disclosed:
|  | September 30, 2017
|  | Carrying Amount |  | Fair Value
|  | Total |  | Level 1 |  | Level 2 |  | Level 3
Assets: | Accounts receivable — noncurrent (1) | $ | 200 |  |  | $ | 262 |  |  | $ | — |  |  | $ | 6 |  |  | $ | 256 |
Liabilities: | Non-recourse debt | 17,079 |  |  | 17,706 |  |  | — |  |  | 15,479 |  |  | 2,227 |
| Recourse debt | 4,958 |  |  | 5,266 |  |  | — |  |  | 5,266 |  |  | — |
|  | December 31, 2016
|  | Carrying Amount |  | Fair Value
|  | Total |  | Level 1 |  | Level 2 |  | Level 3
Assets: | Accounts receivable — noncurrent (1) | $ | 264 |  |  | $ | 350 |  |  | $ | — |  |  | $ | 20 |  |  | $ | 330 |
Liabilities: | Non-recourse debt | 15,792 |  |  | 16,188 |  |  | — |  |  | 15,120 |  |  | 1,068 |
| Recourse debt | 4,671 |  |  | 4,899 |  |  | — |  |  | 4,899 |  |  | — |
_____________________________
(1) | These amounts primarily relate to amounts due from CAMMESA, the administrator of the wholesale electricity market in Argentina, and are included in Other noncurrent assets in the accompanying Condensed Consolidated Balance Sheets. The fair value and carrying amount of these receivables exclude VAT of $38 million and $24 million as of September 30, 2017 and December 31, 2016, respectively.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -URI http://asc.fasb.org/topic&trid=2155941 + Details
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