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:



	June 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	$	—	$	271	$	—	$	271	$	—	$	360	$	—	$	360
Certificates of deposit	—		407		—		407		—		372		—		372
Government debt securities	—		—		—		—		—		9		—		9
Subtotal	—		678		—		678		—		741		—		741
Equity securities:
Mutual funds	—		51		—		51		—		49		—		49
Subtotal	—		51		—		51		—		49		—		49
Total available for sale	—		729		—		729		—		790		—		790
TRADING:
Equity securities:
Mutual funds	19		—		—		19		16		—		—		16
Total trading	19		—		—		19		16		—		—		16
DERIVATIVES:
Interest rate derivatives	—		13		—		13		—		18		—		18
Cross-currency derivatives	—		5		—		5		—		4		—		4
Foreign currency derivatives	—		31		239		270		—		54		255		309
Commodity derivatives	—		42		11		53		—		38		7		45
Total derivatives — assets	—		91		250		341		—		114		262		376
TOTAL ASSETS	$	19	$	820	$	250	$	1,089	$	16	$	904	$	262	$	1,182
Liabilities
DERIVATIVES:
Interest rate derivatives	$	—	$	106	$	195	$	301	$	—	$	121	$	179	$	300
Cross-currency derivatives	—		14		—		14		—		18		—		18
Foreign currency derivatives	—		29		—		29		—		64		—		64
Commodity derivatives	—		17		2		19		—		40		2		42
Total derivatives — liabilities	—		166		197		363		—		243		181		424
TOTAL LIABILITIES	$	—	$	166	$	197	$	363	$	—	$	243	$	181	$	424

As of June 30, 2017, all AFS debt securities had stated maturities within one year. For the three and six months ended June 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 June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
Gross proceeds from sale of AFS securities	$	1,041	$	1,044	$	1,962	$	2,404

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 six months ended June 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 June 30, 2017	Interest Rate			Foreign Currency			Commodity			Total
Balance at April 1	$	(183	)	$	231		$	2		$	50
Total realized and unrealized gains (losses):
Included in earnings	—			16			(1		)	15
Included in other comprehensive income — derivative activity	(17		)	—			—			(17		)
Included in regulatory (assets) liabilities	—			—			10			10
Settlements	9			(8		)	(2		)	(1		)
Transfers of liabilities into Level 3	(4		)	—			—			(4		)
Balance at June 30	$	(195	)	$	239		$	9		$	53
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		$	—		$	8



Three Months Ended June 30, 2016	Interest Rate			Foreign Currency			Commodity			Total
Balance at April 1	$	(416	)	$	290		$	—		$	(126	)
Total realized and unrealized gains (losses):
Included in earnings	—			(31		)	2			(29		)
Included in other comprehensive income — derivative activity	(80		)	—			—			(80		)
Included in other comprehensive income — foreign currency translation activity	1			(4		)	—			(3		)
Included in regulatory (assets) liabilities	—			—			11			11
Settlements	21			(3		)	(2		)	16
Transfers of liabilities into Level 3	(17		)	—			—			(17		)
Transfers of liabilities out of Level 3	70			19			—			89
Balance at June 30	$	(421	)	$	271		$	11		$	(139	)
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		$	(28	)	$	2		$	(25	)



Six Months Ended June 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	—			—			(1		)	(1		)
Included in other comprehensive income — derivative activity	(28		)	—			—			(28		)
Included in regulatory (assets) liabilities	—			—			10			10
Settlements	19			(16		)	(5		)	(2		)
Transfers of liabilities into Level 3	(7		)	—			—			(7		)
Balance at June 30	$	(195	)	$	239		$	9		$	53
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	$	2		$	(16	)	$	—		$	(14	)



Six Months Ended June 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	2			16			2			20
Included in other comprehensive income — derivative activity	(174		)	5			—			(169		)
Included in other comprehensive income — foreign currency translation activity	(1		)	(38		)	—			(39		)
Included in regulatory (assets) liabilities	—			—			11			11
Settlements	37			(5		)	(5		)	27
Transfers of liabilities into Level 3	(51		)	—			—			(51		)
Transfers of assets out of Level 3	70			16			—			86
Balance at June 30	$	(421	)	$	271		$	11		$	(139	)
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		$	17		$	2		$	24

The following table summarizes the significant unobservable inputs used for Level 3 derivative assets (liabilities) as of June 30, 2017 (in millions, except range amounts):



Type of Derivative	Fair Value			Unobservable Input	Amount or Range (Weighted Average)
Interest rate	$	(195	)	Subsidiaries’ credit spreads	2.4% to 5.1% (4.8%)
Foreign currency:
Argentine Peso	239			Argentine Peso to USD currency exchange rate after one year ⁽¹⁾	19.7 to 43.1 (30.9)
Commodity:
Other	9
Total	$	53

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⁽¹⁾	During the three months ended June 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.

Changes in the above significant unobservable inputs that lead to a significant and unusual impact to current period earnings are disclosed to the Financial Audit Committee. 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):



Six Months Ended June 30, 2017	Measurement Date	Carrying Amount (1)		Fair Value						Pretax Loss
Assets	Measurement Date	Carrying Amount (1)		Level 1		Level 2		Level 3		Pretax Loss
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		—		90
Kazakhstan CHPs	03/31/2017	171		—		29		—		94



Six Months Ended June 30, 2016	Measurement Date	Carrying Amount (1)		Fair Value						Pretax Loss
Assets	Measurement Date	Carrying Amount (1)		Level 1		Level 2		Level 3		Pretax Loss
Long-lived assets held and used: ⁽²⁾
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 six months ended June 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 June 30, 2017 and December 31, 2016, but for which fair value is disclosed:



		June 30, 2017
		Carrying Amount		Fair Value
		Carrying Amount		Total		Level 1		Level 2		Level 3
Assets:	Accounts receivable — noncurrent ⁽¹⁾	$	244	$	312	$	—	$	19	$	293
Liabilities:	Non-recourse debt	16,387		16,905		—		14,942		1,963
	Recourse debt	4,384		4,687		—		4,687		—



		December 31, 2016
		Carrying Amount		Fair Value
		Carrying Amount		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		—

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⁽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 $35 million and $24 million as of June 30, 2017 and December 31, 2016, respectively.