Fair Value (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosure Tables [Abstract]

Fair value hierarchy for recurring measurements table

			March 31, 2013								December 31, 2012
			Level 1		Level 2		Level 3			Total	Level 1		Level 2		Level 3			Total
Assets			(in millions)
AVAILABLE-FOR-SALE:(1)
	Debt securities:
		Unsecured debentures	$	-	$	615	$	-	$	615	$	-	$	448	$	-	$	448
		Certificates of deposit		-		137		-		137		-		143		-		143
		Government debt securities		-		28		-		28		-		34		-		34
		Subtotal		-		780		-		780		-		625		-		625
	Equity securities:
		Mutual funds		-		57		-		57		-		56		-		56
		Subtotal		-		57		-		57		-		56		-		56
	Total available-for-sale			-		837		-		837		-		681		-		681
TRADING:
	Equity securities:
		Mutual funds		12		-		-		12		12		-		-		12
	Total trading			12		-		-		12		12		-		-		12
DERIVATIVES:
	Interest rate derivatives			-		2		-		2		-	$	2	$	-		2
	Cross currency derivatives			-		8		-		8		-		6		-		6
	Foreign currency derivatives			-		6		82		88		-		2		79		81
	Commodity derivatives			-		6		1		7		-		8		3		11
		Total derivatives		-		22		83		105		-		18		82		100
TOTAL ASSETS			$	12	$	859	$	83	$	954	$	12	$	699	$	82	$	793
Liabilities
DERIVATIVES:
	Interest rate derivatives		$	-	$	469	$	72	$	541	$	-	$	153	$	412	$	565
	Cross currency derivatives			-		3		-		3		-		6		-		6
	Foreign currency derivatives			-		7		11		18		-		7		7		14
	Commodity derivatives			-		24		69		93		-		13		59		72
		Total derivatives		-		503		152		655		-		179		478		657
TOTAL LIABILITIES			$	-	$	503	$	152	$	655	$	-	$	179	$	478	$	657

Derivatives Level 3 Rollforward Table

						Three Months Ended March 31, 2013
						Interest		Foreign
						Rate		Currency		Commodity		Total
			(in millions)
Balance at January 1						$	(412)	$	73	$	(57)	$	(396)
	Total gains (losses) (realized and unrealized):
		Included in earnings					-		(1)		(10)		(11)
		Included in other comprehensive income					(17)		-		-		(17)
		Included in regulatory (assets) liabilities					-		-		(1)		(1)
	Settlements						23		(1)		-		22
	Transfers of (assets) liabilities out of Level 3						334		-		-		334
Balance at March 31						$	(72)	$	71	$	(68)	$	(69)
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)	$	(10)	$	(12)
				Three Months Ended March 31, 2012
				Interest		Cross		Foreign
				Rate		Currency		Currency		Commodity		Total
			(in millions)
Balance at January 1				$	(128)	$	(18)	$	51	$	(53)	$	(148)
	Total gains (losses) (realized and unrealized):
		Included in earnings			(1)		-		(2)		8		5
		Included in other comprehensive income			1		14		-		-		15
		Included in regulatory (assets) liabilities			-		-		-		-		-
	Settlements				6		4		(1)		(1)		8
	Transfers of assets (liabilities) into Level 3				(28)		-		-		-		(28)
	Transfers of (assets) liabilities out of Level 3				26		-		-		-		26
Balance at March 31				$	(124)	$	-	$	48	$	(46)	$	(122)
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			$	-	$	-	$	(3)	$	9	$	6

Signficant unobservable inputs, recurring

						Amount or Range
Type of Derivative			Fair Value	Unobservable Input		(Weighted Average)
		(in millions)
Interest rate		$	(72)	Subsidiaries' credit spreads		2.15% - 9.03% (4.35%)
Foreign currency:
	Embedded derivative - Argentine Peso		70	Argentine Peso to U.S. Dollar
					currency exchange rate after 3 years	14.4 - 21.2 (17.7)
Commodity:
	Embedded derivative - Aluminum		(65)	Market price of power for
					customer in Cameroon (per KWh)	$0.06 - $0.14 ($0.12)
Other			(2)
Total		$	(69)

Fair value hierarchy for nonrecurring measurements table

			Three Months Ended March 31, 2013
			Carrying		Fair Value						Gross
			Amount		Level 1		Level 2		Level 3		Loss
Assets			(in millions)
	Long-lived assets held and used:(1)
		Beaver Valley	$	61	$	-	$	-	$	15	$	46
	Long-lived assets held for sale:(1)
		Wind turbines		25		-		-		25		-
	Discontinued operations and held for sale businesses:(2)
		Ukraine utilities		143		-		109		-		38
	Goodwill
			Three Months Ended March 31, 2012
			Carrying		Fair Value						Gross
			Amount		Level 1		Level 2		Level 3		Loss
Assets			(in millions)
	Long-lived assets held and used:(1)
		Kelanitissa		22		-		-		17		5
	Equity method investments(3)			204		-		155		-		49

Significant unobservable inputs, nonrecurring

		Fair Value		Valuation Technique	Unobservable Input		Range (Weighted Average)
		(in millions)					($ in millions)
Long-lived assets held and used:
	Beaver Valley	$	15	Discounted
				cash flow	Annual revenue growth		3% to 45% (19%)
					Annual pretax operating margin		-42% to 41% (25%)
					Weighted average cost of capital		7%
Long-lived assets held for sale:
	Wind turbines		25	Market
				Approach	Indicative offer prices	$	$12 to $38 (25)
Total		$	40

Financial instruments not measured at fair value in the condensed consolidated balance sheets

		Carrying		Fair Value
March 31, 2013		Amount			Total	Level 1		Level 2		Level 3
		(in millions)
Assets
	Accounts receivable - noncurrent(1)	$	295	$	167	$	-	$	-	$	167
Liabilities
	Non-recourse debt		15,923		16,416		-		14,212		2,204
	Recourse debt		5,961		6,724		-		6,724		-
December 31, 2012
Assets
	Accounts receivable - noncurrent(1)	$	304	$	188	$	-	$	-	$	188
Liabilities
	Non-recourse debt		15,383		16,110		-		13,811		2,299
	Recourse debt		5,962		6,628		-		6,628		-