Fair Value (Tables)

3 Months Ended

Jun. 30, 2011

Fair Value Disclosure Tables Abstract

Fair Value Summary Table

			June 30, 2011				December 31, 2010
			Carrying		Fair		Carrying		Fair
			Amount		Value		Amount		Value
			(in millions)
Assets
	Marketable securities		$	1,271	$	1,271	$	1,772	$	1,772
	Derivatives			155		155		124		124
		Total assets	$	1,426	$	1,426	$	1,896	$	1,896
Liabilities
	Debt		$	21,435	$	22,179	$	19,551	$	20,137
	Derivatives			440		440		423		423
		Total liabilities	$	21,875	$	22,619	$	19,974	$	20,560

Fair Value Hierarchy For Recurring Measurements Table

			Quoted Market		Significant
			Prices in Active		Other		Significant
			Market for		Observable		Unobservable		Total
			Identical Assets		Inputs		Inputs		June 30,
			(Level 1)		(Level 2)		(Level 3)		2011
			(in millions)
Assets
	Available-for-sale securities		$	2	$	1,217	$	40	$	1,259
	Trading securities			12		-		-		12
	Derivatives			-		72		83		155
		Total assets	$	14	$	1,289	$	123	$	1,426
Liabilities
	Derivatives		$	-	$	367	$	73	$	440
		Total liabilities	$	-	$	367	$	73	$	440
			Quoted Market		Significant
			Prices in Active		Other		Significant
			Market for		Observable		Unobservable		Total
			Identical Assets		Inputs		Inputs		December 31,
			(Level 1)		(Level 2)		(Level 3)		2010
			(in millions)
Assets
	Available-for-sale securities		$	8	$	1,712	$	42	$	1,762
	Trading securities			10		-		-		10
	Derivatives			-		63		61		124
		Total assets	$	18	$	1,775	$	103	$	1,896
Liabilities
	Derivatives		$	-	$	411	$	12	$	423
		Total liabilities	$	-	$	411	$	12	$	423

Derivatives Level 3 Rollforward Table

				Three Months Ended June 30, 2011
				Interest		Cross		Foreign		Commodity
				Rate		Currency		Currency		and Other		Total
			(in millions)
Balance at April 1				$	(7)	$	5	$	23	$	24	$	45
	Total gains (losses) (realized and unrealized):
		Included in earnings (1)			-		(2)		18		(16)		-
		Included in other comprehensive income			(12)		8		-		-		(4)
		Included in regulatory assets			-		-		-		7		7
	Settlements				1		4		(1)		-		4
	Transfers of assets (liabilities) into Level 3 (2)				(58)		-		-		-		(58)
	Transfers of (assets) liabilities out of Level 3 (2)				16		-		(2)		2		16
Balance at June 30				$	(60)	$	15	$	38	$	17	$	10
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)	$	15	$	(7)	$	6
				Three Months Ended June 30, 2010
				Interest		Cross		Foreign		Commodity
				Rate		Currency		Currency		and Other		Total
			(in millions)
Balance at April 1				$	(18)	$	(7)	$	(1)	$	19	$	(7)
	Total gains (losses) (realized and unrealized):
		Included in earnings (1)			1		(1)		22		1		23
		Included in other comprehensive income			(12)		(28)		-		-		(40)
		Included in regulatory assets			(2)		-		-		4		2
	Settlements				2		2		-		(5)		(1)
	Transfers of assets (liabilities) into Level 3 (2)				(209)		-		(3)		-		(212)
	Transfers of (assets) liabilities out of Level 3 (2)				12		-		-		-		12
Balance at June 30				$	(226)	$	(34)	$	18	$	19	$	(223)
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)	$	(1)	$	20	$	(6)	$	12

			Three Months				Six Months
			Ended June 30,				Ended June 30,
			2011		2010		2011		2010
		(in millions)
Balance at beginning of period(1)			$	40	$	42	$	42	$	42
	Settlements			-		-		(2)		-
Balance at June 30			$	40	$	42	$	40	$	42
Total gains/(losses) for the period included in
	earnings attributable to the change in unrealized
	gains/losses relating to assets held at the
	end of the period		$	-	$	-	$	-	$	-