Debt and Financing Costs (Tables)

3 Months Ended

Mar. 31, 2012

Debt and Financing Costs [Abstract]

Non-recurring fair value measurement

	March 31, 2012				December 31, 2011
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(In millions)
Money market lines of credit	$	29	$	29	$	31	$	31
Commercial paper		659		659		—		—
Notes and debentures		7,185		8,312		7,185		8,673
Total Debt	$	7,873	$	9,000	$	7,216	$	8,704

Financing Costs, Net

	For the Quarter  Ended March 31,
	2012			2011
	(In millions)
Interest expense	$	108		$	108
Amortization of deferred loan costs		1			1
Capitalized interest		(66	)		(60	)
Interest income		(3	)		(4	)
Financing costs, net	$	40		$	45