SCHEDULE II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2013

Valuation And Qualifying Accounts [Abstract]

SCHEDULE II - Valuation and Qualifying Accounts

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

	Years Ended December 31,
	2013			2012			2011
	(in millions)
Deferred Income Tax Valuation Allowance
Balance at January 1	$	1,626		$	977		$	435
Additions to deferred income tax expense		1,202			762			723
Reduction of deferred income tax expense		(104	)		(103	)		(149	)
Valuation release to equity		—			(10	)		(32	)
Balance at December 31	$	2,724		$	1,626		$	977