Income Taxes (Schedule of Components of Income Tax Expense (Benefit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Current tax provision (benefit), U.S. federal	$ (697)	$ 14	$ (78)
Current tax provision (benefit), U.S. state and local	(95)	11	(19)
Current tax provision (benefit), Non-U.S.	123	102	91
Current tax provision (benefit), total	(669)	127	(6)
Deferred tax provision (benefit), U.S. federal	186	226	207
Deferred tax provision (benefit), U.S. state and local	(21)	6	46
Deferred tax provision (benefit), Non-U.S.	(19)	(28)	64
Deferred income tax provision (benefit), net	146	204	317
Income tax provision	$ (523)	$ 331	$ 311