Income Tax (Provision for Income Tax from Continuing Operations) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:
Federal	$ 85	$ (29)	$ (200)
State and local	2	6	(1)
Foreign	422	846	614
Subtotal	509	823	413
Deferred:
Federal	(250)	(244)	2,241
State and local	(11)	(1)	(3)
Foreign	413	(450)	142
Subtotal	152	(695)	2,380
Current and Deferred:
Provision for income tax expense (benefit)	$ 661	$ 128	$ 2,793