Income Taxes (Schedule Of Current And Deferred Provision For Income Tax) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Current, Federal	$ (4)	$ (2)
Current, State and municipal	3	6	1
Current, Foreign	322	289	218
Deferred, Federal	185	167	(7)
Deferred, State and municipal	(8)	14	22
Deferred, Foreign	(109)	(66)	53
Provision (benefit) for income taxes	$ 389	$ 408	$ 287