Income Taxes (Schedule Of Components Of Income Tax Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Federal	$ 49	$ (885)	$ 75
State	54	15	39
Non-U.S.	295	156	157
Total current expense (benefit)	398	(714)	271
Federal	134	745	383
State	8	141	28
Non-U.S.	76	358	40
Total deferred expense (benefit)	218	1,244	451
Total income tax expense	$ 616	$ 530	$ 722