Goodwill And Other Intangibles (Changes In The Carrying Amount Of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Goodwill [Roll Forward]
Balance as of January 1, as reported	$ 6,562		$ 6,420
Goodwill acquired	89		68
Other adjustments	24	[1]	69	[1]
Balance at March 31	$ 6,675		$ 6,557

[1] Primarily foreign exchange.