Goodwill And Other Intangibles (Changes In The Carrying Amount Of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011
Goodwill [Roll Forward]
Balance as of January 1, as reported	$ 6,562		$ 6,420
Goodwill acquired	113		76
Other adjustments	(32)	[1]	99	[1]
Balance at March 31	$ 6,643		$ 6,595

[1] Primarily foreign exchange.