Goodwill And Other Intangibles (Changes In The Carrying Amount Of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012
Goodwill [Roll Forward]
Balance as of January 1, as reported	$ 6,792		$ 6,562
Goodwill acquired	93		126
Other adjustments(a)	(20)	[1]	(9)	[1]
Balance at September 30,	$ 6,865		$ 6,679

[1] Primarily reflects the impact of foreign exchange in each period.