Goodwill And Other Intangibles (Changes In The Carrying Amount Of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
Goodwill [Roll Forward]
Balance as of January 1, as reported	$ 6,792		$ 6,562
Goodwill acquired	62		113
Other adjustments	(50)	[1]	(32)	[1]
Balance at June 30, 2013	$ 6,804		$ 6,643

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