Goodwill and Other Intangible Assets (Amortization Expense on Existing Intangible Assets) (Details) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010
Goodwill and Other Intangible Assets [Abstract]
Amortization expense	$ 406	[1]	$ 324	[1]
Future amortization expense to be recognized during remainder of 2011	67	[1]
Future amortization expense to be recognized during remainder of 2012	250	[1]
Future amortization expense to be recognized during remainder of 2013	196	[1]
Future amortization expense to be recognized during remainder of 2014	198	[1]
Future amortization expense to be recognized during remainder of 2015	184	[1]
Future amortization expense to be recognized during remainder of 2016	$ 165	[1]

[1] Includes the impact of impairment charges.