Goodwill & Other Intangible Assets (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011 years	Dec. 31, 2010	Dec. 31, 2009
Goodwill & Other Intangible Assets [Abstract]
Reporting units for goodwill impairment testing	28
Carrying value of goodwill, minimum	$ 7,000,000
Carrying value of goodwill, maximum	3,700,000,000
Total intangible amortization expense	284,000,000	199,000,000	156,000,000
Future amortization expense, year one	324,000,000
Future amortization expense, year two	290,000,000
Future amortization expense, year three	261,000,000
Future amortization expense, year four	235,000,000
Future amortization expense, year five	$ 211,000,000
Finite-lived intangible assets, weighted-average life, years	15