Goodwill and Intangible Assets (Details 2) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Goodwill and Intangible Assets
Intangible assets (excluding goodwill) acquired through business combinations during the period	$ 284		$ 284
Acquired intangible assets disclosures
Total gross carrying amount	2,897		2,897		2,567
Total accumulated amortization	(1,071)		(1,071)		(872)
Total finite-lived intangible assets - net	1,826		1,826		1,695
Non-amortizable intangible assets (tradenames)	126		126		125
Total intangible assets - net	1,952		1,952		1,820
Amortization expense for acquired intangible assets	59	44	176	130
Expected amortization expense for acquired intangible assets recorded as of balance sheet date
Last Quarter 2011			59
2012			223
2013			212
2014			189
2015			177
2016			164
After 2016			802
Patents
Acquired intangible assets disclosures
Total gross carrying amount	568		568		551
Total accumulated amortization	(371)		(371)		(345)
Other amortizable intangible assets (primarily tradenames and customer related intangibles)
Acquired intangible assets disclosures
Total gross carrying amount	2,329		2,329		2,016
Total accumulated amortization	$ (700)		$ (700)		$ (527)