Goodwill and Intangible Assets (Details 2) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Goodwill and Intangible Assets
Intangible assets (excluding goodwill) acquired through business combinations during the period	$ 261		$ 261
Acquired intangible assets disclosures
Total gross carrying amount	2,923		2,923		2,567
Total accumulated amortization	(1,028)		(1,028)		(872)
Total finite-lived intangible assets - net	1,895		1,895		1,695
Non-amortizable intangible assets (tradenames)	130		130		125
Total intangible assets - net	2,025		2,025		1,820
Amortization expense for acquired intangible assets	63	43	117	86
Expected amortization expense for acquired intangible assets recorded as of balance sheet date
Last 2 Quarters 2011			115
2012			226
2013			215
2014			191
2015			178
2016			165
After 2016			805
Patents
Acquired intangible assets disclosures
Total gross carrying amount	572		572		551
Total accumulated amortization	(370)		(370)		(345)
Other amortizable intangible assets (primarily tradenames and customer related intangibles)
Acquired intangible assets disclosures
Total gross carrying amount	2,351		2,351		2,016
Total accumulated amortization	$ (658)		$ (658)		$ (527)