Goodwill and Intangible Assets (Acquired Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Acquired intangible assets disclosures
Total gross carrying amount	$ 2,835	$ 2,884
Total accumulated amortization	(1,114)	(1,091)
Total finite-lived intangible assets - net	1,721	1,793
Non-amortizable intangible assets (tradenames)	121	123
Total intangible assets - net	1,842	1,916
Patents
Acquired intangible assets disclosures
Total gross carrying amount	555	561
Total accumulated amortization	(385)	(374)
Other amortizable intangible assets (primarily tradenames and customer related intangibles)
Acquired intangible assets disclosures
Total gross carrying amount	2,280	2,323
Total accumulated amortization	$ (729)	$ (717)