Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Finite-lived intangible assets:
Total finite-lived intangible assets, gross carrying amount	$ 5,794	$ 5,446
Total finite-lived intangible assets, accumulated amortization	(3,628)	(3,537)
Total finite-lived intangible assets, net	2,166	1,909
Indefinite-lived intangible assets:
Total indefinite-lived intangible assets, gross carrying value	1,279	675
Total identifiable intangible assets, gross carrying value	7,073	6,121
Total identifiable intangible assets, accumulated amortization	(3,628)	(3,537)
Total identifiable intangible assets, net	3,445	2,584
In-process Research and Development [Member]
Indefinite-lived intangible assets:
Total indefinite-lived intangible assets, gross carrying value	1,111	675
Contract Assets [Member]
Indefinite-lived intangible assets:
Total indefinite-lived intangible assets, gross carrying value	168	0
Acquired product technology rights - Developed product technology [Member]
Finite-lived intangible assets:
Total finite-lived intangible assets, gross carrying amount	2,872	2,872
Total finite-lived intangible assets, accumulated amortization	(1,859)	(1,811)
Total finite-lived intangible assets, net	1,013	1,061
Acquired product technology rights - Core technology [Member]
Finite-lived intangible assets:
Total finite-lived intangible assets, gross carrying amount	1,348	1,348
Total finite-lived intangible assets, accumulated amortization	(872)	(850)
Total finite-lived intangible assets, net	476	498
Acquired product technology rights - Trade name [Member]
Finite-lived intangible assets:
Total finite-lived intangible assets, gross carrying amount	190	190
Total finite-lived intangible assets, accumulated amortization	(123)	(120)
Total finite-lived intangible assets, net	67	70
Acquired Research and Development technology rights [Member]
Finite-lived intangible assets:
Total finite-lived intangible assets, gross carrying amount	697	350
Total finite-lived intangible assets, accumulated amortization	(353)	(350)
Total finite-lived intangible assets, net	344	0
Other acquired intangible assets [Member]
Finite-lived intangible assets:
Total finite-lived intangible assets, gross carrying amount	687	686
Total finite-lived intangible assets, accumulated amortization	(421)	(406)
Total finite-lived intangible assets, net	$ 266	$ 280