Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Finite-lived intangible assets:
Total finite-lived intangible assets, gross carrying amount	$ 5,994	$ 5,446
Total finite-lived intangible assets, accumulated amortization	(3,828)	(3,537)
Total finite-lived intangible assets, net	2,166	1,909
Indefinite-lived intangible assets:
Total indefinite-lived intangible assets, gross carrying value	1,514	675
Total identifiable intangible assets, gross carrying value	7,508	6,121
Total identifiable intangible assets, accumulated amortization	(3,828)	(3,537)
Total identifiable intangible assets, net	3,680	2,584
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	(1,955)	(1,811)
Total finite-lived intangible assets, net	917	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	(917)	(850)
Total finite-lived intangible assets, net	431	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	(129)	(120)
Total finite-lived intangible assets, net	61	70
Acquired Research and Development technology rights [Member]
Finite-lived intangible assets:
Total finite-lived intangible assets, gross carrying amount	687	350
Total finite-lived intangible assets, accumulated amortization	(370)	(350)
Total finite-lived intangible assets, net	317	0
Other acquired intangible assets [Member]
Finite-lived intangible assets:
Total finite-lived intangible assets, gross carrying amount	897	686
Total finite-lived intangible assets, accumulated amortization	(457)	(406)
Total finite-lived intangible assets, net	440	280
In-process Research and Development [Member]
Indefinite-lived intangible assets:
Total indefinite-lived intangible assets, gross carrying value	1,358	675
Contract Assets [Member]
Indefinite-lived intangible assets:
Total indefinite-lived intangible assets, gross carrying value	$ 156	$ 0