Acquired Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 989		$ 989
Finite-Lived Intangible Assets, Accumulated Amortization	(688)		(663)
Finite-Lived Intangible Assets, Net	301		326
Acquired finite-lived intangible asset amortization expense	25	25
Total Acquired Intangible Assets
Total Intangible assets, Gross Carrying Amount	1,021		1,021
Total intangible assets, Net	333		358
Estimated amortization expense of acquired finite-lived intangible asset
Future Amortization Expense, Remainder of Fiscal Year	66
Future Amortization Expense, Year One	72
Future Amortization Expense, Year Two	61
Future Amortization Expense, Year Three	45
Future Amortization Expense, Year Four	27
Future Amortization Expense, Year Five	13
Thereafter	17
Total	301
Vyvx Trade Name
Indefinite-Lived Intangible Assets:
Indefinite-Lived Intangible Assets, Net	32		32
Customer Contracts and Relationships
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	776		776
Finite-Lived Intangible Assets, Accumulated Amortization	(588)		(571)
Finite-Lived Intangible Assets, Net	188		205
Acquired finite-lived intangible assets, amortization period (in years)	2.6
Trademarks
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	55		55
Finite-Lived Intangible Assets, Accumulated Amortization	(7)		(3)
Finite-Lived Intangible Assets, Net	48		52
Acquired finite-lived intangible assets, amortization period (in years)	3.5
Patents and Developed Technology
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	158		158
Finite-Lived Intangible Assets, Accumulated Amortization	(93)		(89)
Finite-Lived Intangible Assets, Net	$ 65		$ 69
Acquired finite-lived intangible assets, amortization period (in years)	4.7