Acquired Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 989		$ 989		$ 989
Finite-Lived Intangible Assets, Accumulated Amortization	(789)		(789)		(753)
Finite-Lived Intangible Assets, Net	200		200		236
Acquired finite-lived intangible asset amortization expense	18	25	36	50
Indefinite-Lived Intangible Assets:
Total identifiable acquisition-related intangible assets, Gross Carrying Amount	1,021		1,021		1,021
Total identifiable acquisition-related intangible assets, Net	232		232		268
Estimated amortization expense of finite-lived acquisition-related intangible assets
2013 (remaining six months)	37		37
2014	61		61
2015	45		45
2016	28		28
2017	13		13
2018	13		13
Thereafter	3		3
Finite-Lived Intangible Assets, Net	200		200		236
Vyvx Trade Name
Indefinite-Lived Intangible Assets:
Indefinite-Lived Intangible Assets	32		32		32
Customer Contracts And Relationships
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	776		776		776
Finite-Lived Intangible Assets, Accumulated Amortization	(655)		(655)		(633)
Finite-Lived Intangible Assets, Net	121		121		143
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)	2 years 8 months
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	121		121		143
Trademarks
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	55		55		55
Finite-Lived Intangible Assets, Accumulated Amortization	(24)		(24)		(17)
Finite-Lived Intangible Assets, Net	31		31		38
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)	2 years 3 months
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	31		31		38
Patents and Developed Technology
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	158		158		158
Finite-Lived Intangible Assets, Accumulated Amortization	(110)		(110)		(103)
Finite-Lived Intangible Assets, Net	48		48		55
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)	3 years 6 months
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	$ 48		$ 48		$ 55