Acquired Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 999		$ 999		$ 989
Finite-Lived Intangible Assets, Accumulated Amortization	(808)		(808)		(753)
Finite-Lived Intangible Assets, Net	191		191		236
Acquired finite-lived intangible asset amortization expense	18	21	54	71
Indefinite-Lived Intangible Assets:
Total identifiable acquisition-related intangible assets, Gross Carrying Amount	1,031		1,031		1,021
Total identifiable acquisition-related intangible assets, Net	223		223		268
Estimated amortization expense of finite-lived acquisition-related intangible assets
2013 (remaining three months)	18		18
2014	64		64
2015	48		48
2016	31		31
2017	14		14
2018	13		13
Thereafter	3		3
Finite-Lived Intangible Assets, Net	191		191		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	786		786		776
Finite-Lived Intangible Assets, Accumulated Amortization	(666)		(666)		(633)
Finite-Lived Intangible Assets, Net	120		120		143
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)	2 years 6 months
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	120		120		143
Trademarks
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	55		55		55
Finite-Lived Intangible Assets, Accumulated Amortization	(28)		(28)		(17)
Finite-Lived Intangible Assets, Net	27		27		38
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)	2 years
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	27		27		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	(114)		(114)		(103)
Finite-Lived Intangible Assets, Net	44		44		55
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)	3 years 3 months
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	$ 44		$ 44		$ 55