Acquired Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 998		$ 998		$ 999
Finite-Lived Intangible Assets, Accumulated Amortization	(876)		(876)		(826)
Finite-Lived Intangible Assets, Net	122		122		173
Acquired finite-lived intangible asset amortization expense	14	18	50	54
Indefinite-Lived Intangible Assets:
Total identifiable acquisition-related intangible assets, Gross Carrying Amount	1,030		1,030		1,031
Total identifiable acquisition-related intangible assets, Net	154		154		205
Estimated amortization expense of finite-lived acquisition-related intangible assets
2013 (remaining three months)	13		13
2014	48		48
2015	30		30
2016	15		15
2017	13		13
2018	3		3
Finite-Lived Intangible Assets, Net	122		122		173
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	785		785		786
Finite-Lived Intangible Assets, Accumulated Amortization	(708)		(708)		(678)
Finite-Lived Intangible Assets, Net	77		77		108
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)	3 years 3 months 18 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	77		77		108
Trademarks
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	55		55		55
Finite-Lived Intangible Assets, Accumulated Amortization	(41)		(41)		(31)
Finite-Lived Intangible Assets, Net	14		14		24
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)	2 years 2 months 12 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	14		14		24
Patents and Developed Technology
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	158		158		158
Finite-Lived Intangible Assets, Accumulated Amortization	(127)		(127)		(117)
Finite-Lived Intangible Assets, Net	31		31		41
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)	1 year
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	$ 31		$ 31		$ 41