Acquired Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 999		$ 999		$ 999
Finite-Lived Intangible Assets, Accumulated Amortization	(862)		(862)		(826)
Finite-Lived Intangible Assets, Net	137		137		173
Acquired finite-lived intangible asset amortization expense	17	18	36	36
Indefinite-Lived Intangible Assets:
Total identifiable acquisition-related intangible assets, Gross Carrying Amount	1,031		1,031		1,031
Total identifiable acquisition-related intangible assets, Net	169		169		205
Estimated amortization expense of finite-lived acquisition-related intangible assets
2013 (remaining three months)	27		27
2014	48		48
2015	31		31
2016	15		15
2017	13		13
2018	3		3
Thereafter	0		0
Finite-Lived Intangible Assets, Net	137		137		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	786		786		786
Finite-Lived Intangible Assets, Accumulated Amortization	(700)		(700)		(678)
Finite-Lived Intangible Assets, Net	86		86		108
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)	1 year 9 months 18 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	86		86		108
Trademarks
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	55		55		55
Finite-Lived Intangible Assets, Accumulated Amortization	(38)		(38)		(31)
Finite-Lived Intangible Assets, Net	17		17		24
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)	1 year 3 months 18 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	17		17		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	(124)		(124)		(117)
Finite-Lived Intangible Assets, Net	34		34		41
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	$ 34		$ 34		$ 41