Acquired Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 2,260		$ 2,260		$ 2,320
Finite-Lived Intangible Assets, Accumulated Amortization	(1,035)		(1,035)		(921)
Finite-Lived Intangible Assets, Net	1,225		1,225		1,399
Acquired finite-lived intangible asset amortization expense	58	$ 17	114	$ 36
Indefinite-Lived Intangible Assets:
Total identifiable acquisition-related intangible assets, Gross Carrying Amount	2,275		2,275		2,335
Total identifiable acquisition-related intangible assets, Net	1,240		1,240		1,414
Estimated amortization expense of finite-lived acquisition-related intangible assets
2013 (remaining three months)	111		111
2014	212		212
2015	196		196
2016	193		193
2017	182		182
2018	166		166
Thereafter	165		165
Finite-Lived Intangible Assets, Net	1,225		1,225		1,399
Vyvx Trade Name
Indefinite-Lived Intangible Assets:
Indefinite-Lived Intangible Assets	15		15		15
Customer Contracts And Relationships
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	1,975		1,975		1,977
Finite-Lived Intangible Assets, Accumulated Amortization	(835)		(835)		(741)
Finite-Lived Intangible Assets, Net	1,140		$ 1,140		1,236
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)			6 years 3 months 18 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	1,140		$ 1,140		1,236
Trademarks
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	55		55		115
Finite-Lived Intangible Assets, Accumulated Amortization	(52)		(52)		(47)
Finite-Lived Intangible Assets, Net	3		$ 3		68
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)			3 months 18 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	3		$ 3		68
Patents and Developed Technology
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	230		230		228
Finite-Lived Intangible Assets, Accumulated Amortization	(148)		(148)		(133)
Finite-Lived Intangible Assets, Net	82		$ 82		95
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)			3 years 7 months 6 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	$ 82		$ 82		$ 95