Acquired Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 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	(1,093)		(1,093)		(921)
Finite-Lived Intangible Assets, Net	1,167		1,167		1,399
Acquired finite-lived intangible asset amortization expense	58	$ 14	172	$ 50
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	1,182		1,182		1,414
Estimated amortization expense of finite-lived acquisition-related intangible assets
2013 (remaining three months)	54		54
2014	212		212
2015	196		196
2016	193		193
2017	182		182
2018	166		166
Thereafter	164		164
Finite-Lived Intangible Assets, Net	1,167		1,167		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	(884)		(884)		(741)
Finite-Lived Intangible Assets, Net	1,091		$ 1,091		1,236
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)			6 years 1 month 6 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	1,091		$ 1,091		1,236
Trademarks
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	55		55		115
Finite-Lived Intangible Assets, Accumulated Amortization	(55)		(55)		(47)
Finite-Lived Intangible Assets, Net	0		0		68
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	0		0		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	(154)		(154)		(133)
Finite-Lived Intangible Assets, Net	76		$ 76		95
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)			3 years 4 months 24 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	$ 76		$ 76		$ 95