Other Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 2,256		$ 2,256		$ 2,257
Finite-Lived Intangible Assets, Accumulated Amortization	(1,510)		(1,510)		(1,357)
Finite-Lived Intangible Assets, Net	746		746		900
Acquired finite-lived intangible asset amortization expense	49	$ 53	$ 153	$ 159
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)			4 years 1 month 6 days
Indefinite-Lived Intangible Assets:
Total identifiable acquisition-related intangible assets, Gross Carrying Amount	2,271		$ 2,271		2,272
Total identifiable acquisition-related intangible assets, Net	761		761		915
Estimated amortization expense of finite-lived acquisition-related intangible assets
2017 (remaining three months)	47		47
2018	190		190
2019	179		179
2020	166		166
2021	143		143
2022	21		21
Thereafter	0		0
Finite-Lived Intangible Assets, Net	746		746		900
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	1,973		1,973		1,973
Finite-Lived Intangible Assets, Accumulated Amortization	(1,250)		(1,250)		(1,113)
Finite-Lived Intangible Assets, Net	723		$ 723		860
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)			4 years 2 months 12 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	723		$ 723		860
Trademarks
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	55		55		55
Finite-Lived Intangible Assets, Accumulated Amortization	(55)		(55)		(55)
Finite-Lived Intangible Assets, Net	0		0		0
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	0		0		0
Patents and Developed Technology
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	228		228		229
Finite-Lived Intangible Assets, Accumulated Amortization	(205)		(205)		(189)
Finite-Lived Intangible Assets, Net	23		$ 23		40
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)			2 years 1 month 6 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	$ 23		$ 23		$ 40