Other Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 2,255		$ 2,255		$ 2,257
Finite-Lived Intangible Assets, Accumulated Amortization	(1,461)		(1,461)		(1,357)
Finite-Lived Intangible Assets, Net	794		794		900
Acquired finite-lived intangible asset amortization expense	52	$ 53	$ 104	$ 106
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)			4 years 4 months 24 days
Indefinite-Lived Intangible Assets:
Total identifiable acquisition-related intangible assets, Gross Carrying Amount	2,270		$ 2,270		2,272
Total identifiable acquisition-related intangible assets, Net	809		809		915
Estimated amortization expense of finite-lived acquisition-related intangible assets
2017 (remaining six months)	95		95
2018	190		190
2019	179		179
2020	166		166
2021	143		143
2022	21		21
Thereafter	0		0
Finite-Lived Intangible Assets, Net	794		794		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	(1,205)		(1,205)		(1,113)
Finite-Lived Intangible Assets, Net	768		$ 768		860
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)			4 years 4 months 24 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	768		$ 768		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	227		227		229
Finite-Lived Intangible Assets, Accumulated Amortization	(201)		(201)		(189)
Finite-Lived Intangible Assets, Net	26		$ 26		40
Acquired finite-lived intangible assets weighted average remaining useful lives (in years)			2 years 3 months 18 days
Estimated amortization expense of finite-lived acquisition-related intangible assets
Finite-Lived Intangible Assets, Net	$ 26		$ 26		$ 40