Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Definite-Lived Intangible Assets [Abstract]
Finite-Lived Intangible Assets, Gross	$ 131	$ 131
Finite-Lived Intangible Assets, Accumulated Amortization	42	38
Net Carrying Value	89	93
Goodwill		40
Goodwill and Indefinite-lived Intangible Assets, Net	40	40
Goodwill and indefinite-lived intangible assets [Abstract]
Goodwill, Gross	40	40
Intangible Assets, Gross (Including Goodwill)	171	171
Intangible Assets Net Including Goodwill	129	133
Amortization expense	(4)
Future Amortization Expense, Year One	14
Finite-Lived Intangible Assets, Amortization Expense, Year Two	$ 12
Developed Technology Rights [Member]
Definite-Lived Intangible Assets [Abstract]
Finite-Lived Intangible Asset, Useful Life	7 years
Finite-Lived Intangible Assets, Gross	$ 39	39
Finite-Lived Intangible Assets, Accumulated Amortization	21	20
Net Carrying Value	18	19
Goodwill and indefinite-lived intangible assets [Abstract]
Amortization expense	$ (1)
Customer Relationships [Member]
Definite-Lived Intangible Assets [Abstract]
Finite-Lived Intangible Asset, Useful Life	10 years
Finite-Lived Intangible Assets, Gross	$ 84	84
Finite-Lived Intangible Assets, Accumulated Amortization	20	17
Net Carrying Value	64	67
Goodwill and indefinite-lived intangible assets [Abstract]
Amortization expense	$ (3)
Other [Member]
Definite-Lived Intangible Assets [Abstract]
Finite-Lived Intangible Asset, Useful Life	32 years
Finite-Lived Intangible Assets, Gross	$ 8	8
Finite-Lived Intangible Assets, Accumulated Amortization	1	1
Net Carrying Value	7	$ 7
Goodwill and indefinite-lived intangible assets [Abstract]
Amortization expense	0
Goodwill [Member]
Goodwill and indefinite-lived intangible assets [Abstract]
Amortization expense	$ 0