Intangible Assets and Goodwill (Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 983	$ 111
Accumulated Amortization	162	62
Intangible Assets And Goodwill
Amortization expense on intangibles	113	8	$ 4
Finite-Lived Intangible Assets, Future Amortization Expense
2017	132
2018	130
2019	129
2020	126
2021	125
Completed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	116	60
Accumulated Amortization	38	32
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8	8
Accumulated Amortization	6	5
Customer-related
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	810	23
Accumulated Amortization	101	10
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	49	20
Accumulated Amortization	$ 17	$ 15