Intangible Assets and Goodwill - Amortized Intangible Assets, Excluding Goodwill, By Business Segment (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,179	$ 983
Accumulated Amortization	283	162
Products
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	217	178
Accumulated Amortization	73	63
Services
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	962	805
Accumulated Amortization	$ 210	$ 99