Intangible Assets and Goodwill Intangible Assets and Goodwill by Major Class (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 1,505	$ 1,388
Finite-Lived Intangible Assets, Accumulated Amortization	568	400	$ 283
Finite-Lived Intangible Assets, Net Carrying Amount	937	988
Goodwill	1,944	1,502	1,531
Intangible Assets, Gross (Including Goodwill)	3,731	3,050	$ 3,085
Intangible assets, net	3,163	2,650
In-Process Research and Development
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	147	34
Trade names
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	135	126
Patents and developed technology
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Assets, Gross Carrying Amount	639	602
Finite-Lived Intangible Assets, Accumulated Amortization	324	255
Finite-Lived Intangible Assets, Net Carrying Amount	$ 315	347
Patents and developed technology | Minimum
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Patents and developed technology | Maximum
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Customer relationships
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 798	730
Finite-Lived Intangible Assets, Accumulated Amortization	219	126
Finite-Lived Intangible Assets, Net Carrying Amount	$ 579	604
Customer relationships | Minimum
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Customer relationships | Maximum
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	14 years
Trade names
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 68	56
Finite-Lived Intangible Assets, Accumulated Amortization	25	19
Finite-Lived Intangible Assets, Net Carrying Amount	$ 43	$ 37
Trade names | Minimum
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Trade names | Maximum
Acquired Finite and Infinite-Lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	25 years