Restructuring Charges/Other - Restructuring Reserve (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($)
Restructuring And Related Activities [Abstract]
Balance, December 31, 2016	$ 40
Restructuring charges	4
Payments	(4)
Non-cash items	(1)	[1]
Balance, March 31, 2017	$ 39

[1] Reflects charges for impacts of accelerated depreciation and changes in exchange rates.