Other Financial Data - Schedule of Other Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Other (Expense) Income
Foreign currency remeasurement gain (loss)	$ (16)	$ (10)
Loss on disposal of business	(1)	(2)
Pension and other postretirement income	2	8
Equity earnings (losses)	1	6
Gain (loss) on financial instruments	0	(4)
Other	(1)	0
Total	$ (15)	$ (2)