Other Expense (Income), net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Other Expense (Income), net
Restructuring, asset impairment and other charges		$ 39
Foreign currency exchange loss (gain)	$ 2	(1)
Intangible amortization expense	10	10
Royalty income	(3)	(4)
Other expense (income)	(12)	1
Other Expense (Income), net	$ (3)	$ 45