Segments - Reconciliation of Segment EBITDA to Consolidated Net Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting [Abstract]
Segment EBITDA	$ 259	$ 254
Corporate expense and other items, net	(2)	(6)
Depreciation	(73)	(64)
Amortization	(4)	(3)
Non-service cost components of pension and OPEB costs	(6)	(3)
Restructuring charges, net	(9)	(1)
Stock compensation expense	(5)	(4)
Strategic transaction expenses, net of transaction breakup fee income	(13)	1
Acquisition related inventory adjustments	(4)
Non-income tax legal judgment	6
Other items	(9)
Earnings before interest and income taxes	140	174
Interest expense	27	24
Interest income	2	3
Earnings before income taxes	115	153
Income tax expense	20	48
Equity in earnings of affiliates	6	6
Net income	$ 101	$ 111