Current Other Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Other Liabilities, Current [Abstract]
Asset retirement obligations	$ 3	$ 3
Benefit obligations (Note 11)	30	30
Customer rebates (Note 21)	46	76
Derivatives (Note 17)	4	7
Environmental (Note 12)	20	20
Insurance	4	4
Interest	23	21
Operating leases (Note 16)	32	0
Restructuring (Note 14)	1	4
Salaries and benefits	64	119
Sales and use tax/foreign withholding tax payable	39	22
Other	45	37
Total	$ 311	$ 343