Current Other Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Other Liabilities, Current [Abstract]
Asset retirement obligations	$ 3	$ 6
Benefit obligations (Note 9)	28	28
Customer rebates	37	63
Derivatives (Note 14)	97	8
Environmental (Note 10)	19	12
Insurance	4	6
Interest	26	29
Legal (Note 16)	98	105
Operating leases	29	29
Restructuring (Note 12)	10	13
Salaries and benefits	90	89
Sales and use tax/foreign withholding tax payable	98	35
Other	33	38
Total	$ 572	$ 461