Current Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Other Liabilities, Current [Abstract]
Asset retirement obligations	$ 10	$ 6
Benefit obligations (Note 13)	27	28
Customer rebates	53	63
Derivatives (Note 19)	87	8
Environmental (Note 14)	11	12
Insurance	5	6
Interest	29	29
Legal (Note 21)	107	105
Operating leases (Note 18)	36	29
Restructuring (Note 16)	11	13
Salaries and benefits	121	89
Sales and use tax/foreign withholding tax payable	140	35
Other	43	38
Total	$ 680	$ 461
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesCurrent	us-gaap:OtherLiabilitiesCurrent