ASSETS - Other Long-term Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Schedule of Assets, noncurrent [Line Items]
Operating Lease, Right-of-Use Asset	$ 107	$ 0
Income and other taxes receivable	28	53
Derivative Asset	13	0
Value Added Tax Receivable, Noncurrent	7	0
Debt issuance costs	2	3
Reimbursable Engineering Costs, Noncurrent	1	0
Other	34	33
Total	219	117
Investment in PolyCharge (Note 2)
Schedule of Assets, noncurrent [Line Items]
Other Long-term Investments	6	7
Investment in Tula (Note 2)
Schedule of Assets, noncurrent [Line Items]
Other Long-term Investments	$ 21	$ 21