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Balance Sheet and Cash Flow Supplemental Information - Accrued Liabilities (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Accrued Liabilities, Current [Abstract]    
Employee-related costs and benefits $ 107 $ 133
Related party payables 1 7
Interest 31 21
Sales rebates 39 43
Restructuring 2 2
Taxes other than income taxes 17 16
Asset retirement obligations 7 9
Interest rate swaps 43 57
Other accrued liabilities 61 62
Accrued liabilities $ 308 $ 350