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Other Liabilities - Schedule of Other Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Other Liabilities Noncurrent [Abstract]    
Environmental remediation $ 332 $ 152
Employee-related costs 113 130
Accrued litigation 50 53
Asset retirement obligations 54 51
Deferred revenue 8 7
Miscellaneous 76 64
Total other liabilities $ 633 $ 457