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Other Noncurrent Assets and Liabilities - Other Noncurrent Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Other Noncurrent Assets and Liabilities [Abstract]    
CVR liability $ 401 $ 838
Tax Receivable Agreement liability 447 532
Operating lease liabilities 453 466
Other 666 570
Total Other noncurrent liabilities $ 1,967 $ 2,406