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Derivative Instruments - Effect of Derivative Instruments on the Consolidated Statement of Operations (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Derivative [Line Items]      
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other (income) expense    
Total $ (463) $ (221) $ 61
Gas contracts      
Derivative [Line Items]      
Cash (paid) received on settlement of derivative instruments (438) (307) 35
Non-cash gain on derivative instruments 149 99 26
Oil contracts      
Derivative [Line Items]      
Cash (paid) received on settlement of derivative instruments (324) (124) 0
Non-cash gain on derivative instruments $ 150 $ 111 $ 0