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Fair Value Measurement - Commodity Derivative Balances Subject to Right of Setoff (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Offsetting Derivative Assets [Abstract]    
Assets - Gross Amounts Recognized $ 724 $ 2,037
Assets - Amounts Not Subject to Right of Setoff 39 39
Assets - Amounts Subject to Right of Setoff, Gross Amounts 685 1,998
Assets - Amounts Subject to Right of Setoff, Gross Amounts Offset 375 1,176
Assets - Amounts Subject to Right of Setoff, Net Amounts Presented 310 822
Assets - Amounts Subject to Right of Setoff, Cash Collateral 4 37
Assets - Amounts Subject to Right of Setoff, Net Amounts 306 785
Offsetting Derivative Liabilities [Abstract]    
Liabilities - Gross Amounts Recognized 647 2,010
Liabilities - Amounts Not Subject to Right of Setoff 34 20
Liabilities - Amounts Subject to Right of Setoff, Gross Amounts 613 1,990
Liabilities - Amounts Subject to Right of Setoff, Gross Amounts Offset 375 1,176
Liabilities - Amounts Subject to Right of Setoff, Net Amounts Presented 238 814
Liabilities - Amounts Subject to Right of Setoff, Cash Collateral 47 52
Liabilities - Amounts Subject to Right of Setoff, Net Amounts $ 191 $ 762