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Fair Value Measurement - Schedule of Commodity Derivative Balances Subject to Right of Setoff (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Offsetting Derivative Assets [Abstract]
Assets - gross amounts recognized	$ 975	$ 2,037
Assets - amounts without right of setoff	33	39
Assets - gross amounts	942	1,998
Assets - gross amounts offset	548	1,176
Assets - net amounts presented	394	822
Assets - cash collateral	5	37
Assets - net amounts	389	785
Offsetting Derivative Liabilities [Abstract]
Liabilities - gross amounts recognized	897	2,010
Liabilities - amounts without right of setoff	27	20
Liabilities - gross amounts recognized	870	1,990
Liabilities - gross amounts offset	548	1,176
Liabilities - net amounts presented	322	814
Liabilities - cash collateral	44	52
Liabilities - net amounts	$ 278	$ 762

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