Risk Management Activities - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Derivative liability, current	$ 22,000,000	$ 169,000,000
Liabilities From Price Risk Management Activities
Derivatives, Fair Value [Line Items]
Collateral posted on derivative		92,000,000
Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset	1,000,000	3,000,000
Derivative liability, fair value, gross liability	275,000,000	606,000,000
Collateral posted on derivative		232,000,000
Price Risk Derivative
Derivatives, Fair Value [Line Items]
Derivative liability, current	22,000,000	169,000,000
Derivative liability, noncurrent	274,000,000	371,000,000
Price Risk Derivative \| Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset		26,000,000
Derivative liability, fair value, gross liability		$ 287,000,000
Price Risk Derivative \| Liabilities From Price Risk Management Activities
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset	6,000,000
Derivative liability, fair value, gross liability	$ 28,000,000

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Amount of right to receive cash collateral under master netting arrangements offset against derivative liabilities.

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