Risk Management Activities - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Derivative liability, current	$ 22	$ 169
Liabilities From Price Risk Management Activities
Derivatives, Fair Value [Line Items]
Collateral posted on derivative		92
Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross liability	256	606
Derivative asset, fair value, gross asset	1	3
Collateral posted on derivative		232
Price Risk Derivative
Derivatives, Fair Value [Line Items]
Derivative liability, current	22	169
Derivative liability, noncurrent	255	371
Price Risk Derivative \| Other Assets
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross liability		287
Derivative asset, fair value, gross asset		$ 26
Price Risk Derivative \| Liabilities From Price Risk Management Activities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross liability	26
Derivative asset, fair value, gross asset	$ 4

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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Fair value, after the 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, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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

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