Risk Management Activities - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative asset, current	$ 1	$ 0
Derivative liability, current	79	269
Collateral posted on derivative	1,766
Price Risk Derivative \| Assets From Price Risk Management Activities
Derivatives, Fair Value [Line Items]
Derivative asset, current	1	0
Derivative asset, fair value, gross asset	2
Derivative liability, fair value, gross liability	1
Price Risk Derivative \| Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset, noncurrent	0	6
Derivative asset, fair value, gross asset		7
Derivative liability, fair value, gross liability		1
Price Risk Derivative \| Liabilities From Price Risk Management Activities
Derivatives, Fair Value [Line Items]
Derivative liability, current	79	269
Derivative asset, fair value, gross asset	10	29
Derivative liability, fair value, gross liability	1,357	421
Collateral posted on derivative	1,268	123
Price Risk Derivative \| Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, noncurrent	45	37
Derivative asset, fair value, gross asset	4	10
Derivative liability, fair value, gross liability	687	64
Collateral posted on derivative	$ 638	$ 17

Fair value, after the 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, 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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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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