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Derivative and Financial Instruments - Schedule of Net Exposures from Outstanding Commodity Derivative Contracts (Details) - Commodity Contract - Bcf | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Natural Gas and Power, Fixed Price | Long |  |
Trading Activity, Gains and Losses, Net [Line Items] |  |
Commodity derivatives - volumetric material net exposures |  | 4
Natural Gas and Power, Fixed Price | Short |  |
Trading Activity, Gains and Losses, Net [Line Items] |  |
Commodity derivatives - volumetric material net exposures | 18 |
Natural Gas and Power, Basis | Short |  |
Trading Activity, Gains and Losses, Net [Line Items] |  |
Commodity derivatives - volumetric material net exposures | 2 | 22

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