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Derivative and Financial Instruments - Schedule of Net Exposures from Outstanding Commodity Derivative Contracts (Details) - Commodity Contract - Bcf | 6 Months Ended | 12 Months Ended
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Jun. 30, 2025 | Dec. 31, 2024
Natural Gas and Power, Fixed Price | Short |  |
Trading Activity, Gains and Losses, Net [Line Items] |  |
Commodity derivatives - volumetric material net exposures | (30) | (17)
Natural Gas and Power, Basis | Long |  |
Trading Activity, Gains and Losses, Net [Line Items] |  |
Commodity derivatives - volumetric material net exposures | (7) | 0

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