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Derivative and Financial Instruments - Net Exposures from Outstanding Derivative Contracts (Details) - Short - Commodity - Bcf | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Fixed price |  |
Trading Activity, Gains and Losses, Net [Line Items] |  |
Commodity derivatives - volumetric material net exposures | (15) | (17)
Basis |  |
Trading Activity, Gains and Losses, Net [Line Items] |  |
Commodity derivatives - volumetric material net exposures | (17) | 0

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