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v3.25.4

Fair Value Measurements (Narrative) (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 USD ($) MMcf | Dec. 31, 2024 USD ($)
Natural Gas [Member] | Ten-year Physical Commodity Sales Contract [Member] |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Natural gas volumes | MMcf | 100 |
Forward Price [Member] |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |
Increase (decrease) in net risk management assets and liabilities | $ | $ 24 | $ 0

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