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Risk Management Activities - Narrative (Details) - USD ($) $ in Millions | Jul. 31, 2025 | Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2024
--- | --- | --- | --- | ---
Derivatives, Fair Value [Line Items] |  |  |  |
Collateral already posted on derivative |  | $ 0 | $ 0 | $ 0
Collateral held on derivative |  | $ 0 | $ 0 |
Subsequent Event |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Collateral already posted on derivative | $ 0 |  |  |
Collateral held on derivative | $ 0 |  |  |

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