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Commitments and Contingencies Sherco (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | May 17, 2024
Public Utilities, General Disclosures [Line Items] |  |
ALJ Recommended Customer Refund |  | $ 34
Disallowance Not Considered in ALJ Recommendation |  | $ 22
2011 Sherco Unit 3 Outage Refunds | $ 47 |
Proposed Refund - 2023 FCA | $ 22 |

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