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Commitments and Contingencies - Cabin Creek (Details) - USD ($) $ in Millions | Feb. 03, 2025 | Dec. 31, 2023 | Dec. 31, 2015
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Public Utilities, General Disclosures [Line Items] |  |  |
Cabin Creek estimated costs |  |  | $ 88
Cabin Creek actual costs |  | $ 110 |
Subsequent Event |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
CPUC Staff recommended disallowance | $ 21 |  |
UCA recommended disallowance - minimum | 71 |  |
UCA recommended disallowance - maximum | $ 138 |  |

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