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Commitments and Contingencies - Schedule of Wind Purchased Power (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Loss Contingencies [Line Items] |  |  |
Utilities Operating Expense, Purchased Power under Long-term Contracts | $ 48.8 | $ 58.0 | $ 55.8
CPV Keenan [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Utilities Operating Expense, Purchased Power under Long-term Contracts | 23.0 | 25.8 | 27.3
Edison Mission Energy [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Utilities Operating Expense, Purchased Power under Long-term Contracts | 20.5 | 24.9 | 21.7
NextEra Energy [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Utilities Operating Expense, Purchased Power under Long-term Contracts | $ 5.3 | $ 7.3 | $ 6.8

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