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Commitments and Contingencies - Recoveries (Details) - SCE - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 13 Months Ended
--- | --- | --- | --- | --- | ---
Feb. 28, 2025 | Jul. 31, 2024 | Mar. 31, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Insurance and other third party recoveries |  |  |  | $ 82.0 | $ 60.0 |  |  |  |  |  |
Wildfire insurance expense | $ 50.0 |  | $ 50.0 |  |  |  |  | $ 450.0 |  |  |
Wildfire Liability Insurance | Subsidiary of Common Parent |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Proceeds from self-insurance program |  |  |  | 224.0 |  | $ 300.0 | $ 150.0 |  |  |  |
Proceeds from self-insurance program, additional amount authorized for collection |  |  |  | 76.0 |  |  |  |  |  |  |
Commercial insurance carriers |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Wildfire insurance expense |  |  |  |  |  |  |  | 357.0 |  |  |
2017/2018 Wildfire/Mudslide Events |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Wildfire insurance coverage |  |  |  | 1,000.0 |  |  |  |  |  |  |
Self insurance |  |  |  | 10.0 |  |  |  |  |  |  |
Insurance and other third party recoveries |  |  |  | 0.0 | $ 0.0 |  |  |  |  |  |
November 2018-Woolsey |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Wildfire insurance coverage |  |  |  | 1,000.0 |  |  |  |  |  |  |
Self insurance |  |  |  | 10.0 |  |  |  |  |  |  |
2017 Creek Fire |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Insurance and other third party recoveries |  |  |  | 18.0 |  |  |  |  |  |  |
Aggregate | 2017/2018 Wildfire/Mudslide Events |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Insurance and other third party recoveries |  |  |  | 2,000.0 |  |  |  |  |  |  |
Insurance Coverage Through June 2022 |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Wildfire insurance coverage |  |  |  |  |  |  |  | 1,000.0 | $ 1,000.0 | $ 1,000.0 | $ 1,200.0
Self insurance |  |  |  |  |  |  |  | 63.0 | 163.0 | 130.0 | 165.0
Insurance coverage through June 2023 |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Coverage net |  |  |  |  |  |  |  | $ 937.0 | $ 837.0 | $ 870.0 | $ 1,000.0
Customer-funded wildfire self-insurance |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Wildfire insurance coverage |  | $ 1,000.0 |  | 1,000.0 |  |  |  |  |  |  |
Maximum annual shareholder contribution |  | 12.5 |  | $ 12.5 |  |  |  |  |  |  |
Rate funded wildfire self-insurance program future proceeds, assuming no claims |  | $ 300.0 |  |  |  |  |  |  |  |  |
Shareholder contribution on self insurance (as a percent) |  | 2.50% |  |  |  |  |  |  |  |  |
Threshold before shareholder contributions |  | $ 500.0 |  |  |  |  |  |  |  |  |

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