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Commitments and Contingencies (Wildfire Insurance) (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Aug. 31, 2023 | May 31, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
SCE |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Regulatory assets |  |  | $ 11,182.0 |  | $ 11,182.0 |  |  |  | $ 10,678.0
Wildfire insurance expense |  |  |  |  |  |  | $ 450.0 | $ 437.0 |
SCE | Customer-funded self-insurance |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Wildfire insurance coverage |  | $ 1,000.0 |  |  |  |  |  |  |
Rate funded wildfire self-insurance program |  | 150.0 |  |  |  |  |  |  |
Rate funded wildfire self-insurance program future proceeds, assuming no claims |  | $ 300.0 |  |  |  |  |  |  |
Shareholder contribution on self insurance (as a percent) |  | 2.50% |  |  |  |  |  |  |
Threshold for insurance costs before shareholder contributions |  | $ 500.0 |  |  |  |  |  |  |
Maximum annual shareholder contribution |  | 12.5 |  |  |  |  |  |  |
Self-insurance fund value |  | $ 1,000.0 |  |  |  |  |  |  |
SCE | Insurance coverage through June 2023 |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Wildfire insurance coverage |  |  |  |  | 1,000.0 |  |  |  |
Self insurance |  |  |  |  | 100.0 |  |  |  |
Coverage net |  |  |  |  | 937.0 |  |  |  |
SCE | Insurance coverage through June 2022 |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Wildfire insurance coverage |  |  |  |  | 1,000.0 |  |  |  |
Self insurance |  |  |  |  | 100.0 |  |  |  |
Co-insurance |  |  |  |  | 63.0 |  |  |  |
SCE | Commercial insurance carriers |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Wildfire insurance expense |  |  |  |  |  |  | $ 357.0 | $ 413.0 |
SCE | Commercial insurance carriers | Insurance coverage through June 2023 |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Coverage net |  |  |  |  | 835.0 |  |  |  |
SCE | Commercial insurance carriers | Insurance coverage through June 2022 |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Coverage net |  |  |  |  | 875.0 |  |  |  |
SCE | Edison Insurance Services-EIS | Insurance coverage through June 2023 |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Coverage net |  |  |  |  | 102.0 |  |  |  |
SCE | Edison Insurance Services-EIS | Insurance coverage through June 2022 |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Coverage net |  |  |  |  | 28.0 |  |  |  |
2017/2018 Wildfire/Mudslide Events |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Charge for wildfire-related claims |  |  | 475.0 | $ 880.0 | 565.0 | $ 1,296.0 |  |  |
Expected revenue through electric rates |  |  | 27.0 | 50.0 | 33.0 | 76.0 |  |  |
2017/2018 Wildfire/Mudslide Events | SCE |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Wildfire insurance coverage |  |  |  |  | 1,000.0 |  |  |  |
Self insurance |  |  |  |  | 10.0 |  |  |  |
Expected revenue through electric rates |  |  | 27.0 |  |  |  |  |  |
Regulatory assets |  |  | 51.0 |  | 51.0 |  |  |  |
Potential impairment |  |  | 173.0 |  | 173.0 |  |  |  |
2017/2018 Wildfire/Mudslide Events | SCE | Aggregate |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Charge for wildfire-related claims |  |  |  |  | 9,300.0 |  |  |  |
Litigation settlement |  |  |  |  | 8,600.0 |  |  |  |
Insurance recoveries |  |  |  |  | 2,000.0 |  |  |  |
Expected revenue through electric rates |  |  |  |  | 409.0 |  |  |  |
2017/2018 Wildfire/Mudslide Events | SCE | SED Settlement | Aggregate |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Litigation settlement |  |  |  |  | 65.0 |  |  |  |
November 2018 Wildfires | SCE |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Wildfire insurance coverage |  |  |  |  | 1,000.0 |  |  |  |
Self insurance |  |  |  |  | 10.0 |  |  |  |
Thomas and Koenigstein Fires and Montecito Mudslides | SCE |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Requested increase (decrease) revenue requirement | $ 2,400.0 |  |  |  |  |  |  |  |
Loss contingency, Uninsured claims | 2,000.0 |  |  |  |  |  |  |  |
Legal and other costs | 400.0 |  |  |  |  |  |  |  |
CPUC cost recovery proceedings, capital recovery portion | $ 65.0 |  |  |  |  |  |  |  |
Post-2018 Wildfires |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Charge for wildfire-related claims |  |  | 118.0 | 415.0 | 124.0 | 565.0 |  |  |
Insurance recoveries |  |  | 111.0 | 244.0 | 111.0 | 383.0 |  |  |
Expected revenue through electric rates |  |  |  | 162.0 |  | 162.0 |  |  |
Post-2018 Wildfires | Edison Insurance Services-EIS |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Charge for wildfire-related claims |  |  | 3.0 | 9.0 | 3.0 | 9.0 |  |  |
Post-2018 Wildfires | SCE |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Charge for wildfire-related claims |  |  | 118.0 | 415.0 | 124.0 | 565.0 |  |  |
Insurance recoveries |  |  | 114.0 | 253.0 | 114.0 | 392.0 |  |  |
Expected revenue through electric rates |  |  |  | $ 162.0 |  | $ 162.0 |  |  |
Regulatory assets |  |  | 166.0 |  | 166.0 |  |  |  |
Expected insurance recoveries |  |  | $ 560.0 |  | 560.0 |  |  |  |
Post-2018 Wildfires | SCE | Aggregate |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |
Charge for wildfire-related claims |  |  |  |  | 820.0 |  |  |  |
Insurance recoveries |  |  |  |  | 587.0 |  |  |  |
Expected revenue through electric rates |  |  |  |  | $ 166.0 |  |  |  |

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