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Commitments and Contingencies - Expense Summary (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Commitments and Contingencies |  |  |
Charge for wildfire-related claims | $ 743 |  |
Expected insurance recoveries | (3,335) |  |
Subsidiary of Common Parent |  |  |
Commitments and Contingencies |  |  |
Charge for wildfire-related claims | 4 | $ 3 | $ 9
2017/2018 Wildfire/Mudslide Events |  |  |
Commitments and Contingencies |  |  |
Charge for wildfire-related claims | 490 |  |
Expected insurance recoveries | (2,440) |  |
SCE |  |  |
Commitments and Contingencies |  |  |
Charge for wildfire-related claims | 743 | 814 | 1,868
Expected insurance recoveries | (96) | (149) | (399)
Expected recoveries through electric rates | (36) | (39) | (238)
Total pre-tax charge | 611 | 626 | 1,231
Income tax benefit | (172) | (174) | (344)
Total after-tax charge | 439 | 452 | 887
SCE | 2017/2018 Wildfire/Mudslide Events And The Other Wildfire Events |  |  |
Commitments and Contingencies |  |  |
Expected insurance recoveries | (2,700) |  |
Expected recoveries through electric rates | (617) |  |
SCE | 2017/2018 Wildfire/Mudslide Events And The Other Wildfire Events | Aggregate |  |  |
Commitments and Contingencies |  |  |
Charge for wildfire-related claims | 11,000 |  |
Total after-tax charge | 5,600 |  |
SCE | Other Wildfire Events |  |  |
Commitments and Contingencies |  |  |
Charge for wildfire-related claims | 253 | 184 | 572
Expected insurance recoveries | (96) | (149) | (399)
Expected recoveries through electric rates | (9) | (2) | (162)
Total pre-tax charge | 148 | 33 | 11
Income tax benefit | (42) | (9) | (3)
Total after-tax charge | 106 | 24 | 8
SCE | 2017/2018 Wildfire/Mudslide Events |  |  |
Commitments and Contingencies |  |  |
Charge for wildfire-related claims | 490 | 630 | 1,296
Expected insurance recoveries | 0 | 0 | 0
Expected recoveries through electric rates | (27) | (37) | (76)
Total pre-tax charge | 463 | 593 | 1,220
Income tax benefit | (130) | (165) | (341)
Total after-tax charge | 333 | $ 428 | $ 879
SCE | 2017/2018 Wildfire/Mudslide Events | Aggregate |  |  |
Commitments and Contingencies |  |  |
Expected insurance recoveries | $ (2,000) |  |

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