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Commitments and Contingencies (Wildfire loss expense) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
2017/2018 Wildfire/Mudslide Events |  |
Commitments and Contingencies |  |
Charge for wildfire-related claims | $ 1,296 | $ 1,265
Expected revenue from CPUC and FERC customers | (76) | (67)
Total pre-tax charge | 1,220 | 1,198
Income tax benefit | (341) | (304)
Total after-tax charge | 879 | 894
Post-2018 Wildfires |  |
Commitments and Contingencies |  |
Charge for wildfire-related claims | 572 | 7
Expected insurance recoveries | (390) |
Expected revenue from CPUC and FERC customers | (162) |
Total pre-tax charge | 20 | 7
Income tax benefit | (6) | (2)
Total after-tax charge | 14 | 5
SCE | Post-2018 Wildfires |  |
Commitments and Contingencies |  |
Charge for wildfire-related claims | 572 | 7
Expected insurance recoveries | (399) |
Expected revenue from CPUC and FERC customers | (162) |
Total pre-tax charge | 11 | 7
Income tax benefit | (3) | (2)
Total after-tax charge | 8 | $ 5
SCE | Post-2018 Wildfires | Wildfire expense memorandum account |  |
Commitments and Contingencies |  |
Expected revenue from CPUC and FERC customers | 152 |
SCE | Post-2018 Wildfires | FERC balancing accounts |  |
Commitments and Contingencies |  |
Expected revenue from CPUC and FERC customers | $ 14 |

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