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Regulatory Assets and Liabilities - Schedule of Regulatory Liabilities (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Regulatory Liabilities |  |
Total current | $ 1,109 | $ 1,347
Total long-term | 10,736 | 10,159
SCE |  |
Regulatory Liabilities |  |
Total current | 1,109 | 1,347
Total long-term | 10,736 | 10,159
Total regulatory liabilities | 11,845 | 11,506
SCE | Regulatory balancing and memorandum accounts |  |
Regulatory Liabilities |  |
Total current | 1,017 | 1,144
Total long-term | 2,175 | 2,023
SCE | Energy derivatives |  |
Regulatory Liabilities |  |
Total current | 54 | 165
SCE | Costs of removal |  |
Regulatory Liabilities |  |
Total long-term | 2,693 | 2,520
SCE | Deferred income taxes |  |
Regulatory Liabilities |  |
Total long-term | 2,143 | 2,163
SCE | Recoveries in excess of ARO liabilities |  |
Regulatory Liabilities |  |
Total long-term | 1,982 | 1,748
SCE | Pension and other postretirement benefits |  |
Regulatory Liabilities |  |
Total long-term | 1,708 | 1,690
SCE | Other |  |
Regulatory Liabilities |  |
Total current | 38 | 38
Total long-term | $ 35 | $ 15

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