Regulatory Assets and Liabilities - Schedule of Regulatory Liabilities (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Regulatory Liabilities | ||
| Total current | $ 354 | $ 1,158 |
| Total long-term | 10,870 | 10,627 |
| SCE | ||
| Regulatory Liabilities | ||
| Total current | 354 | 1,158 |
| Total long-term | 10,870 | 10,627 |
| Total regulatory liabilities | 11,224 | 11,785 |
| SCE | Regulatory balancing and memorandum accounts | ||
| Regulatory Liabilities | ||
| Total current | 321 | 1,139 |
| Total long-term | 2,028 | 1,842 |
| SCE | Costs of removal | ||
| Regulatory Liabilities | ||
| Total long-term | 2,865 | 2,737 |
| SCE | Deferred income taxes | ||
| Regulatory Liabilities | ||
| Total long-term | 2,139 | 2,126 |
| SCE | Recoveries in excess of ARO liabilities | ||
| Regulatory Liabilities | ||
| Total long-term | 1,968 | 2,057 |
| SCE | Pension and other postretirement benefits | ||
| Regulatory Liabilities | ||
| Total long-term | 1,835 | 1,829 |
| SCE | Other | ||
| Regulatory Liabilities | ||
| Total current | 33 | 19 |
| Total long-term | $ 35 | $ 36 |