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Summary of Significant Accounting Policies - Narrative (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 31, 2025 USD ($) | Nov. 30, 2024 USD ($) | Jun. 30, 2025 shares | Jun. 30, 2024 shares | Jun. 30, 2025 mi² shares | Jun. 30, 2024 shares
Organization |  |  |  |  |  |
Antidilutive awards excluded from earnings per share (in shares) | shares |  |  | 9,879,885 | 1,899,476 | 9,041,783 | 3,051,134
Revenue not yet approved |  | $ 1,300 |  |  |  |
Requested increase revenue requirement |  | $ 220 |  |  |  |
Requested increase revenue requirement (as a percent) |  | 20.00% |  |  |  |
Wildfire Insurance Fund |  |  |  |  |  |
Organization |  |  |  |  |  |
Insurance fund contribution amortization period |  |  |  |  | 20 years |
SCE |  |  |  |  |  |
Organization |  |  |  |  |  |
Supply of electricity area covered (in square miles) | mi² |  |  |  |  | 50,000 |
SCE | Subsequent Event |  |  |  |  |  |
Organization |  |  |  |  |  |
Revenue not yet approved | $ 9,800 |  |  |  |  |
Requested increase revenue requirement | $ 1,174 |  |  |  |  |

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