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Income Taxes - Schedule of Reconciliation of Income Tax Expense (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Income Tax |  |  |  |
Income from operations before income taxes | $ 1,063 | $ 645 | $ 3,387 | $ 1,152
Statutory tax rate (as a percent) | 21.00% | 21.00% | 21.00% | 21.00%
Provision for income tax at federal statutory rate of 21% | $ 223 | $ 136 | $ 711 | $ 242
Increase (decrease) in income tax from: |  |  |  |
State tax, net of federal tax effect | 43 | 12 | 134 | (18)
Property-related | (72) | (78) | (198) | (195)
Other | (19) | (2) | (38) | (15)
Total income tax expense | $ 175 | $ 68 | $ 609 | $ 14
Effective tax rate | 16.50% | 10.50% | 18.00% | 1.20%
SCE |  |  |  |
Income Tax |  |  |  |
Income from operations before income taxes | $ 1,162 | $ 736 | $ 3,741 | $ 1,413
Statutory tax rate (as a percent) | 21.00% | 21.00% | 21.00% | 21.00%
Provision for income tax at federal statutory rate of 21% | $ 244 | $ 155 | $ 786 | $ 297
Increase (decrease) in income tax from: |  |  |  |
State tax, net of federal tax effect | 50 | 18 | 156 | 0
Property-related | (72) | (78) | (198) | (195)
Other | (19) | 0 | (39) | (8)
Total income tax expense | $ 203 | $ 95 | $ 705 | $ 94
Effective tax rate | 17.50% | 12.90% | 18.80% | 6.70%

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