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Income Taxes - Components of Net Accumulated Deferred Income Tax Liability (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets: |  |
Property | $ 943 | $ 894
Wildfire-related | 254 | 356
Nuclear decommissioning trust assets in excess of nuclear ARO liability | 373 | 380
Loss and credit carryforwards | 3,703 | 3,486
Regulatory balances | 610 | 626
Pension and postretirement benefits other than pensions, net | 117 | 127
Leases | 335 | 345
Other | 177 | 159
Other | 6,512 | 6,373
Less: valuation allowance | 17 | 17
Total | 6,495 | 6,356
Deferred tax liabilities: |  |
Property | 11,220 | 10,627
Regulatory balances | 1,299 | 1,450
Nuclear decommissioning trust assets | 373 | 380
Leases | 335 | 345
Other | 187 | 187
Total | 13,414 | 12,989
Accumulated deferred income tax liability, net | 6,919 | 6,633
Unrecognized tax benefits, net of deferred tax asset and tax credit carryforwards | 397 |
Operating loss carryforwards valuation allowance |  | 363
SEC Schedule, 12-09, Valuation Allowance, Operating Loss Carryforward |  |
Deferred tax assets: |  |
Less: valuation allowance | 17 |
SCE |  |
Deferred tax assets: |  |
Property | 929 | 877
Wildfire-related | 251 | 354
Nuclear decommissioning trust assets in excess of nuclear ARO liability | 373 | 380
Loss and credit carryforwards | 2,242 | 2,103
Regulatory balances | 610 | 626
Pension and postretirement benefits other than pensions, net | 21 | 25
Leases | 335 | 345
Other | 167 | 147
Other | 4,928 | 4,857
Less: valuation allowance | 0 | 0
Total | 4,928 | 4,857
Deferred tax liabilities: |  |
Property | 11,202 | 10,611
Regulatory balances | 1,299 | 1,450
Nuclear decommissioning trust assets | 373 | 380
Leases | 335 | 345
Other | 155 | 158
Total | 13,364 | 12,944
Accumulated deferred income tax liability, net | 8,436 | 8,087
Unrecognized tax benefits, net of deferred tax asset and tax credit carryforwards | $ 327 |
Operating loss carryforwards valuation allowance |  | $ 299

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