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Income Taxes (Rate Reconciliation) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Income Tax Disclosure [Line Items] |  |  |  |
Statutory tax rate (as a percent) |  |  | 21.00% | 21.00%
Income from operations before income taxes | $ 460 | $ 299 | $ 838 | $ 380
Provision for income tax at federal statutory rate of 21% | 97 | 63 | 176 | 80
Increase (decrease) in income tax from: |  |  |  |
State tax, net of federal benefit | 1 | (4) |  | (21)
Property-related | (47) | (48) | (105) | (93)
Other |  | (4) | (7) | (14)
Total income tax expense (benefit) | $ 51 | $ 7 | $ 64 | $ (48)
Effective tax rate | 11.10% | 2.30% | 7.60% | (12.60%)
Increase (decrease) to previously recorded tax expense | $ 268 |  |  |
SCE |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Statutory tax rate (as a percent) |  |  | 21.00% | 21.00%
Income from operations before income taxes | 517 | $ 349 | $ 945 | $ 482
Provision for income tax at federal statutory rate of 21% | 109 | 73 | 198 | 101
Increase (decrease) in income tax from: |  |  |  |
State tax, net of federal benefit | 8 |  | 11 | (13)
Property-related | (47) | (48) | (105) | (93)
Other | (2) | (3) | (7) | (13)
Total income tax expense (benefit) | $ 68 | $ 22 | $ 97 | $ (18)
Effective tax rate | 13.20% | 6.30% | 10.30% | (3.70%)

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