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INCOME TAXES (Tables) | 6 Months Ended
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Jun. 30, 2023
Income Tax Disclosure [Abstract] |
Schedule of Effective Income Tax Rate Reconciliation | The following tables reconcile the effective tax rate to the federal income tax statutory rate for the three and six months ended June 30, 2023 and 2022:
|  | For the Three Months |  | For the Six Months
|  | Ended June 30, |  | Ended June 30,
|  | 2023 |  | 2022 |  | 2023 |  | 2022
|  | (In millions)
Income before income taxes |  | $ | 328 |  |  | $ | 241 |  |  | $ | 728 |  |  | $ | 612 |
Federal income tax expense at statutory rate (21%) |  | $ | 69 |  |  | $ | 51 |  |  | $ | 153 |  |  | $ | 129 |
Increases (reductions) in tax expense resulting from: |  |  |  |  |  |  |  |
State income taxes, net of federal tax benefit |  | 19 |  |  | 17 |  |  | 43 |  |  | 44 |
AFUDC equity and other flow-through |  | (4) |  |  | (7) |  |  | (9) |  |  | (14) |
Excess deferred tax amortization due to the Tax Act |  | (16) |  |  | (15) |  |  | (32) |  |  | (31) |
Valuation allowances |  | — |  |  | — |  |  | — |  |  | 34 |
Remeasurement of state deferred taxes |  | — |  |  | — |  |  | — |  |  | (26) |
Other, net |  | 6 |  |  | 3 |  |  | 9 |  |  | (4) |
Total income taxes |  | $ | 74 |  |  | $ | 49 |  |  | $ | 164 |  |  | $ | 132 |
Effective income tax rate |  | 22.6 | % |  | 20.3 | % |  | 22.5 | % |  | 21.6 | %

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 12 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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