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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Taxes [Line Items] |  |  |  |
Statutory federal tax rate |  | 21.00% | 21.00% | 21.00%
State income taxes, net of federal income tax benefit |  | (1.00%) | 0.90% | (1.40%)
Stock-based compensation |  | 0.00% | 0.10% | (0.30%)
Executive compensation limitation |  | 0.10% | 0.10% | 0.20%
Amortization of net unfunded deferred taxes |  | (3.20%) | (2.10%) | (4.40%)
Federal renewable energy credit | [1] | 0.00% | (2.00%) | (5.00%)
Remeasurement of state deferred taxes due to Energy Transfer merger | [2] | 0.00% | (1.10%) | 0.00%
Remeasurement of state deferred tax liabilities |  | (0.60%) | (0.60%) | 0.90%
401(k) dividends |  | (0.20%) | (0.20%) | (0.40%)
Impairment of OGE Energy's investment in Enable | [3] | 0.00% | 0.00% | 31.60%
Other |  | (0.40%) | 0.00% | 0.10%
Effective income tax rate |  | 15.70% | 16.10% | 42.30%
Og and E [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Statutory federal tax rate |  | 21.00% | 21.00% | 21.00%
State income taxes, net of federal income tax benefit |  | (0.40%) | (1.40%) | (1.60%)
Stock-based compensation |  | 0.00% | 0.00% | 0.00%
Executive compensation limitation |  | 0.00% | 0.00% |
Amortization of net unfunded deferred taxes |  | (5.00%) | (4.60%) | (4.80%)
Federal renewable energy credit | [1] | 0.00% | (4.40%) | (5.40%)
Remeasurement of state deferred taxes due to Energy Transfer merger | [2] | 0.00% | 0.00% | 0.00%
Remeasurement of state deferred tax liabilities |  | 0.00% | 0.00% | 0.00%
401(k) dividends |  | 0.00% | 0.00% | 0.00%
Impairment of OGE Energy's investment in Enable | [3] | 0.00% | 0.00% | 0.00%
Other |  | (0.80%) | (0.20%) | 0.10%
Effective income tax rate |  | 14.80% | 10.40% | 9.30%
[1] | Represents credits primarily associated with the production from OG&E's wind farms.
[2] | In connection with the Enable and Energy Transfer merger, the state income tax rates were expected to decrease, as Energy Transfer operates in significantly more states with generally lower tax rates than the historic Enable operating area.
[3] | As discussed in Note 1, OGE Energy recorded a $780.0 million impairment on its investment in Enable in March 2020, which resulted in a tax benefit being recorded that caused a significant variance to the effective tax rate. This variance has been presented in the table as a single line item in order to facilitate comparability of other components of the effective tax rate.

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