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Stock-Based Compensation - Schedule of Nonvested Share Activity (Details) - $ / shares | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Equity Instruments Other than Options, Forfeited in Period |  | (46,753) |  |
Performance Units [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Equity Instruments Other than Options, Nonvested, Number, Beginning Balance |  | 417,446 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted | [1] | 275,499 |  |
Equity Instruments Other than Options, Vested in Period |  | (191,918) |  |
Equity Instruments Other than Options, Forfeited in Period |  | (46,753) |  |
Equity Instruments Other than Options, Nonvested, Number, Ending Balance |  | 454,274 | 417,446 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance |  | $ 42.44 |  |
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value |  | 35.86 |  |
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value |  | 41.1 |  |
Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value |  | 39.85 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance |  | $ 39.28 | $ 42.44 |
Performance Units [Member] | Og and E [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Equity Instruments Other than Options, Nonvested, Number, Beginning Balance |  | 120,331 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted | [1] | 275,499 |  |
Equity Instruments Other than Options, Vested in Period |  | (191,918) |  |
Equity Instruments Other than Options, Forfeited in Period |  | (46,753) |  |
Equity Other Than Options, Employee Migration | [2] | 297,115 |  |
Equity Instruments Other than Options, Nonvested, Number, Ending Balance |  | 454,274 | 120,331 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance |  | $ 42.49 |  |
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value |  | 35.86 |  |
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value |  | 41.1 |  |
Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value |  | 39.85 |  |
Equity Other Than Options, Employee Migration, Weighted Average Grant Date Fair Value |  | 42.42 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance |  | $ 39.28 | $ 42.49 |
Restricted Stock [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Equity Instruments Other than Options, Nonvested, Number, Beginning Balance |  | 223,146 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted |  | 148,345 | 114,926 | 116,539
Equity Instruments Other than Options, Vested in Period |  | (101,130) |  |
Equity Instruments Other than Options, Forfeited in Period |  | (26,307) |  |
Equity Instruments Other than Options, Nonvested, Number, Ending Balance |  | 244,054 | 223,146 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance |  | $ 36.64 |  |
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value |  | 32.74 | $ 37.52 | $ 35.72
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value |  | 41.29 |  |
Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value |  | 35.13 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance |  | $ 34.81 | $ 36.64 |
Restricted Stock [Member] | Og and E [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Equity Instruments Other than Options, Nonvested, Number, Beginning Balance |  | 64,244 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted |  | 148,345 | 35,034 | 32,804
Equity Instruments Other than Options, Vested in Period |  | (101,130) |  |
Equity Instruments Other than Options, Forfeited in Period |  | (26,307) |  |
Equity Other Than Options, Employee Migration | [2] | 158,902 |  |
Equity Instruments Other than Options, Nonvested, Number, Ending Balance |  | 244,054 | 64,244 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance |  | $ 36.68 |  |
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value |  | 32.74 | $ 37.52 | $ 35.72
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value |  | 41.29 |  |
Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value |  | 35.13 |  |
Equity Other Than Options, Employee Migration, Weighted Average Grant Date Fair Value |  | 36.62 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance |  | $ 34.81 | $ 36.68 |
[1] | For performance units, this represents the target number of performance units granted. Actual number of performance units earned, if any, is dependent upon performance and may range from zero percent to 200 percent of the target.
[2] | As a result of OGE Energy's exit of its former midstream business and becoming primarily an electric company, all employees are directly employed by OG&E beginning in 2024.

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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