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Long-Term Debt (Additional Information) (Details) - USD ($) $ in Millions |  |  |  | 9 Months Ended
--- | --- | --- | --- | ---
Oct. 02, 2024 | Aug. 15, 2024 | May 09, 2024 | Sep. 30, 2024
Debt Instrument [Line Items] |  |  |  |
Percent of Principal Amount Subject to Optional Tender |  |  |  | 100.00%
Garfield Industrial Authority Bond [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, maturity date |  |  |  | Jan. 01, 2025
Term Loan [Member] | Series Due May 24, 2025 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 6.46%
OGE Energy [Member] | Series Due May 24, 2025 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long term debt |  |  |  | $ 120.0
OGE Energy [Member] | Senior Notes due May 15, 2029 | Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long term debt |  |  | $ 350.0 |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 5.45% |
Debt instrument, maturity date |  |  | May 15, 2029 |
OGE Energy [Member] | Senior Notes due April 1, 2053 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long term debt |  | $ 350.0 |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.60% |  |
Debt instrument, maturity date |  | Apr. 01, 2053 |  |
Aggregate total principal amount |  | $ 700.0 |  |
OGE Energy [Member] | Garfield Industrial Authority Bond [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long term debt |  |  |  | 47.0
OGE Energy [Member] | Garfield Industrial Authority Bond [Member] | Senior Notes [Member] | Subsequent Event [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long term debt | $ 47.0 |  |  |
Debt instrument, maturity date | Oct. 01, 2039 |  |  |
OGE Energy [Member] | Term Loan [Member] | Series Due May 24, 2025 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long term debt |  |  |  | 60.0
Term loan available amount |  |  |  | 60.0
OGE Energy [Member] | Credit Facility [Member] | Series Due May 24, 2025 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long term debt |  |  |  | $ 60.0

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