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Revenue Recognition (Tables) | 9 Months Ended
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Sep. 30, 2025
Revenues from Contract with Customers [Abstract] |
Disaggregation of Revenue | The following table presents OG&E's revenues from contracts with customers disaggregated by customer classification. OG&E's operating revenues disaggregated by customer classification can be found in "OG&E (Electric Company) Results of Operations" within "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations."
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(In millions) |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Residential |  | $ | 399.2 |  |  | $ | 412.6 |  |  | $ | 934.1 |  |  | $ | 873.0 |
Commercial |  |  | 314.0 |  |  |  | 282.4 |  |  |  | 739.1 |  |  |  | 608.8 |
Industrial |  |  | 80.5 |  |  |  | 77.5 |  |  |  | 200.5 |  |  |  | 185.7 |
Oilfield |  |  | 73.0 |  |  |  | 67.8 |  |  |  | 184.9 |  |  |  | 165.1 |
Public authorities and street light |  |  | 86.2 |  |  |  | 85.0 |  |  |  | 208.9 |  |  |  | 193.7 |
System sales revenues |  |  | 952.9 |  |  |  | 925.3 |  |  |  | 2,267.5 |  |  |  | 2,026.3 |
Provision for rate refund |  |  | — |  |  |  | (43.5 | ) |  |  | 3.0 |  |  |  | (43.5 | )
Integrated market |  |  | 23.6 |  |  |  | 19.2 |  |  |  | 71.2 |  |  |  | 51.3 |
Transmission |  |  | 38.8 |  |  |  | 36.6 |  |  |  | 120.7 |  |  |  | 114.7 |
Other |  |  | 13.1 |  |  |  | 7.6 |  |  |  | 26.8 |  |  |  | 23.1 |
Revenues from contracts with customers |  | $ | 1,028.4 |  |  | $ | 945.2 |  |  | $ | 2,489.2 |  |  | $ | 2,171.9 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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