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v3.25.3

Rate Matters and Regulation - Additional Information (Details) - USD ($) $ in Millions | May 15, 2025 | Jun. 12, 2024 | Sep. 30, 2025
--- | --- | --- | ---
CWIP incentive and abandoned plant incentive cost | $ 250.0 |  |
Estimated Refund to SPP |  |  | $ 14.0
OKLAHOMA [Member] |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  | $ 126.7 |
Impact to Company [Member] |  |  |
Estimated Refund to SPP |  |  | 4.0
Customer Impact [Member] |  |  |
Estimated Refund to SPP |  |  | $ 10.0

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- Definition Construction work in progress incentive and abandonment incentive cost. + References No definition available. + Details
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Namespace Prefix: | oge_
Data Type: | xbrli:monetaryItemType
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- Definition Estimated Refund to SPP + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of public utility's requested rate increase (decrease) with regulatory agency. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Details
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Namespace Prefix: |
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- Details
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- Details
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Period Type: |