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v3.23.1

Rate Matters and Regulation - Additional Information (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2023 USD ($)
Estimated Refund to SPP | $ 13.0
ARKANSAS [Member] |
Public Utilities, Requested Rate Increase (Decrease), Amount | 9.6
Impact to Company [Member] |
Estimated Refund to SPP | 5.0
Customer Impact [Member] |
Estimated Refund to SPP | $ 8.0

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- Definition Estimated Refund to SPP + References No definition available. + Details
Name: | oge_EstimatedRefundtoSPP
Namespace Prefix: | oge_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of public utility's requested rate increase (decrease) with regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | dei_EntityByLocationAxis=stpr_AR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oge_EstimatedRefundtoSPPAxis=oge_ImpacttoCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oge_EstimatedRefundtoSPPAxis=oge_CustomerImpactMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |