XML 66 R58.htm IDEA: XBRL DOCUMENT
v3.26.1

Rate Matters and Regulation - Additional Information (Details) $ in Millions | Jun. 30, 2026 USD ($)
--- | ---
Rate Matters and Regulation [Line Items] |
Estimated Refund to SPP | $ 14
Impact to Company [Member] |
Rate Matters and Regulation [Line Items] |
Estimated Refund to SPP | 4
Customer Impact [Member] |
Rate Matters and Regulation [Line Items] |
Estimated Refund to SPP | $ 10

X
- 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 Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesGeneralDisclosuresLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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: |