XML 66 R59.htm IDEA: XBRL DOCUMENT
v3.24.3

Rate Matters and Regulation - Additional Information (Details) $ in Millions |  |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 12, 2024 USD ($) | Mar. 07, 2024 USD ($) | Jan. 19, 2024 Megawattsday | Dec. 29, 2023 USD ($) | Jan. 31, 2023 | Dec. 31, 2028 Megawattsday | Dec. 31, 2027 Megawattsday | Dec. 31, 2026 Megawattsday | Sep. 30, 2024 USD ($)
Estimated Refund to SPP |  |  |  |  |  |  |  |  | $ 13.0
Requested Recovery of Capital Investment |  |  |  | $ 1,300.0 |  |  |  |  |
Recovery of regulatory asset period |  |  |  |  | 10 years |  |  |  |
Pre-tax weighted average cost of capital percentage |  |  |  |  | 6.49% |  |  |  |
Arkansas Public Service Commission [Member] |  |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  | $ 3.5 |  |  |  |  |  |  |
Arkansas 2024 Generation Construction Notice Filing |  |  |  |  |  |  |  |  |
Energy generation capacity | Megawattsday |  |  | 96 |  |  |  |  |  |
Integrated Resource Plans [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |
Energy generation capacity | Megawattsday |  |  |  |  |  | 1,096 | 431 | 556 |
OKLAHOMA [Member] |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount | $ 126.7 |  |  | $ 332.5 |  |  |  |  |
Public Utilities, Requested Return on Equity, Percentage |  |  |  | 10.50% |  |  |  |  |
Common Equity Percentage which ROE is based |  |  |  | 53.50% |  |  |  |  |
Impact to Company [Member] |  |  |  |  |  |  |  |  |
Estimated Refund to SPP |  |  |  |  |  |  |  |  | 5.0
Customer Impact [Member] |  |  |  |  |  |  |  |  |
Estimated Refund to SPP |  |  |  |  |  |  |  |  | $ 8.0

X
- Definition Common Equity Percentage which ROE is based + References No definition available. + Details
Name: | oge_CommonEquityPercentageWhichROEIsBased
Namespace Prefix: | oge_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Energy generation capacity. + References No definition available. + Details
Name: | oge_EnergyGenerationCapacity
Namespace Prefix: | oge_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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 Pre-tax weighted average cost of capital percentage. + References No definition available. + Details
Name: | oge_PreTaxWeightedAverageCostOfCapitalPercentage
Namespace Prefix: | oge_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Recovery of regulatory asset period. + References No definition available. + Details
Name: | oge_RecoveryOfRegulatoryAssetPeriod
Namespace Prefix: | oge_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Requested Recovery of Capital Investment + References No definition available. + Details
Name: | oge_RequestedRecoveryOfCapitalInvestment
Namespace Prefix: | oge_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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
- Definition Percentage of public utility's requested return on equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=oge_ArkansasPublicServiceCommissionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=oge_ArkansasTwoThousandTwentyFourGenerationConstructionNoticeFilingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis=oge_IntegratedResourcePlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_EntityByLocationAxis=stpr_OK
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: |