3.25.0.1 html 626 549 1 true 174 0 false 7 false false R1.htm 100000 - Document - Document and Entity Information Document Sheet http://www.oge.com/20241231/taxonomy/role/DocumentandEntityInformationDocument Document and Entity Information Document Cover 1 false false R2.htm 100010 - Statement - CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME Sheet http://www.oge.com/20241231/taxonomy/role/StatementConsolidatedStatementsOfIncomeAndComprehensiveIncome CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME Statements 2 false false R3.htm 100060 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Sheet http://www.oge.com/20241231/taxonomy/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statements 3 false false R4.htm 100080 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) Sheet http://www.oge.com/20241231/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeParenthetical CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) Statements 4 false false R5.htm 100090 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.oge.com/20241231/taxonomy/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 5 false false R6.htm 100100 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) Sheet http://www.oge.com/20241231/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsParenthetical CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) Statements 6 false false R7.htm 100110 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.oge.com/20241231/taxonomy/role/CONSOLIDATEDBALANCESHEETS CONSOLIDATED BALANCE SHEETS Statements 7 false false R8.htm 100120 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.oge.com/20241231/taxonomy/role/StatementConsolidatedBalanceSheetsParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 8 false false R9.htm 100130 - Statement - CONSOLIDATED STATEMENTS OF CAPITALIZATION Sheet http://www.oge.com/20241231/taxonomy/role/CONSOLIDATEDSTATEMENTSOFCAPITALIZATION CONSOLIDATED STATEMENTS OF CAPITALIZATION Statements 9 false false R10.htm 100140 - Statement - CONSOLIDATED STATEMENTS OF CAPITALIZATION (Parenthetical) Sheet http://www.oge.com/20241231/taxonomy/role/StatementConsolidatedStatementsOfCapitalizationParenthetical CONSOLIDATED STATEMENTS OF CAPITALIZATION (Parenthetical) Statements 10 false false R11.htm 100150 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Sheet http://www.oge.com/20241231/taxonomy/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Statements 11 false false R12.htm 100160 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) Sheet http://www.oge.com/20241231/taxonomy/role/StatementConsolidatedStatementsOfChangesInStockholdersEquityParenthetical CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) Statements 12 false false R13.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 13 false false R14.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 14 false false R15.htm 995447 - Disclosure - Insider Trading Policies and Procedures Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc Insider Trading Policies and Procedures Notes 15 false false R16.htm 995457 - Disclosure - Cybersecurity Risk Management, Strategy and Governance Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCybersecurityRiskManagementStrategyAndGovernance Cybersecurity Risk Management, Strategy and Governance Notes 16 false false R17.htm 995467 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.oge.com/20241231/taxonomy/role/SummaryofSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 17 false false R18.htm 995477 - Disclosure - Accounting Pronouncements Sheet http://www.oge.com/20241231/taxonomy/role/AccountingPronouncements Accounting Pronouncements Notes 18 false false R19.htm 995487 - Disclosure - Revenue Recognition Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRevenueRecognition Revenue Recognition Notes 19 false false R20.htm 995497 - Disclosure - Leases Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureLeases Leases Notes 20 false false R21.htm 995527 - Disclosure - Fair Value Measurements Sheet http://www.oge.com/20241231/taxonomy/role/FairValueMeasurements Fair Value Measurements Notes 21 false false R22.htm 995537 - Disclosure - Stock Based Compensation Sheet http://www.oge.com/20241231/taxonomy/role/StockBasedCompensation Stock Based Compensation Notes 22 false false R23.htm 995547 - Disclosure - Income Taxes Sheet http://www.oge.com/20241231/taxonomy/role/IncomeTaxes Income Taxes Notes 23 false false R24.htm 995557 - Disclosure - Common Equity Sheet http://www.oge.com/20241231/taxonomy/role/CommonEquity Common Equity Notes 24 false false R25.htm 995567 - Disclosure - Long-Term Debt Sheet http://www.oge.com/20241231/taxonomy/role/LongTermDebt Long-Term Debt Notes 25 false false R26.htm 995577 - Disclosure - Credit Facilities and Short-Term Debt Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCreditFacilitiesAndShorttermDebt1 Credit Facilities and Short-Term Debt Notes 26 false false R27.htm 995587 - Disclosure - Retirement Plans and Postretirement Benefit Plans Sheet http://www.oge.com/20241231/taxonomy/role/RetirementPlansandPostretirementBenefitPlans Retirement Plans and Postretirement Benefit Plans Notes 27 false false R28.htm 995597 - Disclosure - Report of Business Segments Sheet http://www.oge.com/20241231/taxonomy/role/ReportofBusinessSegments Report of Business Segments Notes 28 false false R29.htm 995607 - Disclosure - Commitments and Contingencies Sheet http://www.oge.com/20241231/taxonomy/role/CommitmentsandContingencies Commitments and Contingencies Notes 29 false false R30.htm 995617 - Disclosure - Rate Matters and Regulation Sheet http://www.oge.com/20241231/taxonomy/role/RateMattersandRegulation Rate Matters and Regulation Notes 30 false false R31.htm 995627 - Disclosure - Schedule II Sheet http://www.oge.com/20241231/taxonomy/role/ScheduleII Schedule II Notes 31 false false R32.htm 995637 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.oge.com/20241231/taxonomy/role/SummaryofSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.oge.com/20241231/taxonomy/role/SummaryofSignificantAccountingPolicies 32 false false R33.htm 995647 - Disclosure - Fair Value Measures and Disclosures (Policies) Sheet http://www.oge.com/20241231/taxonomy/role/FairValueMeasuresandDisclosuresPolicies Fair Value Measures and Disclosures (Policies) Policies http://www.oge.com/20241231/taxonomy/role/SummaryofSignificantAccountingPolicies 33 false false R34.htm 995657 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/SummaryofSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.oge.com/20241231/taxonomy/role/SummaryofSignificantAccountingPolicies 34 false false R35.htm 995667 - Disclosure - Revenue Recognition (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRevenueRecognitionTables Revenue Recognition (Tables) Tables http://www.oge.com/20241231/taxonomy/role/DisclosureRevenueRecognition 35 false false R36.htm 995677 - Disclosure - Leases (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureLeasesTables Leases (Tables) Tables http://www.oge.com/20241231/taxonomy/role/DisclosureLeases 36 false false R37.htm 995707 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.oge.com/20241231/taxonomy/role/FairValueMeasurements 37 false false R38.htm 995717 - Disclosure - Stock Based Compensation (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/StockBasedCompensationTables Stock Based Compensation (Tables) Tables http://www.oge.com/20241231/taxonomy/role/StockBasedCompensation 38 false false R39.htm 995727 - Disclosure - Income Taxes (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/IncomeTaxesTables Income Taxes (Tables) Tables http://www.oge.com/20241231/taxonomy/role/IncomeTaxes 39 false false R40.htm 995737 - Disclosure - Common Equity (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/CommonEquityTables Common Equity (Tables) Tables http://www.oge.com/20241231/taxonomy/role/CommonEquity 40 false false R41.htm 995747 - Disclosure - Long-Term Debt (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/LongTermDebtTables Long-Term Debt (Tables) Tables http://www.oge.com/20241231/taxonomy/role/LongTermDebt 41 false false R42.htm 995757 - Disclosure - Credit Facilities and Short-Term Debt (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCreditFacilitiesAndShorttermDebtTables Credit Facilities and Short-Term Debt (Tables) Tables http://www.oge.com/20241231/taxonomy/role/DisclosureCreditFacilitiesAndShorttermDebt1 42 false false R43.htm 995767 - Disclosure - Retirement Plans and Postretirement Benefit Plans (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/RetirementPlansandPostretirementBenefitPlansTables Retirement Plans and Postretirement Benefit Plans (Tables) Tables http://www.oge.com/20241231/taxonomy/role/RetirementPlansandPostretirementBenefitPlans 43 false false R44.htm 995777 - Disclosure - Report of Business Segments (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/ReportofBusinessSegmentsTables Report of Business Segments (Tables) Tables http://www.oge.com/20241231/taxonomy/role/ReportofBusinessSegments 44 false false R45.htm 995787 - Disclosure - Commitments and Contingencies (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/CommitmentsandContingenciesTables Commitments and Contingencies (Tables) Tables http://www.oge.com/20241231/taxonomy/role/CommitmentsandContingencies 45 false false R46.htm 995797 - Disclosure - Schedule II (Tables) Sheet http://www.oge.com/20241231/taxonomy/role/ScheduleIITables Schedule II (Tables) Tables http://www.oge.com/20241231/taxonomy/role/ScheduleII 46 false false R47.htm 995807 - Disclosure - Summary of Significant Accounting Policies - Schedule of Regulatory Assets and Liabilities (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfRegulatoryAssetsAndLiabilitiesDetails Summary of Significant Accounting Policies - Schedule of Regulatory Assets and Liabilities (Details) Details 47 false false R48.htm 995817 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails Summary of Significant Accounting Policies - Additional Information (Details) Details 48 false false R49.htm 995827 - Disclosure - Summary of Significant Accounting Policies - Summary of Components of Benefit Obligation (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesSummaryOfComponentsOfBenefitObligationDetails Summary of Significant Accounting Policies - Summary of Components of Benefit Obligation (Details) Details 49 false false R50.htm 995837 - Disclosure - Summary of Significant Accounting Policies - Schedule of Jointly Owned Utility Plants (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfJointlyOwnedUtilityPlantsDetails Summary of Significant Accounting Policies - Schedule of Jointly Owned Utility Plants (Details) Details 50 false false R51.htm 995847 - Disclosure - Summary of Significant Accounting Policies Property - Summary of OG&E's Ownership Interest in Jointly-owned Plant (Parenthetical) (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPropertySummaryOfOgesOwnershipInterestInJointlyownedPlantParentheticalDetails Summary of Significant Accounting Policies Property - Summary of OG&E's Ownership Interest in Jointly-owned Plant (Parenthetical) (Details) Details 51 false false R52.htm 995857 - Disclosure - Summary of Significant Accounting Policies Property - Summary of Property Plant and Equipment (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPropertySummaryOfPropertyPlantAndEquipmentDetails Summary of Significant Accounting Policies Property - Summary of Property Plant and Equipment (Details) Details 52 false false R53.htm 995867 - Disclosure - Summary of Significant Accounting Policies Property - Summary of Property Plant and Equipment (Parenthetical) (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPropertySummaryOfPropertyPlantAndEquipmentParentheticalDetails Summary of Significant Accounting Policies Property - Summary of Property Plant and Equipment (Parenthetical) (Details) Details 53 false false R54.htm 995907 - Disclosure - Summary of Significant Accounting Policies - Summary of Changes to Asset Retirement Obligation (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesSummaryOfChangesToAssetRetirementObligationDetails Summary of Significant Accounting Policies - Summary of Changes to Asset Retirement Obligation (Details) Details 54 false false R55.htm 995937 - Disclosure - Summary of Significant Accounting Policies - Summary of Accumulated Other Comprehensive Income (Loss) (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesSummaryOfAccumulatedOtherComprehensiveIncomeLossDetails Summary of Significant Accounting Policies - Summary of Accumulated Other Comprehensive Income (Loss) (Details) Details 55 false false R56.htm 995957 - Disclosure - Summary of Significant Accounting Policies - Summary of Amount Reclassified Out of Accumulated Other Comprehensive Income (Loss) (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesSummaryOfAmountReclassifiedOutOfAccumulatedOtherComprehensiveIncomeLossDetails Summary of Significant Accounting Policies - Summary of Amount Reclassified Out of Accumulated Other Comprehensive Income (Loss) (Details) Details 56 false false R57.htm 995987 - Disclosure - Summary of Significant Accounting Policies - Reconciliation of Equity in Earnings (Losses) of Unconsolidated Affiliates (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesReconciliationOfEquityInEarningsLossesOfUnconsolidatedAffiliatesDetails Summary of Significant Accounting Policies - Reconciliation of Equity in Earnings (Losses) of Unconsolidated Affiliates (Details) Details 57 false false R58.htm 996007 - Disclosure - Summary of Significant Accounting Policies Property - Schedule of Related Party Transactions (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPropertyScheduleOfRelatedPartyTransactionsDetails Summary of Significant Accounting Policies Property - Schedule of Related Party Transactions (Details) Details 58 false false R59.htm 996027 - Disclosure - Revenue Recognition (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRevenueRecognitionDetails Revenue Recognition (Details) Details http://www.oge.com/20241231/taxonomy/role/DisclosureRevenueRecognitionTables 59 false false R60.htm 996037 - Disclosure - Leases - Additional Information (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureLeasesAdditionalInformationDetails Leases - Additional Information (Details) Details 60 false false R61.htm 996047 - Disclosure - Leases - Schedule of Financial Statement Information of Lease Liabilities (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureLeasesScheduleOfFinancialStatementInformationOfLeaseLiabilitiesDetails Leases - Schedule of Financial Statement Information of Lease Liabilities (Details) Details 61 false false R62.htm 996057 - Disclosure - Leases - Schedule of Maturity Analysis of Operating Lease Liabilities (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureLeasesScheduleOfMaturityAnalysisOfOperatingLeaseLiabilitiesDetails Leases - Schedule of Maturity Analysis of Operating Lease Liabilities (Details) Details 62 false false R63.htm 996067 - Disclosure - Investment in Unconsolidated Affiliate (Details) Sheet http://www.oge.com/20241231/taxonomy/role/InvestmentinUnconsolidatedAffiliateDetails Investment in Unconsolidated Affiliate (Details) Details 63 false false R64.htm 996087 - Disclosure - Fair Value Measurements - Additional Information (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureFairValueMeasurementsAdditionalInformationDetails Fair Value Measurements - Additional Information (Details) Details 64 false false R65.htm 996097 - Disclosure - Fair Value Measurements - Summary of Financial Instrument Measured at Fair Value On A Recurring Basis and Carrying Amount and Fair Value (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureFairValueMeasurementsSummaryOfFinancialInstrumentMeasuredAtFairValueOnARecurringBasisAndCarryingAmountAndFairValueDetails Fair Value Measurements - Summary of Financial Instrument Measured at Fair Value On A Recurring Basis and Carrying Amount and Fair Value (Details) Details 65 false false R66.htm 996107 - Disclosure - Stock Based Compensation - Additional Information (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureStockBasedCompensationAdditionalInformationDetails Stock Based Compensation - Additional Information (Details) Details 66 false false R67.htm 996117 - Disclosure - Stock-Based Compensation - Schedule of Pre-tax Compensation Expense and Related Income Tax Benefit (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureStockbasedCompensationScheduleOfPretaxCompensationExpenseAndRelatedIncomeTaxBenefitDetails Stock-Based Compensation - Schedule of Pre-tax Compensation Expense and Related Income Tax Benefit (Details) Details 67 false false R68.htm 996127 - Disclosure - Stock-Based Compensation - Performance Units Total Shareholder Return Valuation Assumptions (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureStockbasedCompensationPerformanceUnitsTotalShareholderReturnValuationAssumptionsDetails Stock-Based Compensation - Performance Units Total Shareholder Return Valuation Assumptions (Details) Details 68 false false R69.htm 996137 - Disclosure - Stock-Based Compensation - Restricted Stock Valuation Assumptions (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureStockbasedCompensationRestrictedStockValuationAssumptionsDetails Stock-Based Compensation - Restricted Stock Valuation Assumptions (Details) Details 69 false false R70.htm 996147 - Disclosure - Stock-Based Compensation - Share-based Compensation, Activity (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureStockbasedCompensationSharebasedCompensationActivityDetails Stock-Based Compensation - Share-based Compensation, Activity (Details) Details 70 false false R71.htm 996157 - Disclosure - Stock-Based Compensation - Share-based Compensation, Activity (Parenthetical) (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureStockbasedCompensationSharebasedCompensationActivityParentheticalDetails Stock-Based Compensation - Share-based Compensation, Activity (Parenthetical) (Details) Details 71 false false R72.htm 996167 - Disclosure - Stock-Based Compensation - Schedule of Nonvested Share Activity (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureStockbasedCompensationScheduleOfNonvestedShareActivityDetails Stock-Based Compensation - Schedule of Nonvested Share Activity (Details) Details 72 false false R73.htm 996177 - Disclosure - Stock-Based Compensation - Schedule of Nonvested Share Activity (Parenthetical) (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureStockbasedCompensationScheduleOfNonvestedShareActivityParentheticalDetails Stock-Based Compensation - Schedule of Nonvested Share Activity (Parenthetical) (Details) Details 73 false false R74.htm 996187 - Disclosure - Stock-Based Compensation - Fair Value of Vested Performance Units and Restricted Stock (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureStockbasedCompensationFairValueOfVestedPerformanceUnitsAndRestrictedStockDetails Stock-Based Compensation - Fair Value of Vested Performance Units and Restricted Stock (Details) Details 74 false false R75.htm 996197 - Disclosure - Stock-Based Compensation - Schedule of Unrecognized Compensation Cost, Nonvested Awards (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureStockbasedCompensationScheduleOfUnrecognizedCompensationCostNonvestedAwardsDetails Stock-Based Compensation - Schedule of Unrecognized Compensation Cost, Nonvested Awards (Details) Details 75 false false R76.htm 996207 - Disclosure - Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureIncomeTaxesScheduleOfComponentsOfIncomeTaxExpenseBenefitDetails Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) Details 76 false false R77.htm 996217 - Disclosure - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureIncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetails Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) Details 77 false false R78.htm 996237 - Disclosure - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureIncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) Details 78 false false R79.htm 996247 - Disclosure - Income Taxes (Additional Information) (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureIncomeTaxesAdditionalInformationDetails Income Taxes (Additional Information) (Details) Details http://www.oge.com/20241231/taxonomy/role/IncomeTaxesTables 79 false false R80.htm 996257 - Disclosure - Income Taxes - Schedule of Unrecognized Tax Benefits Roll Forward (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureIncomeTaxesScheduleOfUnrecognizedTaxBenefitsRollForwardDetails Income Taxes - Schedule of Unrecognized Tax Benefits Roll Forward (Details) Details 80 false false R81.htm 996267 - Disclosure - Income Taxes - Summary of Tax Credit Carryforwards (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureIncomeTaxesSummaryOfTaxCreditCarryforwardsDetails Income Taxes - Summary of Tax Credit Carryforwards (Details) Details 81 false false R82.htm 996277 - Disclosure - Common Equity - Automatic Dividend Reinvestment and Stock Purchase Plan - Additional Information (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCommonEquityAutomaticDividendReinvestmentAndStockPurchasePlanAdditionalInformationDetails Common Equity - Automatic Dividend Reinvestment and Stock Purchase Plan - Additional Information (Details) Details 82 false false R83.htm 996287 - Disclosure - Common Equity - Schedule of Earnings Per Share Basic and Diluted (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCommonEquityScheduleOfEarningsPerShareBasicAndDilutedDetails Common Equity - Schedule of Earnings Per Share Basic and Diluted (Details) Details 83 false false R84.htm 996297 - Disclosure - Common Equity - Dividends Restriction (Additional Information) (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCommonEquityDividendsRestrictionAdditionalInformationDetails Common Equity - Dividends Restriction (Additional Information) (Details) Details 84 false false R85.htm 996307 - Disclosure - Long-Term Debt (Additional Information) (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureLongtermDebtAdditionalInformationDetails Long-Term Debt (Additional Information) (Details) Details http://www.oge.com/20241231/taxonomy/role/LongTermDebtTables 85 false false R86.htm 996317 - Disclosure - Long-Term Debt - Schedule of Long-term Debt Instruments (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureLongtermDebtScheduleOfLongtermDebtInstrumentsDetails Long-Term Debt - Schedule of Long-term Debt Instruments (Details) Details 86 false false R87.htm 996327 - Disclosure - Credit Facilities and Short-Term Debt - Additional Information (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCreditFacilitiesAndShorttermDebtAdditionalInformationDetails Credit Facilities and Short-Term Debt - Additional Information (Details) Details 87 false false R88.htm 996337 - Disclosure - Credit Facilities and Short-Term Debt - Schedule of Line of Credit Facilities (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCreditFacilitiesAndShorttermDebtScheduleOfLineOfCreditFacilitiesDetails Credit Facilities and Short-Term Debt - Schedule of Line of Credit Facilities (Details) Details 88 false false R89.htm 996347 - Disclosure - Credit Facilities and Short-Term Debt - Schedule of Line of Credit Facilities (Parenthetical) (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCreditFacilitiesAndShorttermDebtScheduleOfLineOfCreditFacilitiesParentheticalDetails Credit Facilities and Short-Term Debt - Schedule of Line of Credit Facilities (Parenthetical) (Details) Details 89 false false R90.htm 996357 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Additional Information (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRetirementPlansAndPostretirementBenefitPlansAdditionalInformationDetails Retirement Plans and Postretirement Benefit Plans - Additional Information (Details) Details 90 false false R91.htm 996367 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRetirementPlansAndPostretirementBenefitPlansScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsDetails Retirement Plans and Postretirement Benefit Plans - Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets (Details) Details 91 false false R92.htm 996377 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Defined Benefit Plans Disclosures (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRetirementPlansAndPostretirementBenefitPlansScheduleOfDefinedBenefitPlansDisclosuresDetails Retirement Plans and Postretirement Benefit Plans - Schedule of Defined Benefit Plans Disclosures (Details) Details 92 false false R93.htm 996387 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Capitalized Pension and Postretirement Cost (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRetirementPlansAndPostretirementBenefitPlansScheduleOfCapitalizedPensionAndPostretirementCostDetails Retirement Plans and Postretirement Benefit Plans - Schedule of Capitalized Pension and Postretirement Cost (Details) Details 93 false false R94.htm 996397 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Assumptions Used (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRetirementPlansAndPostretirementBenefitPlansScheduleOfAssumptionsUsedDetails Retirement Plans and Postretirement Benefit Plans - Schedule of Assumptions Used (Details) Details 94 false false R95.htm 996407 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Projected Benefit Obligation Funded Status Thresholds (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRetirementPlansAndPostretirementBenefitPlansProjectedBenefitObligationFundedStatusThresholdsDetails Retirement Plans and Postretirement Benefit Plans - Projected Benefit Obligation Funded Status Thresholds (Details) Details 95 false false R96.htm 996417 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Defined Benefit Plan, Plan Assets, Category (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRetirementPlansAndPostretirementBenefitPlansDefinedBenefitPlanPlanAssetsCategoryDetails Retirement Plans and Postretirement Benefit Plans - Defined Benefit Plan, Plan Assets, Category (Details) Details 96 false false R97.htm 996427 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Expected Benefit Payments (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRetirementPlansAndPostretirementBenefitPlansScheduleOfExpectedBenefitPaymentsDetails Retirement Plans and Postretirement Benefit Plans - Schedule of Expected Benefit Payments (Details) Details 97 false false R98.htm 996437 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Allocation of Plan Assets (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRetirementPlansAndPostretirementBenefitPlansScheduleOfAllocationOfPlanAssetsDetails Retirement Plans and Postretirement Benefit Plans - Schedule of Allocation of Plan Assets (Details) Details 98 false false R99.htm 996447 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Summary of Reconciliation of Postretirement Benefit Plans Investments (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRetirementPlansAndPostretirementBenefitPlansSummaryOfReconciliationOfPostretirementBenefitPlansInvestmentsDetails Retirement Plans and Postretirement Benefit Plans - Summary of Reconciliation of Postretirement Benefit Plans Investments (Details) Details 99 false false R100.htm 996457 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Summary of Gross Benefit Payments Registrants Expect to Pay (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRetirementPlansAndPostretirementBenefitPlansSummaryOfGrossBenefitPaymentsRegistrantsExpectToPayDetails Retirement Plans and Postretirement Benefit Plans - Summary of Gross Benefit Payments Registrants Expect to Pay (Details) Details 100 false false R101.htm 996467 - Disclosure - Report of Business Segments - Additional Information (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureReportOfBusinessSegmentsAdditionalInformationDetails Report of Business Segments - Additional Information (Details) Details 101 false false R102.htm 996477 - Disclosure - Report of Business Segments - Summary of OGE Energy's Business Segments (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureReportOfBusinessSegmentsSummaryOfOgeEnergysBusinessSegmentsDetails Report of Business Segments - Summary of OGE Energy's Business Segments (Details) Details 102 false false R103.htm 996487 - Disclosure - Commitments and Contingencies - Additional Information (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformationDetails Commitments and Contingencies - Additional Information (Details) Details 103 false false R104.htm 996497 - Disclosure - Commitments and Contingencies - Unrecorded Unconditional Purchase Obligations Disclosure (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCommitmentsAndContingenciesUnrecordedUnconditionalPurchaseObligationsDisclosureDetails Commitments and Contingencies - Unrecorded Unconditional Purchase Obligations Disclosure (Details) Details 104 false false R105.htm 996507 - Disclosure - Commitments and Contingencies - Schedule of Wind Purchased Power (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureCommitmentsAndContingenciesScheduleOfWindPurchasedPowerDetails Commitments and Contingencies - Schedule of Wind Purchased Power (Details) Details 105 false false R106.htm 996517 - Disclosure - Rate Matters and Regulation - Additional Information (Details) Sheet http://www.oge.com/20241231/taxonomy/role/DisclosureRateMattersAndRegulationAdditionalInformationDetails Rate Matters and Regulation - Additional Information (Details) Details 106 false false R107.htm 996527 - Disclosure - Schedule II (Details) Sheet http://www.oge.com/20241231/taxonomy/role/ScheduleIIDetails Schedule II (Details) Details http://www.oge.com/20241231/taxonomy/role/ScheduleIITables 107 false false All Reports Book All Reports oge-20241231.htm oge-20241231.xsd img209174911_0.jpg http://fasb.org/srt/2024 http://fasb.org/us-gaap/2024 http://xbrl.sec.gov/cyd/2024 http://xbrl.sec.gov/dei/2024 http://xbrl.sec.gov/ecd/2024 false false