75000 - Document - Document and Entity Information Document
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75010 - Statement - CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME
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75020 - Statement - CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME 2
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75030 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
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75040 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical)
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75050 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS
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75060 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)
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75070 - Statement - CONSOLIDATED BALANCE SHEETS
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75080 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)
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75090 - Statement - CONSOLIDATED STATEMENTS OF CAPITALIZATION
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75100 - Statement - CONSOLIDATED STATEMENTS OF CAPITALIZATION 2
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75110 - Statement - CONSOLIDATED STATEMENTS OF CAPITALIZATION (Parenthetical)
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75120 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
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75130 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)
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995457 - Disclosure - Cybersecurity Risk Management, Strategy and Governance
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995467 - Disclosure - Summary of Significant Accounting Policies
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995477 - Disclosure - Accounting Pronouncements
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995487 - Disclosure - Revenue Recognition
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995497 - Disclosure - Leases
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995507 - Disclosure - Investment in Unconsolidated Affiliate
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995517 - Disclosure - Related Party Disclosures
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995527 - Disclosure - Fair Value Measurements
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995537 - Disclosure - Stock Based Compensation
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995547 - Disclosure - Income Taxes
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995557 - Disclosure - Common Equity
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995567 - Disclosure - Long-Term Debt
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995577 - Disclosure - Credit Facilities and Short-Term Debt
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995587 - Disclosure - Retirement Plans and Postretirement Benefit Plans
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995597 - Disclosure - Report of Business Segments
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995607 - Disclosure - Commitments and Contingencies
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995617 - Disclosure - Rate Matters and Regulation
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995627 - Disclosure - Schedule II
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995637 - Disclosure - Summary of Significant Accounting Policies (Policies)
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995647 - Disclosure - Fair Value Measures and Disclosures (Policies)
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995657 - Disclosure - Summary of Significant Accounting Policies (Tables)
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995667 - Disclosure - Revenue Recognition (Tables)
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995677 - Disclosure - Leases (Tables)
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995687 - Disclosure - Investment in Unconsolidated Affiliate (Tables)
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995697 - Disclosure - Related Party Disclosures (Tables)
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995707 - Disclosure - Fair Value Measurements (Tables)
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995717 - Disclosure - Stock Based Compensation (Tables)
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995727 - Disclosure - Income Taxes (Tables)
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995737 - Disclosure - Common Equity (Tables)
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995747 - Disclosure - Long-Term Debt (Tables)
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995757 - Disclosure - Credit Facilities and Short-Term Debt (Tables)
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995767 - Disclosure - Retirement Plans and Postretirement Benefit Plans (Tables)
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995777 - Disclosure - Report of Business Segments (Tables)
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995787 - Disclosure - Commitments and Contingencies (Tables)
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995797 - Disclosure - Schedule II (Tables)
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995807 - Disclosure - Summary of Significant Accounting Policies - Schedule of Regulatory Assets and Liabilities (Details)
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995817 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details)
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995827 - Disclosure - Summary of Significant Accounting Policies - Summary of Components of Benefit Obligation (Details)
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995837 - Disclosure - Summary of Significant Accounting Policies - Schedule of Jointly Owned Utility Plants (Details)
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995847 - Disclosure - Summary of Significant Accounting Policies Property - Summary of OG&E's Ownership Interest in Jointly-owned Plant (Parenthetical) (Details)
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995857 - Disclosure - Summary of Significant Accounting Policies Property - Summary of Property Plant and Equipment (Details)
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995867 - Disclosure - Summary of Significant Accounting Policies Property - Summary of Property Plant and Equipment (Parenthetical) (Details)
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995877 - Disclosure - Summary of Significant Accounting Policies - Summary of Changes to Asset Retirement Obligation (Details)
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995887 - Disclosure - Summary of Significant Accounting Policies Enviromental Costs (Details)
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995897 - Disclosure - Summary of Significant Accounting Policies Allowance for Funds Used During Construction (Details)
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995907 - Disclosure - Summary of Significant Accounting Policies - Summary of Accumulated Other Comprehensive Income (Loss) (Details)
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995917 - Disclosure - Summary of Significant Accounting Policies - Summary of Amount Reclassified Out of Accumulated Other Comprehensive Income (Loss) (Details)
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995927 - Disclosure - Summary of Significant Accounting Policies - Summarized Balance Sheet Information for Equity Method Investment (Details)
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995937 - Disclosure - Summary of Significant Accounting Policies - Summarized Income Statement Information for Equity Method Investment (Details)
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995947 - Disclosure - Summary of Significant Accounting Policies - Reconciliation of Equity in Earnings (Losses) of Unconsolidated Affiliates (Details)
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995957 - Disclosure - Summary of Significant Accounting Policies - Reconciliation of Equity in Earnings (Losses) of Unconsolidated Affiliates (Parenthetical) (Details)
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995967 - Disclosure - Summary of Significant Accounting Policies Property - Schedule of Related Party Transactions (Details)
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995977 - Disclosure - Accounting Pronouncements - Additional Information (Details)
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995987 - Disclosure - Revenue Recognition (Details)
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995997 - Disclosure - Leases - Additional Information (Details)
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996007 - Disclosure - Leases - Schedule of Financial Statement Information of Lease Liabilities (Details)
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996017 - Disclosure - Leases - Schedule of Maturity Analysis of Operating Lease Liabilities (Details)
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996027 - Disclosure - Leases - Schedule of Maturity Analysis of Operating Lease Liabilities (Details) 2
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996037 - Disclosure - Investment in Unconsolidated Affiliate (Details)
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996047 - Disclosure - Related Party Disclosures (Details)
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996057 - Disclosure - Fair Value Measurements - Additional Information (Details)
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996067 - Disclosure - Fair Value Measurements - Summary of Financial Instrument Measured at Fair Value On A Recurring Basis and Carrying Amount and Fair Value (Details)
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996077 - Disclosure - Stock Based Compensation - Additional Information (Details)
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996087 - Disclosure - Stock-Based Compensation - Schedule of Pre-tax Compensation Expense and Related Income Tax Benefit (Details)
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996097 - Disclosure - Stock-Based Compensation - Performance Units Total Shareholder Return Valuation Assumptions (Details)
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996107 - Disclosure - Stock-Based Compensation - Restricted Stock Valuation Assumptions (Details)
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996117 - Disclosure - Stock-Based Compensation - Share-based Compensation, Activity (Details)
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996127 - Disclosure - Stock-Based Compensation - Share-based Compensation, Activity (Parenthetical) (Details)
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996137 - Disclosure - Stock-Based Compensation - Schedule of Nonvested Share Activity (Details)
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996147 - Disclosure - Stock-Based Compensation - Schedule of Nonvested Share Activity (Parenthetical) (Details)
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996157 - Disclosure - Stock-Based Compensation - Fair Value of Vested Performance Units and Restricted Stock (Details)
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996167 - Disclosure - Stock-Based Compensation - Schedule of Unrecognized Compensation Cost, Nonvested Awards (Details)
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996177 - Disclosure - Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details)
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996187 - Disclosure - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)
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996197 - Disclosure - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) (Parenthetical) (Details)
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996207 - Disclosure - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details)
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996217 - Disclosure - Income Taxes (Additional Information) (Details)
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996227 - Disclosure - Income Taxes - Schedule of Unrecognized Tax Benefits Roll Forward (Details)
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996237 - Disclosure - Income Taxes - Summary of Tax Credit Carryforwards (Details)
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996247 - Disclosure - Common Equity - Automatic Dividend Reinvestment and Stock Purchase Plan - Additional Information (Details)
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996257 - Disclosure - Common Equity - Common Stock Public Offering and Forward Equity Sale Agreements - Additional Information (Details)
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996267 - Disclosure - Common Equity - Schedule of Earnings Per Share Basic and Diluted (Details)
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996277 - Disclosure - Common Equity - Dividends Restriction (Additional Information) (Details)
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996287 - Disclosure - Long-Term Debt (Additional Information) (Details)
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996297 - Disclosure - Long-Term Debt - Schedule of Long-term Debt Instruments (Details)
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996307 - Disclosure - Credit Facilities and Short-Term Debt - Additional Information (Details)
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996317 - Disclosure - Credit Facilities and Short-Term Debt - Schedule of Line of Credit Facilities (Details)
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996327 - Disclosure - Credit Facilities and Short-Term Debt - Schedule of Line of Credit Facilities (Parenthetical) (Details)
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996337 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Additional Information (Details)
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996347 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets (Details)
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996357 - Disclosure - Retirement Plans and Postretirement Benefit Plans (Details)
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996367 - Disclosure - Retirement Plans and Postretirement Benefit Plans (Details) 2
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996377 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Capitalized Pension and Postretirement Cost (Details)
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996387 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Assumptions Used (Details)
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996397 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Projected Benefit Obligation Funded Status Thresholds (Details)
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996407 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Defined Benefit Plan, Plan Assets, Category (Details)
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996417 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Expected Benefit Payments (Details)
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996427 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Allocation of Plan Assets (Details)
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996437 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Summary of Reconciliation of Postretirement Benefit Plans Investments (Details)
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996447 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Summary of Gross Benefit Payments Registrants Expect to Pay (Details)
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996457 - Disclosure - Report of Business Segments - Additional Information (Details)
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996467 - Disclosure - Report of Business Segments - Summary of OGE Energy's Business Segments (Details)
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996477 - Disclosure - Report of Business Segments - Summary of OGE Energy's Business Segments (Details) 2
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996487 - Disclosure - Commitments and Contingencies - Additional Information (Details)
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996497 - Disclosure - Commitments and Contingencies - Unrecorded Unconditional Purchase Obligations Disclosure (Details)
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996507 - Disclosure - Commitments and Contingencies - Schedule of Wind Purchased Power (Details)
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996517 - Disclosure - Rate Matters and Regulation - Additional Information (Details)
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996527 - Disclosure - Schedule II (Details)
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Deferred federal investment tax credits
Non-Current Deferred Tax Assets, Deferred Federal Investment Tax Credits
Non-Current Deferred Tax Assets, Deferred Federal Investment Tax Credits
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Retirement Plan Type [Axis]
Retirement Plan Type [Axis]
Deferred Plant Expense
Deferred Plant Expense [Member]
Deferred Plant Expense
Segments [Domain]
Segments [Domain]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Beginning Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Ending Balance
Environmental Costs, Policy [Policy Text Block]
Environmental Costs, Policy [Policy Text Block]
Environmental Costs
Unrecorded Unconditional Purchase Obligation, Due within Three Years
Unrecorded Unconditional Purchase Obligation, to be Paid, Year Three
Schedule of Related Party Transactions [Table Text Block]
Schedule of Related Party Transactions [Table Text Block]
Schedule of Related Party Transactions
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Grid Enhancement
Grid Enhancement [Member]
Grid Enhancement
Employer contributions
Defined Benefit Plan, Plan Assets, Contributions by Employer
Oklahoma demand program rider under recovery [Member]
Oklahoma demand program rider under recovery [Member]
Oklahoma demand program rider under recovery[Member]
Accounts payable
Increase (Decrease) in Accounts Payable
Increase (Decrease) in Accounts Payable, Total
Revenues from Alternative Revenue Programs
Revenues from Alternative Revenue Programs
Revenues from Alternative Revenue Programs
Other revenues
Series Due November 24, 2017 [Member]
Series Due November 24, 2017 [Member]
Series Due November 24, 2017 [Member]
Total long-term debt (excluding long-term debt due within one year)
Long-Term Debt, Excluding Current Maturities
Long-Term Debt, Excluding Current Maturities, Total
LONG-TERM DEBT
Schedule of Long-term Debt Instruments [Table Text Block]
Schedule of Long-Term Debt Instruments [Table Text Block]
Schedule of Long-term Debt Instruments
Plan Name [Axis]
Plan Name [Axis]
Collection of Sales Tax, Policy [Policy Text Block]
Collection of sales tax policy [Policy Text Block]
Collection of sales tax policy [Policy Text Block]
Collection of Sales Tax
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Weighted-Average Interest Crediting Rate
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Weighted-Average Interest Crediting Rate
Rate Matters and Regulation [Table]
Equity [Abstract]
Equity [Abstract]
Rate Matters and Regulation
Rate Matters And Regulation [Text Block]
Describes all of the specific events that have or may impact rates and amortization of regulatory assets and liabilities (for example, pending or recently concluded regulatory proceedings). Specifics may include quantifications related to rates, costs, and earnings. Events may relate to rate moratoriums or price tags.
Changes In Advances With Parent
The net change during the reporting period in advances, within one year or the normal operating cycle, from a party that is affiliated with the reporting entity by means of direct or indirect ownership. This does not include advances from clients.
Changes In advances with parent
Entity Current Reporting Status
Entity Current Reporting Status
Damages sought
Loss Contingency, Damages Sought, Value
Other Comprehensive Income (Loss), before Reclassifications, before Tax
Other comprehensive income (loss) before reclassifications
Prior Service Cost [Member]
Prior Service Cost [Member]
Prior Service Cost [Member]
Intercompany Borrowing Agreement - Maximum Borrowing Capacity
Intercompany Borrowing Agreement - Maximum Borrowing Capacity
Intercompany Borrowing Agreement - Maximum Borrowing Capacity
Series Due April 15, 2028 [Member]
Series Due April 15, 2028 [Member]
Series Due April 15, 2028 [Member]
Municipal Bonds [Member]
OPERATING EXPENSES
Operating Expenses [Abstract]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 2 [Member]
Other Comprehensive Income Regulatory classification of certain pension costs Tax
Other comprehensive income regulatory classification of certain pension costs Tax
Regulatory classification of certain pension costs, net of tax of $0.0, $1.2 and $0.0, respectively
McClain Plant [Member]
McClain Plant [Member]
McClain Plant [Member]
Series Due March 15, 2030
Series Due March 15, 2030 [Member]
Series Due March 15, 2030
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Common Stock, Shares Authorized
Common Stock, Shares Authorized
Payable to broker for securities purchased [Member]
Payable to broker for securities purchased [Member]
Payable to Broker for Securities Purchased [Member]
Asset Retirement Obligation [Policy Text Block]
Asset Retirement Obligation [Policy Text Block]
Asset Retirement Obligations
Capital Contribution From Parent Company
Capital contribution from parent company.
Capital contribution from OGE Energy
Accounting Pronouncement [Abstract]
Accounting Pronouncement [Abstract]
Accounting Pronouncement [Abstract]
Document Fiscal Period Focus
Document Fiscal Period Focus
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years
Expected Future Benefit Payments, Five Fiscal Years Thereafter
Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets
Capitalized Computer Software, Amortization
Capitalized Computer Software, Amortization
Debt Instrument, Interest Rate, Stated Percentage
Debt Instrument, Interest Rate, Stated Percentage
Amortization of basis difference and dilution recognition
Equity in Earnings Amortization of Basis Difference
Equity in Earnings Amortization of Basis Difference
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Abstract]
Entity Shell Company
Entity Shell Company
Legal Entity of Counterparty, Type [Axis]
Legal Entity of Counterparty, Type [Axis]
Dividends declared on common stock
Dividends, Common Stock, Cash
Percentage of increase in annual medical inflation cost.
Percentage of Increase in Annual Medical Inflation Cost
Percentage of increase in annual medical inflation cost
SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis]
SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis]
Retained Earnings, Unrestricted
Retained Earnings, Unrestricted
The amount of retained earnings which are available to be paid out in dividends.
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR
CASH AND CASH EQUIVALENTS AT END OF YEAR
Cash and Cash Equivalent
Cash and Cash Equivalents, at Carrying Value, Total
Cash and cash equivalents
Benefit Obligation, Beginning
Benefit Obligation, Ending
Defined Benefit Plan, Benefit Obligation
Common Equity Dividend Restrictions [Abstract]
Common Equity Dividend Restrictions [Abstract]
Common Equity Dividend Restrictions [Abstract]
Defined Benefit Plan, Expected Future Benefit Payment, Year Two
Expected Future Benefit Payments, Year Two
Cybersecurity Risk Management, Strategy, and Governance [Abstract]
Common Stock, Shares, Issued
Postretirement Benefit Plan [Member]
Postretirement Benefit Plan [Member]
Postretirement Benefit Plan [Member]
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]
Cybersecurity Risk Board of Directors Oversight [Text Block]
Capacity Power Purchase Agreements [Member]
Capacity power purchase agreements.
Asset Class [Domain]
Asset Class [Domain]
Asset Retirement Obligations [Table]
Statement [Table]
Statement [Table]
Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During Period, Net of Tax
Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During Period, Net of Tax
Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During Period, Net of Tax, Total
Net gain (loss) arising during the period, net of tax of $0.4, $0.2 and $(0.2), respectively
Awards Other than Options, Fully Vested
Awards Other than Options, Fully Vested
Awards Other than Options, Fully Vested
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Additions
Other Comprehensive Income (Loss), Defined Benefit Plan, Adjustment for Settlement or Curtailment Gain (Loss), Tax
Settlement cost, net of tax of $0.0, $0.0 and $0.4, respectively
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Right-of-use assets obtained in exchange for new operating lease liabilities
Equity instruments other than options vested aggregrate intrinsic value.
Equity Instruments Other than Options Vested Aggregrate Intrinsic Value
Equity Instruments Other than Options, Vested, Aggregrate Intrinsic Value
Regulatory Liability [Axis]
Regulatory Liability [Axis]
Nonpayment of Uninsured Judgments
Nonpayment of Uninsured Judgments
Nonpayment of Uninsured Judgments
Enogex LLC [Member]
Enogex LLC [Member]
Enogex LLC [Member]
OG&E expected wind purchase commitments [Member]
OG&E expected wind purchase commitments [Member]
OG&E expected wind purchase commitments [Member]
Balance at January 1
Balance at December 31
Asset Retirement Obligation
Asset Retirement Obligation, Total
Statement [Line Items]
Statement [Line Items]
OG&E expected cogeneration energy payments [Member]
OG&E expected cogeneration energy payments [Member]
OG&E expected cogeneration energy payments [Member]
Treasury Stock, Value, Acquired, Cost Method
Purchase of treasury stock
Purchase of treasury stock, Value
Entity Filer Category
Entity Filer Category
Reclassification, Comparability Adjustment [Policy Text Block]
Reclassifications
Settlement cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement
Regulatory assets
Deferred Tax Liabilities, Regulatory Assets
Amounts Reclassified from Accumulated OCI, Net of Tax and Noncontrolling Interest
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent
Summarized Balance Sheet Financial Information, Equity Method Investment [Table Text Block]
Summarized Balance Sheet Financial Information, Equity Method Investment [Table Text Block]
Summarized Balance Sheet Financial Information for Equity Method Investment
Liabilities and Equity
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Less: long-term debt due within one year
Long-term debt due within one year
Long-Term Debt, Current Maturities
Long-Term Debt, Current Maturities, Total
Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]
Share-Based Payment Arrangement, Nonvested Award, Cost [Table Text Block]
Summary of Unrecognized Compensation Cost and Weighted-average Periods Over which Compensation Cost is Expected to be Recognized
Long-term Debt, Maturities, Repayments of Principal in Year Three
Long-Term Debt, Maturity, Year Three
Southeast Supply Header, LLC [Member]
Southeast Supply Header, LLC [Member]
Southeast Supply Header, LLC [Member]
Current energy generation capacity
Energy Generation Capacity
Energy generation capacity.
Energy generation capacity
Property, Plant and Equipment by Type [Axis]
Long-Lived Tangible Asset [Axis]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Weighted-Average Interest Crediting Rate
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Weighted-Average Interest Crediting Rate
2026 [Member]
Tranche One [Member]
Tranche One
Fair Value, by Balance Sheet Grouping
Fair Value, by Balance Sheet Grouping [Table Text Block]
Amounts reclassified from accumulated other comprehensive income (loss)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax
Amounts reclassified from accumulated other comprehensive income (loss)
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]
COVID-19 Deferred Expenses
COVID-19 Deferred Expenses [Member]
COVID-19 Deferred Expenses
Summary of Significant Accounting Policies [Table]
Summary of Significant Accounting Policies [Table]
Schedule of Regulatory Assets and Liabilities [Line Items]
Schedule of Regulatory Assets and Liabilities [Line Items]
Schedule of Regulatory Assets and Liabilities [Line Items]
Amount paid by unconsolidated affiliates
Amount Attributable to Unconsolidated Affiliates
Amount Attributable to Unconsolidated Affiliates
Less: Amount paid by unconsolidated affiliates
Investment Tax Credit Over Recoveries [Member]
Investment tax credit over recoveries.
Deferred Tax Assets, Valuation Allowance
Deferred Tax Assets, Valuation Allowance
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]
Statutory federal tax rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Projected Benefit Obligation Funded Status Thresholds Equity
Projected Benefit Obligation Funded Status Thresholds Equity
Projected Benefit Obligation Funded Status Thresholds Equity
Cybersecurity Risk Management Third Party Engaged [Flag]
Documents Incorporated by Reference [Text Block]
Documents Incorporated by Reference
Effective income tax rate
Effective Income Tax Rate Reconciliation, Percent
Effective income tax rate
Claims paid
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Claims Paid
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Claims Paid
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Claims Paid
Claims paid
Integrated Resource Plans [Member]
Integrated resource plans.
Accretion expense
Asset Retirement Obligation, Accretion Expense
Geographical [Domain]
Status [Domain]
Status [Domain]
Status
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
New Long-Term Service Agreement [Axis]
New Long-Term Service Agreement [Axis]
New Long-Term Service Agreement [Axis]
Reserve related to state tax position
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure
Restoration of Retirement Income Plan [Member]
Other Pension Plan [Member]
Other Pension Plan [Member]
Redeemable during the next 12 months
Debentures Subject to Mandatory Redemption [Member]
Debentures Subject to Mandatory Redemption [Member]
Allowance for Doubtful Accounts Receivable
Accounts Receivable, Allowance for Credit Loss
Accounts Receivable, Allowance for Credit Loss, Beginning Balance
Accounts Receivable, Allowance for Credit Loss, Ending Balance
Accounts Receivable, Allowance for Credit Loss
Natural Gas Transportation [Member]
Natural Gas Transportation [Member]
Natural Gas Transportation [Member]
Premium on common stock
Additional Paid in Capital, Common Stock
Components of Benefit Obligation Regulatory Asset
Components of Benefit Obligation Regulatory Asset
Components of Benefit Obligation Regulatory Asset
Public Utilities, Allowance for Funds Used During Construction, Additions
Allowance for borrowed funds used during construction
Pension tracker [Member]
Pension tracker [Member]
Pension tracker [Member]
Federal Energy Regulatory Commission [Member]
Federal Energy Regulatory Commission [Member]
Federal Energy Regulatory Commission [Member]
Defined Benefit Plan, Plan Assets, Benefits Paid
Defined Benefit Plan, Plan Assets, Benefits Paid
Benefits paid
Postretirement Plan, Expected Future Benefit Payments, Year Three
Postretirement Plan, Expected Future Benefit Payments in Year Three
Postretirement Plan, Expected Future Benefit Payments in Year Three
Regulatory Assets, Current
Regulatory Asset, Current
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Mortgage-backed securities
Vesting [Domain]
Disaggregation of Revenue [Table]
Cybersecurity Risk Management, Strategy, and Governance [Table]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of Earnings Per Share Basic and Diluted
Receivable from broker for securities sold [Member]
Receivable from broker for securities sold [Member]
Receivable From Broker For Securities Sold [Member]
Valuation Allowances and Reserves, Charged to Cost and Expense
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense
Natural Gas, Storage [Member]
Natural Gas, Storage [Member]
Property, Plant and Equipment, Net [Abstract]
PROPERTY, PLANT AND EQUIPMENT
Domestic All-Cap/Large Cap Equity [Member]
Domestic All-Cap/Large Cap Equity [Member]
Domestic All-Cap/Large Cap Equity [Member]
Other Regulatory Assets [Member]
Other Regulatory Assets [Member]
Other Regulatory Assets [Member]
Investment, Name [Axis]
Investment, Name [Axis]
BASIC EARNINGS PER AVERAGE COMMON SHARE
Basic earnings per average common share
Earnings Per Share, Basic
Earnings Per Share, Basic, Total
Disaggregation of Revenue [Table Text Block]
Disaggregation of Revenue
Defined Benefit Plan Regulatory Classification Of Certain Pension Costs
Defined benefit plan regulatory classification of certain pension costs.
Regulatory classification of certain pension costs
Payment of long-term debt
Repayments of Long-Term Debt
Repayments of Long-Term Debt, Total
Long term debt repaid
OG&E Estimated Wind Purchase Commitments [Member]
OG&E Estimated Wind Purchase Commitments [Member]
OG&E sstimated wind purchase commitments.
Equity Funds [Member]
Commingled fund [Member]
Equity Funds [Member]
Amount Attributable to Parent
Amount Attributable to Parent
Amount Attributable to Parent
Plus: Amount allocated from OGE Energy
Retirement Benefits [Text Block]
Retirement Plans and Postretirement Benefit Plans
Assumptions Used Calculating Benefit Obligation, Discount Rate
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax
Receivable (foreign currency) [Member]
Receivable (foreign currency) [Member]
Forward Contracts Receivable [Member]
Regulatory classification of certain pension costs
Other Comprehensive Income Regulatory Classification Of Certain Pension Cost Net Of Tax
Other comprehensive income regulatory classification of certain pension cost net of tax.
Regulatory classification of certain pension costs, net of tax of $0.0, $1.2 and $0.0, respectively
Retirement Plan Type [Domain]
Retirement Plan Type [Domain]
Liabilities, Current
Liabilities, Current
Current liabilities
Total current liabilities
Regulatory assets
Regulatory Assets, Noncurrent
Regulatory Asset, Noncurrent
Proceeds from Sale of Equity Securities, FV-NI
Other
Investments in and Advances to Affiliates, at Fair Value, Period Increase (Decrease)
Investments in and Advances to Affiliates, at Fair Value, Period Increase (Decrease), Total
Accounts receivable and accrued unbilled revenues, net
Increase (Decrease) in Accounts Receivable
Adjustments to reconcile net income to net cash provided from (used in) operating activities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net income to net cash provided from operating activities:
Lessee, Operating Lease, Liability, to be Paid, Year Five
2030
Alternate base rate.
Alternate Base Rate [Member]
Arkansas fuel clause over recoveries [Member]
Arkansas Fuel Clause Over Recoveries [Member]
Arkansas fuel clause over recoveries.
Series Due July 15, 2017 [Member]
Series Due July 15, 2017 [Member]
Series Due July 15, 2017 [Member]
Equity Other Than Options, Employee Migration
Equity Other Than Options, Employee Migration
Equity Other Than Options, Employee Migration
Natural Gas Midstream Operations [Member]
Natural Gas Midstream Operations [Member]
Midstream Operations [Member]
Income Tax Paid, Federal, after Refund Received
Income Tax Paid, Federal, after Refund Received, Total
Federal income taxes (net of income tax refunds)
Public Utility Regulatory Policy Act of 1978 [Member]
Public Utility Regulatory Policy Act of 1978 [Member]
Public Utility Regulatory Policy Act of 1978 [Member]
Garfield Industrial Authority Bond [Member]
Garfield Industrial Authority, January 1, 2025 [Member]
Garfield Industrial Authority Bond [Member]
Garfield Industrial Authority Bond [Member]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Postretirement Plan, Expected Future Benefit Payments, Next Twelve Months
Postretirement Plan, Expected Future Benefit Payments in Year One
Postretirement Plan, Expected Future Benefit Payments in Year One
Retained Earnings, Restricted
Retained Earnings, Restricted
The amount of retained earnings which are restricted from being paid out in dividends. Paying out this amount would cause the Company to exceed it's debt to total capitalization ratio established by the Company's debt covenants.
Consolidation Items [Domain]
Entity Small Business
Entity Small Business
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Deferred Tax Asset [Member]
Deferred Tax Asset [Member]
Deferred Tax Asset
Regulated Operations [Abstract]
Regulated Operations [Abstract]
Cash Paid on Operating Leases
Cash Paid on Operating Leases
Cash Paid on Operating Leases
Operating cash flows for operating leases
Commodity Contract [Member]
Commodity Contract [Member]
Retained earnings
Retained Earnings (Accumulated Deficit)
Retained Earnings (Accumulated Deficit), Total
Retained earnings
Defined Benefit Plan, Funded (Unfunded) Status of Plan, Total
Defined Benefit Plan, Funded (Unfunded) Status of Plan
Funded status at end of year
Redbud Plant [Member]
Redbud Plant [Member]
Redbud Plant [Member]
Income taxes.
Income Taxes [Line Items]
Preferred Stock [Member]
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Proceeds from Issuance Initial Public Offering
Proceeds from Issuance Initial Public Offering
Price per share
Sale of Stock, Price Per Share
Deferred Storm and Property Reserve Deficiency, Current
Deferred Storm and Property Reserve Deficiency, Current
OG&E minimum fuel purchase commitments [Member]
OG&E minimum fuel purchase commitments [Member]
OG&E minimum fuel purchase commitments [Member]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Share-Based Payment Arrangement [Text Block]
Stock-Based Compensation
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Leases [Abstract]
Natural gas sales.
Natural Gas Sales [Member]
Natural Gas Sales [Member]
Damages sought, description
Loss Contingency, Damages Sought
Catastrophic Event [Axis]
Amendment Flag
Amendment Flag
Taxes, Miscellaneous
Taxes, Miscellaneous, Total
Taxes other than income
Series Due April 1, 2030
Series Due April 1, 2030 [Member]
Series Due April 1, 2030 [Member]
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Treasury Stock, Shares, Retired
Number of treasury stock used
Additional Factored-Fired Hours
Additional Factored-Fired Hours
Additional Factored-Fired Hours
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Statutory federal tax rate, amount
Investment in unconsolidated affiliates and related party transactions.
Investment in Unconsolidated Affiliates and Related Party Transactions [Policy Text Block]
Investment in Unconsolidated Affiliates and Related Party Transactions
Inventory Disclosure [Text Block]
Inventory Disclosure [Text Block]
OCC Ruling [Axis]
OCC Ruling [Axis]
OCC Ruling
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest, Total
Earnings Per Share, Policy [Policy Text Block]
Earnings Per Share, Policy [Policy Text Block]
Series Due May 15, 2029 [Member]
Series Due May 15 2029 [Member]
Series Due May 15 2029.
Liabilities and Equity [Abstract]
LIABILITIES AND STOCKHOLDER'S EQUITY
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Allowance for Uncollectible Accounts Receivable, Policy
Accounts Receivable [Policy Text Block]
Allowance for Uncollectible Accounts Receivable
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided from operating activities
Income Tax Reconciliation Amortization of Net Unfunded Deferred Taxes
Income tax reconciliation amortization of net unfunded deferred taxes.
Amortization of net unfunded deferred taxes, amount
Other Comprehensive Income Loss Prior Service Credit Arising During The Period Recognized In Net Periodic Benefit Cost Tax Effect
Other Comprehensive Income Loss Prior Service Credit Arising During The Period Recognized In Net Periodic Benefit Cost Tax Effect
Curtailment cost, net of tax of $0.0, $0.0 and ($0.1), respectively
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Common Stock [Member]
Common Stock
Common Stock [Member]
Accumulated Benefit Obligation
Accumulated Benefit Obligation
Defined Benefit Plan, Accumulated Benefit Obligation
Accounting Standards Update and Change in Accounting Principle [Table]
Public Authority [Member]
Public Authority [Member]
Public Authority and Street Light
Cybersecurity Risk Role of Management [Text Block]
Tax Credit Carryforward, Amount
Tax Credit Carryforward, Amount
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months
Long-Term Debt, Maturity, Year One
Lessee, Operating Lease, Liability, to be Paid, Year Three
2028
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets
Accumulated Depreciation
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Less: accumulated depreciation
Approximate construction cost of turbines excluding financing costs and property taxes
Approximate Construction Cost of Turbines Excluding Financing Costs And Property Taxes
Approximate construction cost of turbines excluding financing costs and property taxes.
Series Due January 15, 2036 [Member]
Series Due January 15, 2036 [Member]
Series Due January 15, 2036 [Member]
Series Due January 15, 2033 [Member]
Series Due January 15, 2033 [Member]
Series Due January 15, 2033.
Oklahoma jurisdiction.
Oklahoma jurisdiction [Member]
Oklahoma Jurisdiction
Government Assistance, Income, Increase (Decrease)
Government assistance amount
Series due August 152047 Member
Series due August 152047 Member
Series due August 15, 2047 [Member]
Entity Address, Address Line One
Entity Address, Address Line One
Deferred income taxes and other tax credits, net
Deferred Income Taxes and Tax Credits
Deferred Income Taxes and Tax Credits, Total
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Income Taxes, Policy [Policy Text Block]
Income Tax, Policy [Policy Text Block]
Income Taxes
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]
Schedule of Capitalization, Long-term Debt [Line Items]
Schedule of Capitalization, Long-Term Debt [Line Items]
Amortization of intangible assets period.
Amortization of Intangible Assets Period
Amortization of intangible assets, period
Defined Benefit Plan, Expected Future Benefit Payment, Year Four
Expected Future Benefit Payments, Year Four
Proceeds from Sales of Assets, Investing Activities
Proceeds from Sales of Assets, Investing Activities
OG&E [Member]
Og and E [Member]
Og and E [Member]
Og and E [Member]
SAP S/4 HANA Deferred Expenses [Member]
SAP S4 HANA Deferred Expenses [Member]
SAP S4 HANA deferred expenses.
Operating Lease, Right-of-Use Asset
Operating Lease, Right-of-Use Asset
Right-of-use assets at period end
Defined Benefit Plan, Plan Assets, Category [Domain]
Defined Benefit Plan, Plan Assets, Category [Domain]
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]
Percent of Intangible Plant Balance Amortizable Thereafter
Percent of Intangible Plant Balance Amortizable Thereafter
Percent of Intangible Plant Balance Amortizable Thereafter
Enogex [Member]
Enogex [Member]
Enogex [Member]
Document Type
Document Type
Retirement Plans And Postretirement Benefit Plans Abstract
Retirement Plans and Postretirement Benefit Plans [Abstract]
Retirement Plans and Postretirement Benefit Plans [Abstract]
Collaborative Arrangement and Arrangement Other than Collaborative [Axis]
Arkansas Two Thousand Twenty Five Generation Construction Notice Filing [Member]
Arkansas two thousand twenty five generation construction notice filing.
Arkansas 2025 Generation Construction Notice Filing
Asset Retirement Obligation [Abstract]
Asset Retirement Obligation [Abstract]
Collaborative Arrangement and Arrangement Other than Collaborative [Domain]
Entity Central Index Key
Entity Central Index Key
Line of Credit Facility [Table]
Line of Credit Facility [Table]
Proportionate Unconsolidated Affiliate Net Income
Proportionate Unconsolidated Affiliate Net Income
Proportionate Share of Equity Method Investee Net Income, Before Adjustments
Other Comprehensive Income Reclassification Of Defined Benefit Postretirement Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax
Other Comprehensive Income Reclassification Of Defined Benefit Postretirement Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax
Amortization of deferred net gain, net of tax of $(0.1), ($0.1) and $(0.1), respectively
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]
Other Assets, Noncurrent [Abstract]
DEFERRED CHARGES AND OTHER ASSETS
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
NET CHANGE IN CASH AND CASH EQUIVALENTS
Subsequent Event Type [Domain]
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax
Settlement cost
Settlement cost, net of tax of $0.0, $0.0 and $0.4, respectively
115% [Member]
115% [Member]
115% [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Anti-dilutive shares excluded from earnings per share calculation
Maximum payout range
Maximum payout range
Maximum payout range
Percentage of Subsidiary Contributed
percentage of subsidiary contributed
percentage of subsidiary contributed
Short-Term Debt [Text Block]
Credit Facilities and Short-Term Debt
Common Stock, Par or Stated Value Per Share
Common Stock, Par or Stated Value Per Share
Transmission [Member]
Transmission [Member]
Transmission
Fuel clause over recoveries
Customer Refund Liability, Current
Other comprehensive income, net of tax
Net current period other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]
Due August 31, 2062 [Member]
Due August 31, 2062 [Member]
Due August 31, 2062
Arkansas Public Service Commission [Member]
Arkansas Public Service Commission [Member]
Arkansas Public Service Commission [Member]
OCC Ruling [Domain]
OCC Ruling [Domain]
OCC Ruling
Public Utilities, Policy [Policy Text Block]
Public Utilities, Policy [Policy Text Block]
Accounting Records
Equity Instruments Other than Options, Converted, Aggregrate Intrinsic Value
Equity Instruments Other than Options, Converted, Aggregrate Intrinsic Value
Equity Instruments Other than Options, Converted, Aggregrate Intrinsic Value
Retirement Plan Sponsor Location [Domain]
OG&E wind farm land lease agreements.
O G and E Wind Farm Land Lease Agreements [Member]
OG&E Wind Farm Land Lease Agreements [Member]
Arkansas Two Thousand Twenty Six Generation Construction Notice Filing [Member]
Arkansas two thousand twenty six generation construction notice filing.
Arkansas 2026 Generation Construction Notice Filing
Document Financial Statement Error Correction [Flag]
CenterPoint [Member]
CenterPoint [Member]
CenterPoint [Member]
Total Plan assets [Member]
Total Plan assets [Member]
Total Plan assets [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
Underwriters exercised an option to purchase additional shares
Mustang Modernization [Member]
Mustang Modernization [Member]
Mustang Modernization [Member]
Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Table Text Block]
[Table Text Block] for Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Table]
Reconciliation of Equity in Earnings (Losses) of Unconsolidated Affiliates
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]
Cost of removal and other
Cost Of Removal And Other
Cost of removal and other.
Revenues from Contract with Customers [Abstract]
Revenues from Contract with Customers [Abstract]
Revenues from Contract with Customers [Abstract]
Fuel recoveries
Increase (Decrease) in Deferred Fuel Costs
Increase (Decrease) in Deferred Fuel Costs, Total
Investment
Investment [Text Block]
Unamortized loss on reacquired debt [Member]
Loss on Reacquired Debt [Member]
Senior Notes Due April One Two Thousand Fifty Five [Member]
Senior notes due april one two thousand fifty five.
Senior Notes due April 1, 2055 [Member]
Postemployment Benefit Plans, Policy [Policy Text Block]
Postemployment Benefit Plans, Policy [Policy Text Block]
Supplemental Cash Flow Elements [Abstract]
SUPPLEMENTAL CASH FLOW INFORMATION
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Commercial [Member]
Commercial [Member]
Commercial
Defined Benefit Plans Income Loss [Member]
Defined Benefit Plans Income Loss [Member]
Defined Benefit Plans Income Loss [Member]
Ownership [Domain]
Current Fiscal Year End Date
Current Fiscal Year End Date
Actual return on plans' assets
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-Term Debt Instruments [Table]
Stock-Based Compensation [Abstract]
Stock-Based Compensation [Abstract]
Stock-Based Compensation [Abstract]
Regulatory Liability [Domain]
Regulatory Liability [Domain]
Schedule of Jointly Owned Utility Plants [Table Text Block]
Schedule of Jointly Owned Utility Plants
Common Equity
Common Equity [Text Block]
Disclosures related to earnings per share and current quarter activities in the automatic dividend reinvestment and stock purchase plan.
Oklahoma investment tax credits [Member]
Oklahoma investment tax credits [Member] [Member]
Oklahoma investment tax credits [Member] [Member]
Other Cost and Expense, Operating
Other operation and maintenance
credit facility [Member]
credit facility
Credit Facility [Member]
Components of Benefit Obligation Regulatory Asset [Domain]
Components of Benefit Obligation Regulatory Asset [Domain]
Components of Benefit Obligation Regulatory Asset [Domain]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Entity Address, State or Province
Entity Address, State or Province
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity
Equity Instruments Other than Options, Nonvested, Number, Beginning Balance
Equity Instruments Other than Options, Nonvested, Number, Ending Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Electric Generation Equipment [Member]
Electric Generation Equipment [Member]
OG&E Capacity Commitments [Member]
OG&E Capacity Commitments [Member]
OG&E capacity commitments.
Term loan available amount
Line of Credit Facility, Remaining Borrowing Capacity
Increase (decrease) in short-term debt
Proceeds from (Repayments of) Short-Term Debt
Proceeds from (Repayments of) Short-Term Debt, Total
(Decrease) increase in short-term debt
Administrative expenses and charges
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Administrative Expenses and Charges
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Administrative Expenses and Charges
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Administrative Expenses and Charges
Investment fees
Investment fees
Equity method investment nonconsolidated investees.
Equity Method Investment Nonconsolidated Investees [Member]
Equity Method Investment Nonconsolidated Investees [Member]
Investment, Name [Domain]
Investment, Name [Domain]
Investment Owned, Balance, Shares
Investment Owned, Balance, Shares
Preferred Stock, Shares Outstanding
Preferred Stock, Shares Outstanding
Preferred Stock, Shares Outstanding, Beginning Balance
Preferred Stock, Shares Outstanding, Ending Balance
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Schedule of Computer Software Costs, Amortization [Table Text Block]
Schedule of Computer Software Costs, Amortization [Table Text Block]
Schedule of Computer Software Costs, Amortization [Table Text Block]
Shares Held in Reserve Related to Dividend Reinvestment Plan and Stock Purchase Plan
Common Stock, Capital Shares Reserved for Future Issuance
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements
Incremental shares
Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block]
Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block]
Defined Benefit Plan, Assumptions [Table Text Block]
Schedule of Assumptions Used
Inventory [Axis]
Inventory [Axis]
Geographical [Axis]
Proceeds from Divestiture of Businesses and Interests in Affiliates
Proceeds from Divestiture of Businesses and Interests in Affiliates, Total
Cash received in Enable/Energy Transfer transaction (Note 1)
Document Information, Document [Axis]
Document Information, Document [Axis]
Schedule of Unamortized Computer Software Costs [Table Text Block]
Schedule of Unamortized Computer Software Costs [Table Text Block]
[Table Text Block] for Schedule of Unamortized Computer Software Costs [Table]
Non-Retail Revenues [Axis]
Non-Retail Revenues [Axis]
Non-Retail Revenues [Axis]
Performance Units Earnings Per Share Valuation Assumptions [Table Text Block]
Performance Units Earnings Per Share Valuation Assumptions [Table Text Block]
Performance Units Earnings Per Share Valuation Assumptions [Table Text Block]
State income taxes (net of income tax refunds)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
State income taxes, net of federal income tax benefit, amount
Interest costs capitalized
Interest Costs Capitalized
Prior service cost arising during the period, net of tax of $0.0, $0.0 and ($0.3), respectively
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Tax
Option excercised price
Stock Issued During Period, Value, Stock Options Exercised
Series Due March 15, 2044 [Member]
Series due March 15, 2044 [Member]
Series due March 15, 2044 [Member]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities
120% [Member]
120% [Member]
120% [Member]
Uncollectible accounts
Deferred Tax Asset, Tax Deferred Expense, Reserve and Accrual, Accounts Receivable, Allowance for Credit Loss
Other comprehensive income (loss), net of tax:
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Performance Shares [Member]
Performance Units [Member]
Schedule of Capitalized Pension and Postretirement Cost [Table Text Block]
Schedule of Capitalized Pension and Postretirement Cost [Table Text Block]
Schedule of Capitalized Pension and Postretirement Cost
Estimated Refund to SPP [Axis]
Estimated Refund to SPP [Axis]
Estimated Refund to SPP [Axis]
Other Postretirement Benefits Plan [Member]
Other Postretirement Benefits Plan [Member]
Postretirement Benefit Plans [Member]
Long-Term Debt, Fair Value
Long-Term Debt, Fair Value
Subsequent Event [Member]
Subsequent Event [Member]
Equity Method Investment, Nonconsolidated Investee [Domain]
Equity Method Investment, Nonconsolidated Investee [Domain]
Series Due April 1, 2053 [Member]
Series Due April 1, 2053 [Member]
Series Due April 1, 2053.
Amounts reclassified from accumulated other comprehensive income (loss)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
OGE Energy Term Loan.
OGE Energy Term Loan [Member]
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Abstract]
Other Assets, Noncurrent
Total deferred charges and other assets
Proposed Rate-Based Carbon Reduction
Proposed Rate-Based Carbon Reduction
Proposed Rate-Based Carbon Reduction
Projected Benefit Obligation Funded Status Thresholds Fixed Income
Projected Benefit Obligation Funded Status Thresholds Fixed Income
Projected Benefit Obligation Funded Status Thresholds Fixed Income
Unamortized discount
Debt Instrument, Unamortized Discount
Debt Instrument, Unamortized Discount, Total
Share-Based Payment Arrangement, Cost by Plan [Table Text Block]
Schedule of Pre-tax Compensation Expense and Related Income Tax Benefit
Regulatory Asset, Amortization Period
Amortization period of regulatory asset
Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Customer [Domain]
Customer [Domain]
OG&E cogeneration capacity and fixed operation and maintenance payments [Member]
OG&E cogeneration capacity and fixed operation and maintenance payments [Member]
OG&E cogeneration capacity and fixed operation and maintenance payments [Member]
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions
Reductions
Reductions
Public Utilities, Inventory, Fuel [Member]
Public Utilities, Inventory, Fuel [Member]
Treasury Stock, Common, Shares
Treasury Stock, Common, Shares
Treasury Stock, Common, Shares
Treasury Stock, Common, Shares
Legislative Matters
Regulatory Depreciation and Amortization, Policy [Policy Text Block]
Goodwill, Impairment Loss
Goodwill, Impairment Loss
Goodwill, Impairment Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Lessee, Operating Lease, Contingent Liability
Lessee, Operating Lease, Contingent Liability
Lessee, Operating Lease, Contingent Liability
Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]
Unrecorded Unconditional Purchase Obligations Disclosure
Other Comprehensive Income Reclassification Of Defined Benefit Postretirement Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax
Other Comprehensive Income Reclassification Of Defined Benefit Postretirement Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax
Amortization of deferred net gain, net of tax of $(0.1), $(0.1) and $(0.1), respectively
Other Comprehensive Income (Loss) Amortization Defined Benefit Postretirement Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Tax Effect
Tax effect on adjustment out of other comprehensive income for prior service costs recognized as a component of net periodic postretirement benefit cost during the period.
Amortization of prior service credit, net of tax of $0.0, $0.0 and ($0.1), respectively
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party
Selling, General and Administrative Expense
Selling, General and Administrative Expense, Total
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Debt Instrument, Maturity Date
Debt Instrument, Maturity Date
Debt instrument, maturity date
Minimum [Member]
Minimum [Member]
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Assets, Current [Abstract]
CURRENT ASSETS
Other
Other Long-Term Investments
Fair Value, Inputs, Level 3 [Member]
Fair Value, Inputs, Level 3 [Member]
OG and E Tinker Debt [Member]
OG and E Tinker Debt [Member]
OG&E Tinker Debt [Member]
Segment Reporting [Abstract]
Segment Reporting [Abstract]
Accelerated depreciation and other property related differences
Deferred Tax Liabilities, Property, Plant and Equipment
Total capitalization (including long-term debt due within one year)
Capitalization, Long-Term Debt and Equity
Accrued Environmental Loss Contingencies, Noncurrent
Accrued Environmental Loss Contingencies, Noncurrent
Liabilities, Current [Abstract]
CURRENT LIABILITIES
Unrecognized Tax Benefits, Interest on Income Taxes Accrued
Uncertain tax positions, Penalties
Regulatory Asset [Axis]
Regulatory Asset [Axis]
Related Party Transactions [Abstract]
Related Party Transactions [Abstract]
Accrued liabilities
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities
Operating Loss Carryforwards
State operating loss, Carry forward amount
Accounts Receivable, after Allowance for Credit Loss, Current
Accounts Receivable, after Allowance for Credit Loss, Current, Total
Accounts receivable
Interest Expense, Operating and Nonoperating [Abstract]
INTEREST EXPENSE
Regulatory Liability, Current
Regulatory Liability, Current
Components of Benefit Obligation Regulatory Asset [Table Text Block]
Components of Benefit Obligation Regulatory Asset [Table Text Block]
Summary of Components of Benefit Obligation
Commitments and Contingencies
COMMITMENTS AND CONTINGENCIES (NOTE 13)
Lessee, Leases
Lessee, Leases [Policy Text Block]
Leases
SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain]
SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain]
Service cost
Defined Benefit Plan, Service Cost
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance
OG&E Senior Notes [Member]
Og and E Senior Notes [Member]
Og and E Senior Notes [Member]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax
Net (loss) gain arising during the period, net of tax of $(0.5), $0.0 and $0.0, respectively
Edison Mission Energy [Member]
Edison Mission Energy [Member]
Edison Mission Energy [Member]
Estimated Environmental Capital Costs
Estimated Environmental Capital Costs
Estimated Environmental Capital Costs
Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During the Period, Tax
Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During the Period, Tax
Net gain (loss) arising during the period, net of tax of $0.4, $0.2 and $(0.2), respectively
Operating Lease, Liability
Operating Lease, Liability, Total
Present value of net minimum lease payments
Operating lease liabilities at period end
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Auditor Firm ID
Auditor Firm ID
Pension Plans [Member]
Pension Plans [Member]
Pension Plan [Member]
Forecast [Member]
Short-term debt
Short-Term Debt
Short-Term Debt, Total
Factored-Fired Starts
Factored-Fired Starts
Factored-Fired Starts
Capitalized Computer Software, Gross
Capitalized Computer Software, Net
Capitalized Computer Software, Net, Total
Capitalized Computer Software, Net, Beginning Balance
Capitalized Computer Software, Net, Ending Balance
Depreciation and amortization
Depreciation, Amortization and Accretion, Net
Depreciation, Amortization and Accretion, Net, Total
Equity Securities, FV-NI, Cost
Equity securities investment in Energy Transfer
Estimated Refund to SPP
Estimated Refund to SPP
Estimated Refund to SPP
Term loan due may twenty four two thousand twenty five.
Term Loan Due May Twenty Four Two Thousand Twenty Five [Member]
Due May 24, 2025
Plan Assets Attributable to Affiliates
Plan Investments Attributable to Affiliates [Member]
Plan Investments Attributable to Affiliates
Restoration of Retirement Income Plan [Member]
Restoration of Retirement Income Plan [Member]
Restoration of Retirement Income Plan [Member]
Fair Value of Vested Performance Units and Restricted Stock [Table Text Block]
Fair Value of Vested Performance Units and Restricted Stock [Table Text Block]
Fair Value of Vested Performance Units and Restricted Stock [Table Text Block]
Summary of Fair Value for Vested Performance Units and Restricted Stock Units
OG&E Generation Capacity Construction Commitments [Member]
OgE Generation Capacity Construction Commitments [Member]
Oge generation capacity construction commitments.
Power plant long-term service agreement
Power Plant Long-Term Service Agreement
Power Plant Long-Term Service Agreement
Amortization of net unfunded deferred taxes
Effective Income Tax Rate Reconciliation Amortization of Net Unfunded Deferred Taxes
Effective Income Tax Rate Reconciliation Amortization of Net Unfunded Deferred Taxes
Long-Term Debt, Maturity, Year Two
Finite-Lived Intangible Assets, Major Class Name [Member]
Finite-Lived Intangible Assets, Major Class Name [Member]
Finite-Lived Intangible Assets, Major Class Name [Member]
Net income (loss)
Net income
Net income attributable to OGE Energy
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Exercised Stock Options [Table Text Block]
Exercised Stock Options [Table Text Block]
Exercised Stock Options [Table Text Block]
OGE Holdings [Member]
OGE Holdings [Member]
OGE Holdings [Member]
Other
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax
Other comprehensive income, net of tax, Number of Shares
Other Comprehensive Income (Loss), Net of Tax, Number of Shares
Other Comprehensive Income (Loss), Net of Tax, Number of Shares
Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares
Contingently issuable shares (performance and restricted stock units)
Postretirement Plan, Expected Future Benefit Payments in Year Four
Postretirement Plan, Expected Future Benefit Payments in Year Four
Postretirement Plan, Expected Future Benefit Payments in Year Four
Long-term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]
Loss Contingencies [Table]
Loss Contingencies [Table]
BASIC AVERAGE COMMON SHARES OUTSTANDING
Weighted Average Number of Shares Outstanding, Basic
Weighted Average Number of Shares Outstanding, Basic, Total
Basic average common shares outstanding
Purchase Obligation, Due in Next Twelve Months
Unrecorded Unconditional Purchase Obligation, to be Paid, Year One
Utilities Operating Expense, Purchased Power under Long-term Contracts
Utilities Operating Expense, Purchased Power under Long-Term Contracts
Scenario [Axis]
Statement, Scenario [Axis]
Scenario [Axis]
Regulatory Asset
Regulatory Asset, Total
Regulatory asset
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Other current liabilities
Increase (Decrease) in Other Current Liabilities
Capitalized Portion of Net Periodic Benefit Cost
Capitalized Portion of Net Periodic Benefit Cost
Capitalized Portion of Net Periodic Benefit Cost
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount
Nontaxable or nondeductible items, amount
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
NextEra Energy [Member]
NextEra Energy [Member]
NextEra Energy [Member]
Fair Value Measured at Net Asset Value Per Share [Member]
Net Asset Value [Member]
Segments [Axis]
Business Segments [Axis]
Segments [Axis]
Property, Plant and Equipment, Type [Domain]
Long-Lived Tangible Asset [Domain]
Entity by Locations [Axis]
Entity by locations.
Additions
Asset Retirement Obligation, Liabilities Incurred
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]
Final Rate-Based Carbon Reduction
Final Rate-Based Carbon Reduction
Final Rate-Based Carbon Reduction
Employment Costs [Member]
Employment Costs [Member]
Employment Costs [Member]
Regulatory Jurisdiction [Axis]
Regulatory jurisdiction.
Defined Benefit Plan, Cost of Providing Special and Contractual Termination Benefits
Special termination benefits
Total long-term debt
Total long-term debt
Long-Term Debt
Long-term Debt
Related Party Transactions Disclosure
Related Party Transactions Disclosure [Text Block]
U.S. common stocks [Member]
U.S. common stocks [Member]
U.S. common stocks [Member]
Fair Value, Inputs, Level 1, 2 and 3 [Member]
Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]
Stock-based compensation
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total
Variable Rate [Domain]
Actuarial losses (gains)
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Stockholders' Equity Attributable to Parent
Equity, Attributable to Parent
Stockholders' Equity Attributable to Parent, Beginning Balance
Stockholders' Equity Attributable to Parent, Ending Balance
Total stockholder's equity
International Equity [Member]
International Equity [Member]
International Equity [Member]
Unrecorded Unconditional Purchase Obligation, Due within Five Years
Unrecorded Unconditional Purchase Obligation, to be Paid, Year Five
Basis of Accounting, Policy [Policy Text Block]
Basis of Accounting, Policy [Policy Text Block]
Accrued vacation
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other
Statement of Stockholders' Equity [Abstract]
Statement of Stockholders' Equity [Abstract]
ARKANSAS [Member]
ARKANSAS
ARKANSAS
Series due August 15, 2028 [Member]
Series due August 15, 2028 [Member]
Series due August 15, 2028 [Member]
Projected Benefit Obligation Funded Status Thresholds [Table Text Block]
Projected Benefit Obligation Funded Status Thresholds [Table Text Block]
Projected Benefit Obligation Funded Status Thresholds
Use of Estimates, Policy [Policy Text Block]
Use of Estimates, Policy [Policy Text Block]
Use of Estimates
Schedule of Nonvested Share Activity [Table Text Block]
Schedule of Nonvested Share Activity [Table Text Block]
Summary of Activity for Non-vested Performance Units and Restricted Stock Units
Equity Method Investment [Table]
Schedule of Equity Method Investments [Table]
Environmental compliance plan expenditures [Member]
Environmental Compliance Plan [Member]
Environmental Compliance Plan [Member]
Environmental Compliance Plan [Member]
Treasury Stock
Treasury Stock, Common [Member]
Long-Term Debt, Maturity, Year Five
Long-term Debt, Maturities, Repayments of Principal in Year Five
Interest income
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Interest Income
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Interest Income
Defined Benefit Plan Disclosure [Line Items]
Underwriter [Member]
Over-Allotment Option [Member]
Regulatory Assets Percentage Of Deferred Costs
Regulatory assets percentage of deferred costs.
Regulatory asset percent of deferred cost
Entity Address, Address Line Two
Entity Address, Address Line Two
Lease, cost [Table]
Lease, cost [Table]
Lease, cost [Table]
Fair Value Measurements
Fair Value Disclosures [Text Block]
Realized losses
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Realized Gains (Losses)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Realized Gains (Losses)
Realized gains
Public Utilities, Regulatory Proceeding [Domain]
Public Utilities, Regulatory Proceeding [Domain]
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]
Construction Work In Progress Incentive and Abandonment Incentive Cost
Construction work in progress incentive and abandonment incentive cost.
Noncontrolling Interest
Noncontrolling Interest [Member]
Series Due June 1, 2040 [Member]
Series Due June 1, 2040 [Member]
Series Due June 1, 2040 [Member]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Regulatory Asset [Domain]
Regulatory Asset [Domain]
Other
Other Assets, Current
Noncash Investing and Financing Items [Abstract]
NON-CASH INVESTING AND FINANCING ACTIVITIES
Accumulated Deferred Investment Tax Credit
Accumulated Deferred Investment Tax Credit
Deferred investment tax credits
Equity in earnings of unconsolidated affiliates
Equity in earnings of unconsolidated affiliates
Equity in earnings of unconsolidated affiliates
Equity in earnings (losses) of unconsolidated affiliates
Income (Loss) from Equity Method Investments
Long-Term Debt, Maturity, Year Four
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Schedule of Unrecognized Tax Benefits Roll Forward
Series Due February 1, 2038 [Member]
Series Due February 1, 2038 [Member]
Series Due February 1, 2038 [Member]
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Oilfield [Member]
Oilfield [Member]
Oilfield
Plan Name [Domain]
Plan Name [Domain]
Ratio of Consolidated Debt to Consolidated Capitalization
Ratio of Consolidated Debt to Consolidated Capitalization
The percentage of consolidated debt to total consolidated capitalization, which the entity may not exceed pursuant to a debt covenant.
Asset Retirement Obligation Disclosure [Text Block]
Asset Retirement Obligation Disclosure [Text Block]
Timing Differences Related to Equity Method Investee Net Income
Timing Differences Related to Equity Method Investee Net Income
Timing Differences Related to Equity Method Investee Net Income
Differences due to timing of OGE Energy and Enable accounting close
Interest expense
Interest Expense, Operating and Nonoperating
Interest expense
Income taxes recoverable from customers, net [Member]
Income taxes recoverable from customers, net [Member]
Income taxes recoverable from customers, net [Member]
Mutual Funds [Member]
Mutual Fund [Member]
Entity [Domain]
Entity [Domain]
Schedule of Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Axis]
Schedule of Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Axis]
Credit Facility [Axis]
Series Due May 24, 2025 [Member]
Series Due May 24 2025.
Fuel, purchased power and direct transmission expense
Cost of Product and Service Sold
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]
Reclassifications [Text Block]
Reclassifications [Text Block]
Current State and Local Tax Expense (Benefit)
Current State and Local Tax Expense
Schedule of Expected Benefit Payments [Table Text Block]
Schedule of Expected Benefit Payments
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]
Employer expected contribution
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year
Allowance for Funds Used During Construction [Abstract]
Allowance for Funds Used During Construction [Abstract]
Allowance for Funds Used During Construction [Abstract]
Partners' Capital Account, Units, Sold in Public Offering
Partners' Capital Account, Units, Sold in Public Offering
Schedule of Line of Credit Facilities [Table Text Block]
Schedule of Line of Credit Facilities
Treasury Stock, Value
Treasury Stock, Value
Treasury Stock, Value, Total
Related Party [Axis]
Related and Nonrelated Parties [Axis]
Increase (Decrease) in Income Taxes Payable
Increase (Decrease) in Income Taxes Payable
Income taxes payable - parent
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Uncertain tax position, amount
Pension Plans, Defined Benefit [Member]
Pension Plan [Member]
Pension Plan [Member]
Factored-Fired Hours
Factored-Fired Hours
Factored-Fired Hours
Property, Plant and Equipment, Policy [Policy Text Block]
Property, Plant and Equipment, Policy [Policy Text Block]
Property, Plant and Equipment
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax
Net (loss) gain arising during the period, net of tax of $(0.5), $0.0 and $1.0, respectively
Enable Midstream Partners [Member]
Enable Midstream Partners [Member]
Enable Midstream Partners [Member]
Vegetation Management Program Deferred Costs [Member]
Vegetation management program deferred costs.
Entity Address, City or Town
Entity Address, City or Town
Acceleration of Indebtedness of Credit Facility
Acceleration of Indebtedness of Credit Facility
Acceleration of Indebtedness of Credit Facility
Summary of Significant Accounting Policies [Text Block]
Schedule of Regulatory Assets and Liabilities [Text Block]
State operating loss [Member]
State operating loss [Member]
State operating loss [Member]
Series Due July 15, 2027 [Member]
Series Due July 15, 2027 [Member]
Series Due July 15, 2027 [Member]
Number of reporting segments
Number of Reportable Segments
Security Exchange Name
Security Exchange Name
Credit Facility [Domain]
Group Retiree Medical Insurance Contract [Member]
Group Retiree Medical Insurance Contract [Member]
Group Retiree Medical Insurance Contract [Member]
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Redeemable Noncontrolling Interest, Equity, Carrying Amount, Total
Uninsured Judgements [Member]
Uninsured Judgements [Member]
Uninsured Judgements [Member]
Long-term Debt, Gross
Long-Term Debt, Gross
Long term debt
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Uncertain tax position
Property, Plant and Equipment, Gross
Property, Plant and Equipment, Gross
Property, Plant and Equipment, Gross, Beginning Balance
Property, Plant and Equipment, Gross, Ending Balance
Total property, plant and equipment
U.S. Equity Mutual Funds Investment [Member]
U.S. Equity Mutual Funds Investment [Member]
U.S. Equity Mutual Funds Investment [Member]
Mutual fund [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]
New Long-Term Service Agreement [Domain]
New Long-Term Service Agreement [Domain]
[Domain] for New Long-Term Service Agreement [Axis]
Senior Notes Due April One Two Thousand Fifty Three [Member]
Senior notes due April one two thousand fifty three.
Senior Notes due April 1, 2053 [Member]
Eliminations [Member]
Intersegment Eliminations [Member]
INCOME BEFORE TAXES
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Property, Plant and Equipment [Table]
Public Utility, Property, Plant and Equipment [Table]
Term Loan [Member]
Term Loan
Term Loan [Member]
Equity Instruments Other than Options, Converted in Period
Equity Instruments Other than Options, Converted in Period
Equity Instruments Other than Options, Converted in Period
Return of capital - unconsolidated affiliates
Proceeds from Equity Method Investment, Distribution, Return of Capital
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Related party transaction purchases and sales from related party.
Related Party Transaction Purchases and Sales From Related Party
Related Party Transaction, Purchases and Sales from Related Party
Series Due May 15, 2041 [Member]
Senior Notes due May 15, 2041 [Member]
Senior Notes due May 15, 2041 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted
Retirement Plan Sponsor Location [Axis]
Benefit obligations regulatory asset [Member]
Benefit Obligations [Member]
Benefit Obligations [Member]
Arkansas Two Thousand Twenty Four Generation Construction Notice Filing [Member]
Arkansas 2024 Generation Construction Notice Filing.
Arkansas 2024 Generation Construction Notice Filing
Outstanding Intercompany Borrowings
Outstanding Intercompany Borrowings
Outstanding Intercompany Borrowings
Inventory, Net
Inventory, Net, Total
Fuel inventories
Percent of intangible plant balance amortizable two.
Percent of Intangible Plant Balance Amortizable Two
Percent of Intangible Plant Balance Amortizable
Income Taxes [Abstract]
Income Taxes [Abstract]
Income Taxes [Abstract]
Interest (net of interest capitalized)
Interest Paid, Excluding Capitalized Interest, Operating Activity
Range [Domain]
Statistical Measurement [Domain]
Damage from Fire [Member]
Damage from Fire, Explosion or Other Hazard [Member]
FPL Energy [Member]
FPL Energy [Member]
FPL Energy [Member]
Amortization of intangible assets period thereafter.
Amortization of Intangible Assets Period Thereafter
Amortization of Intangible Assets, Period
Assets, Current
Assets, Current
Current assets
Total current assets
Compensation Expense
Share-Based Payment Arrangement, Expense
Total compensation expense
Total compensation expense
OgE Wind Purchase Commitments [Member]
OgE Wind Purchase Commitments.
OG&E Wind Purchase Commitments [Member]
Document Period End Date
Document Period End Date
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments and Joint Ventures [Abstract]
Series due April 1, 2047 [Member]
Series due April 1, 2047 [Member]
Series due April 1, 2047 [Member]
Postretirement Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter
Postretirement Plan, Expected Future Benefit Payments Thereafter
Postretirement Plan, Expected Future Benefit Payments Thereafter
Fair Value Hierarchy and NAV [Domain]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Fair Value Hierarchy and NAV [Domain]
95% [Member]
95% [Member]
95% [Member]
Defined Contribution Plan, Cost
Defined Contribution Plan, Cost
ICFR Auditor Attestation Flag
ICFR Auditor Attestation Flag
Contributions to Pay Down Short-Term Debt
Contributions to Pay Down Short-Term Debt
Contributions to Pay Down Short-Term Debt
Vegetation management operation and maintenance expenses
Vegetation management operation and maintenance expenses.
Automatic Dividend Reinvestment and Stock Purchase Plan [Member]
Automatic Dividend Reinvestment and Stock Purchase Plan [Member]
Automatic Dividend Reinvestment and Stock Purchase Plan [Member]
Defined Benefit Plan, Benefit Obligation, Benefits Paid
Benefits paid
Other
Other Assets, Miscellaneous, Noncurrent
Oklahoma capital investment board credits [Member]
Oklahoma capital investment board credits [Member] [Member]
Oklahoma capital investment board credits [Member] [Member]
Oklahoma Energy Efficiency Rider Under Recovery
Oklahoma Energy Efficiency Rider Under Recovery [Member]
Oklahoma Energy Efficiency Rider Under Recovery
Long-Term Debt
Long-Term Debt [Text Block]
Domestic Small-Cap Equity [Member]
Domestic Small-Cap Equity [Member]
Domestic Small-Cap Equity [Member]
Schedule of Regulatory Assets and Liabilities [Table]
Schedule of Regulatory Assets and Liabilities [Table]
Schedule of Regulatory Assets and Liabilities [Table]
Statement of Financial Position [Abstract]
Statement of Financial Position [Abstract]
Restricted Stock Units (RSUs)
Restricted Stock Units (RSUs) [Member]
Loss Contingency Nature [Axis]
OG&E's Jurisdictional Revenues
OG&E's Jurisdictional Revenues
OG&E's Jurisdictional Revenues
Revenue Recognition, Policy [Policy Text Block]
Revenue [Policy Text Block]
Revenue Recognition
Public Utilities, Regulatory Proceeding [Axis]
Public Utilities, Regulatory Proceeding [Axis]
Loss Contingency, Nature [Domain]
Vesting [Axis]
Contract Amount
Contract Amount
Contracted amount to be paid for goods and/or services.
Reclassification out of Accumulated Other Comprehensive Income [Member]
Settlement Cost [Member]
Residential [Member]
Residential [Member]
Residential
Liabilities, Other than Long-Term Debt, Noncurrent [Abstract]
DEFERRED CREDITS AND OTHER LIABILITIES
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant
Participants' contributions
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax, Total
Current Income Tax Expense (Benefit)
Current Income Tax Expense
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
fees paid from disposition of assets
fees paid from disposition of assets
Fees paid from disposition of assets
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Short-Term Debt, Weighted Average Interest Rate, at Point in Time
Weighted - Average Interest Rate
Schedule of Change in Asset Retirement Obligation [Table Text Block]
Schedule of Change in Asset Retirement Obligation
Liabilities
Total liabilities
Corporate owned life insurance
Deferred Tax Liabilities Corporate Owned Life Insurance
Deferred tax liabilities corporate owned life insurance.
Federal tax credits [Member]
Federal tax credits [Member] [Member]
Federal tax credits [Member] [Member]
Amortization of Intangible Assets, Period
Amortization Of Intangible Assets Period Three
Amortization of intangible assets period three.
Valuation Allowance by Deferred Tax Asset [Axis]
Valuation Allowance by Deferred Tax Asset [Axis]
Customer Impact [Member]
Customer Impact [Member]
Customer Impact [Member]
Jointly Owned Utility Plant [Axis]
Jointly Owned Utility Plant [Axis]
Proceeds from Contributions from Parent
Proceeds from Contributions from Parent
Capital contribution from OGE Energy
Non-Retail Revenues [Domain]
Non-Retail Revenues [Domain]
[Domain] for Non-Retail Revenues [Axis]
Loss Contingency, Range of Possible Loss, Maximum
Loss Contingency, Estimate of Possible Loss
Equity Method Investments [Policy Text Block]
Equity Method Investments [Policy Text Block]
Investment in Equity Securities of Energy Transfer
Expected return on plan assets
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Lessee, Operating Lease, Liability, to be Paid, Year Two
2027
Jointly Owned Utility Plant [Domain]
Jointly Owned Utility Plant [Domain]
Restricted Stock [Member]
Restricted Stock [Member]
Series Due May 1, 2043 [Member]
Series due May 1, 2043 [Member]
Series due May 1, 2043 [Member]
Variable Rate [Axis]
Dividends payable
Dividends Payable, Current
Valuation Allowances and Reserves, Beginning Balance
Valuation Allowances and Reserves, Ending Balance
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount
DILUTED AVERAGE COMMON SHARES OUTSTANDING
Weighted Average Number of Shares Outstanding, Diluted
Diluted average common shares outstanding
Entity File Number
Securities Act File Number
Horseshoe Lake [Member]
Horseshoe Lake [Member]
Horseshoe Lake.
Location [Domain]
Location [Domain]
Tinker Air Force Base [Member]
Tinker Air Force Base.
Dividends paid on common stock
Payments of Ordinary Dividends, Common Stock
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent
Nontaxable or nondeductible items
OGE Energy [Member]
OGE Energy [Member]
OGE Energy [Member]
Domestic Plan [Member]
Schedule of Regulatory Assets and Liabilities [Table Text Block]
A table of assets and liabilities that are created when regulatory agencies permit public utilities to defer certain costs and recognition of certain revenues that are included in rate-setting to the balance sheet.
Schedule of Regulatory Assets and Liabilities
Percent of Principal Amount Subject to Optional Tender
Percent of Principal Amount Subject to Optional Tender
Percent of Principal Amount Subject to Optional Tender
Cover [Abstract]
Unrecorded Unconditional Purchase Obligation, Due within Two Years
Unrecorded Unconditional Purchase Obligation, to be Paid, Year Two
Electrics Company.
Electric Company [Member]
Distributions from unconsolidated affiliates
increase decrease in distributions from unconsolidated affiliates
increase decrease in distributions from unconsolidated affiliates
Cash collateral [Member]
Cash Collateral [Member]
Cash Collateral [Member]
Equity Instruments Other than Options, Forfeited in Period
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Taxes Payable, Current
Taxes Payable, Current, Total
Accrued taxes
Not Extended
Not Extended [Member]
Not Extended
Deferred Tax Asset [Domain]
Deferred Tax Asset [Domain]
Scenario, Unspecified [Domain]
Scenario [Domain]
CPV Keenan [Member]
CPV Keenan [Member]
CPV Keenan [Member]
US Treasury Securities [Member]
U.S. treasury notes and bonds [Member]
Series Due January 15, 2019 [Member]
Series Due January 15, 2019 [Member]
Series Due January 15, 2019 [Member]
Rate Matters and Regulation [Line Items]
Number of Shares Authorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
Number of operating segments
Number of Operating Segments
Additional Pension Expense to Meet State Requirements
Additional Pension Expense to Meet State Requirements
Change in postretirement expense to maintain allowed recoverable amount in Oklahoma jurisdiction (A)
Sale of Stock [Domain]
Report of Business Segments
Segment Reporting Disclosure [Text Block]
Postretirement benefit plans:
Postretirement plans:
Defined Benefit Postretirement Plans [Abstract]
-- None. No documentation exists for this element. --
Tax Jurisdiction of Domicile [Extensible Enumeration]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table]
Allowance for Funds Used During Construction, Policy [Policy Text Block]
Allowance for Funds Used During Construction, Policy [Policy Text Block]
Allowance for Funds Used During Construction
Catastrophe [Member]
Winter Storm Uri
Financial instruments measured at fair value
Derivative Assets (Liabilities), at Fair Value, Net
Derivative Assets (Liabilities), at Fair Value, Net, Total
Operating Leased Assets [Line Items]
Operating Leased Assets [Line Items]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount
Asset Retirement Obligations Accreted Period
Asset Retirement Obligations Accreted Period
Asset Retirement Obligations Accreted, Period
Amount of Acquisition Adjustments
Public Utilities, Property, Plant and Equipment, Amount of Acquisition Adjustments
Nature of Operation, Product Information, Concentration of Risk [Table]
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Schedule of Maturity Analysis of Operating Lease Liabilities
Federal tax credits
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Percent
Contract with Customer, Liability, Current
Customer deposits
Gain (Loss) on Disposition of Assets
Gain (Loss) on Disposition of Assets
Gain (Loss) on Disposition of Assets, Total
Gain on Enable/Energy Transfer transaction, net
Ownership [Axis]
Total Plan investments [Member]
Total Plan investments [Member]
Total Plan Investments [Member]
Comprehensive Income (Loss) Note [Text Block]
Comprehensive Income (Loss) Note [Text Block]
Jointly Owned Utility Plant, Proportionate Ownership Share
Jointly Owned Utility Plant, Proportionate Ownership Share
Curtailment
Curtailment
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment
Liabilities settled
Asset Retirement Obligation, Liabilities Settled
Liabilities settled
Depreciation expense
Depreciation
Depreciation, Total
Pension Plan and Restoration of Retirement Income Plan:
Pension Plan and Restoration of Retirement Income Plan:
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract]
In Favor Cooperatives [Member]
In Favor Cooperatives [Member]
In Favor Cooperatives
Defined Benefit Plan Regulatory Classification Of Certain Pension Costs Fair Value
Defined benefit plan regulatory classification of certain pension costs fair value.
Regulatory classification of certain pension costs
Ultimate Health Care Cost Trend Rate
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate
Proceeds from long-term debt
Proceeds from Issuance of Long-Term Debt
Proceeds from Issuance of Long-Term Debt, Total
Oklahoma Corporation Commission [Member]
Oklahoma Corporation Commission [Member]
Oklahoma Corporation Commission [Member]
Lessee, Operating Lease, Term of Contract
Operating lease, term of contract
Research and Development Credits [Member]
Research and Development Credits [Member]
Research and Development Credits
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Due May 24, 2027
Term Loan Due May Twenty Four Two Thousand Twenty Seven [Member]
Term Loan Due May Twenty Four Two Thousand Twenty Seven.
Amortization of unrecognized prior service cost
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Cybersecurity Risk Management Processes Integrated [Flag]
Document Transition Report
Document Transition Report
Operating expenses
Operating Expenses
Series Due April 1, 2055 [Member]
Series Due April 1, 2055.
Interest and dividends receivable [Member]
Interest and dividends receivable [Member]
Interest and Dividends Receivable [Member]
Status [Axis]
Status [Axis]
Status
Domestic Mid-Cap Equity [Member]
Domestic Mid-Cap Equity [Member]
Domestic Mid-Cap Equity [Member]
Leases
Lessee, Operating Leases [Text Block]
Conversion of Stock, Amount Issued
Conversion price
Document [Domain]
Document [Domain]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Components of Income Tax Expense
Deferred Tax Assets, Operating Loss Carryforwards, State and Local
Deferred Tax Assets, Operating Loss Carryforwards, State and Local
Pension and Other Postretirement Plans, Nonpension Benefits, Policy [Policy Text Block]
Pension and Other Postretirement Plans, Nonpension Benefits, Policy [Policy Text Block]
Regulated and Unregulated Operation [Domain]
Liability, Defined Benefit Plan, Noncurrent
Liability, Defined Benefit Plan, Noncurrent, Total
Accrued benefit obligations
Statement of Cash Flows [Abstract]
Statement of Cash Flows [Abstract]
Amortization of prior service cost, net of tax of $0.1, $0.1 and $0.1, respectively
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax
Current Federal Tax Expense (Benefit)
Current Federal Tax Expense
Stock Issued During Period, Value, New Issues
Issuance of common stock
SPP Cost Tracker Rider Under Recovery [Member]
SPP Cost Tracker Rider Under Recovery [Member]
SPP cost tracker under recovery [Member]
Pension and Other Postretirement Plans, Policy [Policy Text Block]
Pension and Other Postretirement Plans, Policy [Policy Text Block]
Regulatory liabilities
Non-Current Deferred Tax Assets, Regulatory Liabilities
Non-Current Deferred Tax Assets, Regulatory Liabilities
Net income, Number of Shares
Net Income (Loss), Including portion attributable to noncontrolling interest, Number of Shares
Net Income (Loss), Including portion attributable to noncontrolling interest, Number of Shares
Provision for Rate Refund and Tax Refund
Provision for Rate Refund and Tax Refund [Member]
Provision for rate refund and tax refund.
Unrecognized Tax Benefits
Unrecognized Tax Benefits that Would Impact Effective Tax Rate
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Net of Unconsolidated Affiliates
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Net of Unconsolidated Affiliates
Net periodic benefit cost
Debt Security, Government, Non-US [Member]
Foreign government bonds [Member]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Level 3 Asset Value, Beginning of Period
Level 3 Asset Value, End of Period
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Other
Deferred Tax Liabilities, Other
Other
Cybersecurity Risk Management Processes Integrated [Text Block]
NET INCOME
Fuel, materials and supplies inventories
Increase (Decrease) in Inventories
Increase (Decrease) in Inventories, Total
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax, Total
Accumulated other comprehensive income (loss)
Accumulated other comprehensive income (loss)
Total Retail Customer [Member]
Total Retail Customer [Member]
Total Retail Customer [Member]
System Sales Revenues
Other Nonoperating Income
Other income
Operating Lease, Cost
Operating lease cost
Income taxes receivable
Income Taxes Receivable, Current
Expected Dividend Rate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Line of Credit Facility [Line Items]
Line of Credit Facility [Line Items]
Allowance for equity funds used during construction
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity
Allowance for equity funds used during construction
Revisions in estimated cash flows
Asset Retirement Obligation, Revision of Estimate
ASSETS
Assets [Abstract]
Risk Free Interest Rate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Government Assistance, Income, Increase (Decrease), Statement of Income or Comprehensive Income [Extensible Enumeration]
Document Fiscal Year Focus
Document Fiscal Year Focus
SB 998 Deferred Costs, Net [Member]
Senate Bill Nine Nine Eight Deferred Costs Net [Member]
Senate Bill 998 deferred Ccsts, net.
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Summary of Accumulated Other Comprehensive Income (Loss) (Details)
Two Thousand And Twenty Two Stock Incentive Plan [Member]
Two thousand and twenty two stock incentive plan.
2022 Stock Incentive Plan
CASH FLOWS FROM INVESTING ACTIVITIES
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Retirement Benefits [Abstract]
Retirement Benefits [Abstract]
Schedule II Valuation and Qualifying Accounts [Table Text Block]
Schedule II Valuation and Qualifying Accounts [Table Text Block]
Schedule II Valuation and Qualifying Accounts
Accounts Payable, Current
Accounts Payable, Current, Total
Accounts payable
Interest Expense, Long-Term Debt
Interest Expense, Long-Term Debt, Total
Interest on long-term debt
Other Operations [Member]
Other Operating Segment [Member]
OG&E Industrial Authority Bonds [Member]
Og And E Industrial Authority Bonds [Member]
Og And E Industrial Authority Bonds [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant
Participants' contributions
Other assets
Increase (Decrease) in Other Noncurrent Assets
Accounting Standards Update and Change in Accounting Principle [Abstract]
Deferred Federal Income Tax Expense (Benefit)
Deferred Federal Income Tax Expense
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest
Equity Securities, FV-NI, Gain (Loss)
Equity Securities, FV-NI, Gain (Loss), Total
Gain on equity securities
Gain on equity securities (Note 1)
Gain on investment in equity securities (Note 1)
Subsidiary or Equity Method Investee, Sale of Stock [Table]
Defined Benefit Plan Prior Service Cost [Member]
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
Regulatory assets
Increase (Decrease) in Other Regulatory Assets
Regulatory assets
SPP Cost Tracker Over Recoveries [Member]
S P P Cost Tracker Over Recoveries [Member]
SPP cost tracker over recoveries.
Fair Value Measurement, Policy
Fair Value Measurement, Policy [Policy Text Block]
Limited Partner Units Owned
Limited Partner Units Owned
Limited Partner Units Owned
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block]
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets
Operating Costs Charged [Member]
Operating Costs Charged [Member]
Operating Costs Charged [Member]
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Year One
2026
Projected provision for depreciation in next fiscal year
Projected provision for depreciation in next fiscal year
Projected provision for depreciation in next fiscal year
Gain (Loss) on Disposition of Oil and Gas and Timber Property, Total
Gain (Loss) on Disposition of Oil and Gas and Timber Property
Gain on Enable/Energy Transfer transaction (Note 1)
Electric Transmission [Member]
Electric Transmission [Member]
Long-Term Line of Credit
Long-Term Line of Credit, Total
Line of Credit Outstanding, Amount
Debt Instrument [Axis]
Debt Instrument [Axis]
Advances from parent
Advances from parent
Advances from parent
Derivative, by Nature [Axis]
Derivative Instrument [Axis]
Lessee, Operating Lease, Liability, to be Paid, after Year Five
Thereafter
Tinker Air Force Base distribution assets purchase
Fair Value of Assets Acquired
Interest cost
Defined Benefit Plan, Interest Cost
Total Compensation Cost Not yet Recognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
Sale of Stock [Axis]
Jointly Owned Utility Plant, Ownership Amount of Construction Work in Progress
Jointly Owned Utility Plant, Ownership Amount of Construction Work in Progress
December 13, 2017 [Member]
December 13, 2017 [Member]
December 13, 2017 [Member]
Defined Benefit Plan, Expected Future Benefit Payment, Year One
Expected Future Benefit Payments, Next Twelve Months
Equity Method Investments and Joint Ventures Disclosure [Text Block]
Equity Method Investments and Joint Ventures Disclosure [Text Block]
Operating revenues
Revenues
Total revenues
Operating revenues
Income taxes receivable
Increase (Decrease) in Income Taxes Receivable
Net cash used in investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Series Due May 26, 2023
Series Due May 26, 2023 [Member]
Series Due May 26, 2023 [Member]
Regulation Status [Axis]
Title of 12(b) Security
Title of 12(b) Security
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Accumulated Other Comprehensive Income Loss Abstract
Accumulated Other Comprehensive Income (Loss) [Abstract]
Accumulated Other Comprehensive Income (Loss) [Abstract]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Oklahoma zero emission tax credits [Member]
Oklahoma zero emission tax credits [Member] [Member]
Oklahoma zero emission tax credits [Member] [Member]
Postretirement Plan, Expected Future Benefit Payments, Year Two
Postretirement Plan, Expected Future Benefit Payments in Year Two
Postretirement Plan, Expected Future Benefit Payments in Year Two
Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Money market funds [Member]
Money Market Funds [Member]
Related Party [Domain]
Related and Nonrelated Parties [Domain]
ArcLight group [Member]
ArcLight Group [Member]
ArcLight group [Member]
Public Utilities, Property, Plant and Equipment, Plant in Service
Public Utilities, Property, Plant and Equipment, Plant in Service, Total
In service
Provision for Depreciation Rate
Provision for Depreciation Rate
Provision for Depreciation Rate
Income Tax Disclosure [Text Block]
Income Taxes
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Interest Expense [Member]
Interest Expense [Member]
Muskogee Industrial Authority Bond Due 2027 [Member]
Muskogee Industrial Authority, June 1, 2027 [Member]
Muskogee Industrial Authority Bond Due 2027 [Member]
Muskogee Industrial Authority Bond Due 2027 [Member]
Document Information [Table]
Document Information [Table]
Other
Other Liabilities, Noncurrent
100% [Member]
100% [Member]
100% [Member]
Interest Expense, Short-Term Borrowings
Interest Expense, Short-Term Borrowings, Total
Interest on short-term debt and other interest charges
Liabilities, Other than Long-Term Debt, Noncurrent
Total deferred credits and other liabilities
Legal Entity [Axis]
Legal Entity [Axis]
Change in certain current assets and liabilities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Performance Units Related to Earnings Per Share [Member]
Performance Units Related to Earnings Per Share [Member]
Performance Units Related to Earnings Per Share [Member]
Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]
Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]
Summary of Property Plant and Equipment
Property, Plant and Equipment [Table Text Block]
Forward Equity Sale Agreements [Member]
Forward Equity Sale Agreements.
Forward equity sale agreements [Member]
Letters of Credit Outstanding, Amount
Letters of Credit Outstanding, Amount
Aggregate outstanding stated amount of letters of credit issued
Accounting Records [Abstract]
Accounting Records [Abstract]
Accounting Records [Abstract]
Fair Value of Plan Assets, Beginning
Fair Value of Plan Assets, Ending
Defined Benefit Plan, Plan Assets, Amount
Fair Value of Plan Assets
Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised
Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised, Total
Cash paid for employee equity-based compensation
Cash paid for employee equity-based compensation
Series Due August 1, 2034 [Member]
Series Due August 1, 2034 [Member]
Series Due August 1, 2034 [Member]
Income Tax Disclosure [Abstract]
Components of Benefit Obligation Regulatory Asset [Axis]
Components of Benefit Obligation Regulatory Asset [Axis]
Components of Benefit Obligation Regulatory Asset [Axis]
Public Utilities, Property, Plant and Equipment [Abstract]
Unrecognized Tax Benefits
Unrecognized Tax Benefits
Unrecognized Tax Benefits, Beginning Balance
Unrecognized Tax Benefits, Ending Balance
Premium on Common Stock
Additional Paid-in Capital [Member]
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Curtailment Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Debt Restriction Maximum Letters of Credit
Debt Restriction Maximum Letters of Credit
Debt Restriction Maximum Letters of Credit
Fair Value, Measurement Frequency [Domain]
Measurement Frequency [Domain]
Income Statement Location [Axis]
Statement of Income Location, Balance [Axis]
Senior Notes [Member]
Senior Notes [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Trading Symbol
Trading Symbol
Property, Plant and Equipment Disclosure [Text Block]
Property, Plant and Equipment Disclosure [Text Block]
OGE Energy Senior Notes [Member]
Oge Energy Senior Notes [Member]
Oge Energy Senior Notes [Member]
Performance Units Total Shareholder Return Valuation Assumptions [Table Text Block]
Performance Units Total Shareholder Return Valuation Assumptions [Table Text Block]
Performance Units Total Shareholder Return Valuation Assumptions [Table Text Block]
Schedule of Performance Units Granted and Assumptions Used to Calculate Grant Date Fair Value of Performance Units
Schedule of Related Party Transactions, by Related Party [Table]
Related Party Transaction [Table]
110% [Member]
110% [Member]
110% [Member]
Equity Securities, FV-NI, Current
Equity Securities, FV-NI, Current
Plan Investments, Policies and Strategies, Policy [Policy Text Block]
Plan Investments, Policies and Strategies [Policy Text Block]
Plan Investments, Policies and Strategies [Policy Text Block]
Subsequent Event Type [Axis]
Employee-related Liabilities, Current
Employee-related Liabilities, Current, Total
Accrued compensation
Pension Plan Equity Asset Allocation Table [Table Text Block]
Pension Plan Equity Allocation Table [Table Text Block]
Pension Plan Equity Asset Allocation Table
CASH FLOWS FROM FINANCING ACTIVITIES
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Related Party Transaction, Purchases from Related Party
Related Party Transaction, Purchases from Related Party
Expected Term
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term
Recurring [Member]
Fair Value, Recurring [Member]
Cost of removal
Payments for Removal Costs
Fuel Adjustment Clauses, Policy [Policy Text Block]
Capitalization and Amortization of Fuel Costs, Policy [Policy Text Block]
Fuel Adjustment Clauses
Schedule of Equity Method Investments [Line Items]
Schedule of Equity Method Investments [Line Items]
Lessee, Operating Lease, Liability, to be Paid
Total future minimum lease payments
Impact to Company [Member]
Impact to Company [Member]
Impact to Company [Member]
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Less: Imputed interest
Dry Scrubber Regulatory Asset [Member]
Dry Scrubber Regulatory Asset [Member]
Dry Scrubber Regulatory Asset [Member]
Series Due August 15, 2028 [Member] [Member]
Series Due August 15, 2028 [Member] [Member]
Series Due August 15, 2028 [Member]
Distribution Made to Limited Partner, Distributions Declared, Per Unit
Distribution Made to Limited Partner, Distributions Declared, Per Unit
Percentage Share of Management Rights
Percentage Share of Management Rights
Percentage Share of Management Rights
Equity Components [Axis]
Equity Components [Axis]
Statement, Equity Components [Axis]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Louisiana inventory credits
Louisiana inventory credits [Member]
Louisiana inventory credits
Net other income
Nonoperating Income (Expense)
Equity Component [Domain]
Equity Component [Domain]
Equity Component [Domain]
Share-based Compensation, Activity [Table Text Block]
Share-Based Payment Arrangement, Activity [Table Text Block]
Schedule of Activity for Performance Units and Restricted Stock Units
Percentage of Enogex LLC Contributed
Percentage of Enogex LLC Contributed
Percentage of Enogex LLC Contributed
Asset Class [Axis]
Asset Class [Axis]
Advances to parent
Advances to parent
Advances receivable, within one year or the normal operating cycle, from a party that is affiliated with the reporting entity by means of direct or indirect ownership. This does not include advances from clients.
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Capital contribution from OGE Energy, Number of Shares
Capital Contribution From Parent Company, Shares Issued
Capital contribution from parent company shares issued.
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Number of Shares
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Number of Shares
Stock-based compensation, Number of Shares
OG&E Generation Capacity Construction Expenditures [Member]
OG&E Generation Capacity Construction Expenditures [Member]
Og&e generation capacity construction expenditures.
Income taxes.
Income Taxes [Table]
Fair value, measurement with unobservable inputs reconciliation, recurring basis, net unrealized gains related to instruments held
Fair value, measurement with unobservable inputs reconciliation, recurring basis, net unrealized gains related to instruments held.
Net unrealized gains related to instruments held at the reporting date
Net unrealized gains related to instruments held at the reporting date
Electric Transmission and Distribution [Member]
Electric Distribution [Member]
Document Annual Report
Document Annual Report
Total Shareholder Return [Member]
Total Shareholder Return [Member]
Total Shareholder Return [Member]
Eurodollar base rate.
Eurodollar Base Rate [Member]
Schedule of Capitalization [Table]
Schedule of Capitalization [Table]
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Other current assets
Increase (Decrease) in Other Current Assets
Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase
IPO [Member]
Common Stock, Terms of Conversion
Common Stock, Terms of Conversion
Customer [Axis]
Customer [Axis]
Debt Instrument Maximum Leverage Ratio
Debt Instrument Maximum Leverage Ratio
Debt Instrument Maximum Leverage Ratio
105% [Member]
105% [Member]
105% [Member]
Proceeds from Contributed Capital, Shares
Proceeds from Contributed Capital, Shares
Capital contribution from OGE Energy, Number of Shares
Depreciation, Depletion and Amortization, Nonproduction
Depreciation, Depletion and Amortization, Nonproduction, Total
Depreciation and amortization
Statement of Comprehensive Income [Abstract]
Statement of Comprehensive Income [Abstract]
Equity Method Investment, Nonconsolidated Investee [Axis]
Equity Method Investment, Nonconsolidated Investee [Axis]
Equity Method Investment, Other than Temporary Impairment
Equity Method Investment, Other than Temporary Impairment
Equity Method Investment, Other-than-Temporary Impairment
Muskogee Industrial Authority Bond Due 2025 [Member]
Muskogee Industrial Authority, Janaury 1, 2025 [Member]
Muskogee Industrial Authority Bond Due 2025 [Member]
Muskogee Industrial Authority Bond Due 2025 [Member]
Health Care Cost Trend Rate Assumed for Next Fiscal Year
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year
Maximum [Member]
Maximum [Member]
Range [Axis]
Statistical Measurement [Axis]
Related party transactions.
Related Party Transactions [Policy Text Block]
Related Party Transactions
Energy Efficiency Rider Over Recoveries [Member]
Energy efficiency rider over recoveries.
Oklahoma Energy Efficiency Rider Under Recovery [Member]
Postretirement medical and life insurance benefits
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits
Common Stock, Value
Common Stock, Value, Issued
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Settlement Agreement [Member]
Settlement Agreement [Member]
Settlement Agreement.
Postretirement Plan, Expected Future Benefit Payments, Year Five
Postretirement Plan, Expected Future Benefit Payments in Year Five
Postretirement Plan, Expected Future Benefit Payments in Year Five
Regulatory Jurisdiction [Domain]
Domain representing geographic areas such as states or regions in which the entity is subject to regulatory or legislative requirements.
Other Contracts with Customers [Member]
Other Contracts with Customers [Member]
Other
Maturity
Line of Credit Facility, Expiration Date
Credit facility termination date
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
Reclassified Out of Accumulated Other Comprehensive Income (Loss)
Organization
Consolidation, Policy [Policy Text Block]
Consolidation, Policy [Policy Text Block]
Balance
Balance
Equity, Including Portion Attributable to Noncontrolling Interest
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Total
Stockholder's equity
Income taxes recoverable from customers, net
Deferred Tax Liabilities, Income Taxes Refundable to Customers, Net
Deferred Tax Liabilities, Income Taxes Refundable to Customers, Net
Income taxes recoverable from customers, net
Legal Entity Type of Counterparty [Domain]
Legal Entity Type of Counterparty [Domain]
Pension Plan
Deferred Tax Liabilities, Prepaid Expenses
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
Tax Credit Carryforward [Axis]
Tax Credit Carryforward [Axis]
Other Regulatory Liabilities [Member]
Other Regulatory Liabilities [Member]
Other Regulatory Liabilities [Member]
Series Due May 24 2027 [Member]
Series Due May 24 2027.
Series Due May 24, 2027 [Member]
State income taxes, net of federal income tax benefit
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
Winter Storm Uri costs [Member]
Winter Storm Uri Costs [Member]
Winter Storm Uri Costs
Integrated Transmission Plan [Member]
Integrated transmission plan.
Entity Public Float
Entity Public Float
Other Comprehensive Income Amortization Of Defined Benefit Pension Plans Net Prior Service Cost Recognized in Net Periodic Pension Cost, Tax
Other Comprehensive Income Amortization Of Defined Benefit Pension Plans Net Prior Service Cost Recognized in Net Periodic Pension Cost, Tax
Amortization of prior service cost, net of tax of $0.1, $0.1 and $0.1, respectively
Expected Volatility Rate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Interest Payable, Current
Accrued interest
Equity Other Than Options, Employee Migration, Weighted Average Grant Date Fair Value
Equity Other Than Options, Employee Migration, Weighted Average Grant Date Fair Value
Equity Other Than Options, Employee Migration, Weighted Average Grant Date Fair Value
Inventory [Domain]
Inventory [Domain]
Accrued Vacation, Policy [Policy Text Block]
Accrued vacation policy [Policy Text Block]
Accrued vacation policy [Policy Text Block]
Accrued Vacation
Public Utilities, Property, Plant and Equipment, Amount of Acquisition Adjustments, Related Accumulated Depreciation
Public Utilities, Property, Plant and Equipment, Amount of Acquisition Adjustments, Related Accumulated Depreciation
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Percent of Incentive Distribution Rights
Percent of Incentive Distribution Rights
Percent of Incentive Distribution Rights
Revenue Recognition
Revenue from Contract with Customer [Text Block]
Entity Registrant Name
Entity Registrant Name
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total
Entity Voluntary Filers
Entity Voluntary Filers
Series Due January 15, 2016 [Member]
Series Due January 15, 2016 [Member]
Series Due January 15, 2016 [Member]
OG&E long-term service agreement commitments [Member]
OG&E long-term service agreement commitments [Member]
OG&E long-term service agreement commitments [Member]
Treasury Stock, Shares, Acquired
Purchase of treasury stock, Number of Shares
Other Nonoperating Income (Expense)
Other Nonoperating Income (Expense), Total
Other income
Deferred State and Local Income Tax Expense (Benefit)
Deferred State and Local Income Tax Expense
Conversion of shares
Conversion of Stock, Shares Issued
Series Due December 15, 2044 [Member]
Series due December 15, 2044 [Member]
Series due December 15, 2044 [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Cybersecurity Risk Management Positions or Committees Responsible [Flag]
INCOME TAX EXPENSE
Income Tax Expense
Income tax expense (benefit)
Income Tax Expense (Benefit)
Effective income tax rate, amount
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Total other property and investments
Other Investments
Capital expenditures (less allowance for equity funds used during construction)
Payments to Acquire Productive Assets
Payments to Acquire Productive Assets, Total
Capital expenditures
Defined Benefit Plan, Expected Future Benefit Payment, Year Five
Expected Future Benefit Payments, Year Five
Senior Notes Due May Fifteen Twenty Twenty Nine [Member]
Senior notes due may fifteen twenty twenty nine.
Senior Notes due May 15, 2029
Proceeds from Issuance of Common Stock
Proceeds (costs) from issuance of common stock
Proceeds from issuance of common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Minimum payout range
Minimum payout range
Minimum payout range
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Partners' Capital Account, Units, Acquisitions
Partners' Capital Account, Units, Acquisitions
Public Utilities, Allowance for Funds Used During Construction, Rate
Public Utilities, Allowance for Funds Used During Construction, Rate
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax
Accumulated other comprehensive income (loss).
Accumulated Other Comprehensive Income (Loss) [Policy Text Block]
Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive (income) loss
Accumulated other comprehensive loss, net of tax
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated other comprehensive loss, net of tax
Accumulated other comprehensive loss, net of tax
Summarized Income Statement Financial Information, Equity Method Investment [Table Text Block]
Summarized Income Statement Financial Information, Equity Method Investment [Table Text Block]
Summarized Income Statement Financial Information for Equity Method Investment
Consolidation Items [Axis]
Property, Plant and Equipment, Other Types [Member]
Property, Plant and Equipment, Other Types [Member]
Less Than 90% [Member]
Less Than 90% [Member]
Less Than 90% [Member]
Total assets
Assets
TOTAL ASSETS
Inventory, Policy [Policy Text Block]
Inventory, Policy [Policy Text Block]
Fuel Inventories
Tranche Two [Member]
Tranche Two.
2029 [Member]
Income Tax Paid, State and Local, after Refund Received
Income Tax Paid, State and Local, after Refund Received, Total
State income taxes (net of income tax refunds)
Income Statement [Abstract]
Income Statement [Abstract]
Fuel inventories
Public Utilities, Inventory
Other Investments [Abstract]
OTHER PROPERTY AND INVESTMENTS
Fair Value of Financial Instruments, Policy [Policy Text Block]
Fair Value of Financial Instruments, Policy [Policy Text Block]
Equity Instruments Other than Options, Outstanding, Aggregrate Intrinsic Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding
Increase in fair value of net assets
Increase in Fair Value of Net Assets
Increase in Fair Value of Net Assets
Share-based Compensation, Option and Incentive Plans, Policy [Policy Text Block]
Share-Based Payment Arrangement [Policy Text Block]
Defined Benefit Plan, Amortization of Gain (Loss)
Amortization of net loss (gain)
Amortization of net loss (gain)
Deferred Income Tax Expense (Benefit)
Deferred Income Tax Expense
State tax credits
Non-Current Deferred Tax Assets, State Tax Credits
Non-Current Deferred Tax Assets, State Tax Credits
Sale of Stock, Number of Shares Issued in Transaction
Number of shares issued
Type of Acceleration of Debt [Domain]
Type of Acceleration of Debt [Domain]
[Domain] for Type of Acceleration of Debt [Axis]
Reconciliation of Basis Difference [Table Text Block]
Reconciliation of Basis Difference [Table Text Block]
[Table Text Block] for Reconciliation of Basis Difference [Table]
Stock Issued During Period, Shares, New Issues
New common stock shares issued
Issuance of common stock, Number of Shares
Depreciation and Amortization, Policy [Policy Text Block]
Depreciation, Depletion, and Amortization [Policy Text Block]
Depreciation and Amortization
Equity Instruments Other than Options, Vested in Period
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Schedule of Allocation of Plan Assets [Table Text Block]
Schedule of Allocation of Plan Assets
DILUTED EARNINGS PER AVERAGE COMMON SHARE
Diluted earnings per average common share
Earnings Per Share, Diluted
Earnings Per Share, Diluted, Total
Common Stocks, Including Additional Paid in Capital
Common stockholder's equity
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Summary of OGE Energy's Business Segments
Operating Segments [Member]
Operating Segments [Member]
Oklahoma fuel clause over recoveries [Member]
Oklahoma Fuel Clause Over Recoveries [Member]
Oklahoma fuel clause over recoveries.
Deferred Pension Expenses [Member]
Deferred Pension Expenses [Member]
Deferred Pension Expenses [Member]
OG&E total cogeneration payments [Member]
OG&E total cogeneration payments [Member]
OG&E total cogeneration payments [Member]
Federal tax credits, amount
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount
Federal tax credits, amount
Dividends, Common Stock
Dividends, Common Stock
Dividends, Common Stock, Total
Asset retirement obligations
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Asset Retirement Obligations
Schedule of Wind Power Purchases [Table Text Block]
Schedule of Wind Power Purchases [Table Text Block]
Schedule of Wind Purchased Power
City Area Code
City Area Code
Long-term Debt, Unclassified [Abstract]
Long-Term Debt, Unclassified [Abstract]
Property, Plant and Equipment [Line Items]
Public Utility, Property, Plant and Equipment [Line Items]
Debt Instrument, Issued, Principal
Aggregate total principal amount
Series due September 1, 2018 [Member]
Series due September 1, 2018 [Member]
Series due September 1, 2018 [Member]
Other comprehensive income, net of tax
Other comprehensive income, net of tax
Other comprehensive income (loss), net of tax
Net current period other comprehensive income (loss)
Summary of Significant Accounting Policies [Line Items]
Summary of significant accounting policies.
Auditor Name
Auditor Name
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
Schedule of Defined Benefit Plans Disclosures
Excluding Fuel Purchases [Member]
Excluding Fuel Purchases [Member]
Excluding Fuel Purchases [Member]
Noncash or Part Noncash Acquisition, Investments Acquired
Noncash or Part Noncash Acquisition, Investments Acquired
Industrial [Member]
Industrial [Member]
Industrial
Aggregate Commitment
Line of Credit Facility, Maximum Borrowing Capacity
Line of Credit Facility, Maximum Borrowing Capacity
Fair Value of Vested Performance Units and Restricted Stock
Fair Value of Vested Performance Units and Restricted Stock
Fair Value of Vested Performance Units and Restricted Stock
Defined Benefit Plan [Table]
Federal tax credits
Tax Credit Carryforward, Deferred Tax Asset
Deferred Tax Assets, Tax Credit Carryforwards
Deferred Tax Assets, Tax Credit Carryforwards, Total
Integrated Market [Member]
Integrated Market [Member]
Integrated Market
Deferred storm expenses [Member]
Deferred storm expenses [Member]
Deferred storm expenses [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested
Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested
Operating Lease, Weighted Average Remaining Lease Term
Operating Lease, Weighted Average Remaining Lease Term
Operating lease weighted-average remaining lease term (in years)
Summary of Tax Credit Carryforwards [Table Text Block]
Summary of Tax Credit Carryforwards
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents
Distributions received
Proceeds from Equity Method Investment, Distribution
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax
Amortization of deferred net loss, net of tax of $0.1, $0.1 and $0.2, respectively
Property, Plant and Equipment, Net
Net property, plant and equipment
Defined Benefit Plan, Expected Future Benefit Payment, Year Three
Expected Future Benefit Payments, Year Three
Regulatory Liability, Noncurrent
Regulatory liabilities
Regulatory Liability, Noncurrent
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR
CASH AND CASH EQUIVALENTS AT END OF YEAR
OG&E capacity payments [Member]
OG&E capacity payments [Member]
OG&E capacity payments [Member]
Operating Income (Loss)
OPERATING INCOME
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate
Forward equity sale agreements
Forward Contract Indexed to Issuer's Equity, Shares
Short Term Borrowing Capacity That Has Regulatory Approval
Short Term Borrowing Capacity That Has Regulatory Approval
Short Term Borrowing Capacity That Has Regulatory Approval
Retained Earnings [Member]
Retained Earnings
Retained Earnings [Member]
Defined Benefit Plans Income Loss [Member]
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
Stock-based compensation expense
Share-Based Payment Arrangement, Noncash Expense
Share-Based Payment Arrangement, Noncash Expense, Total
Horseshoe Lake Plant [Member]
Horseshoe Lake Plant
Number of hydrogen capable combustion turbines
Number of Hydrogen Capable Combustion Turbines
Number of hydrogen capable combustion turbines.
Unrecorded Unconditional Purchase Obligation, Due within Four Years
Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four
Long-term Purchase Commitment, Amount
Unrecorded Unconditional Purchase Obligation
Unrecorded Unconditional Purchase Obligation, Total
Other Nonoperating Expense
Other expense
Bond redemption-unamortized costs
Deferred Tax Liabilities, Unamortized Bond Redemption Costs
Deferred Tax Liabilities, Unamortized Bond Redemption Costs
OGE Energy And OG&E [Member]
OGE Energy and OG&E.
OGE Energy and OG&E [Member]
Operating Lease, Weighted Average Discount Rate, Percent
Operating Lease, Weighted Average Discount Rate, Percent
Operating lease weighted-average discount rate
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 1 [Member]
Class of Stock [Line Items]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash (used in) provided from financing activities
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]
Lease, Cost [Table Text Block]
Schedule of Financial Statement Information of Lease Liabilities
Unamortized debt expense
Unamortized Debt Issuance Expense
Auditor Location
Auditor Location
Long-term Debt [Member]
Long-Term Debt [Member]
Energy Transfer
Energy Transfer [Member]
Energy Transfer
Enable Midstream [Member]
Enable Midstream
Enable Midstream [Member]
Deferred Income Tax Liabilities, Net
Total deferred income tax liabilities, net
Deferred income taxes
Deferred Income Tax Liabilities, Net, Total
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]
Accrued removal obligations [Member]
Accrued removal obligations [Member]
Accrued removal obligations [Member]
Nonoperating Income (Expense) [Abstract]
OTHER INCOME (EXPENSE)
Derivative, Name [Domain]
Derivative Contract [Domain]
Entity Information [Line Items]
Corporate Debt Securities [Member]
Corporate fixed income and other securities [Member]
Entity Interactive Data Current
Entity Interactive Data Current
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits
Special termination benefits
Arkansas Jurisdiction.
Arkansas Jurisdiction [Member]
Arkansas Jurisdiction
Percentage of output purchased
Percentage of output purchased
Percentage of output purchased
Defined Benefit Plan, Plan Assets, Category [Axis]
Defined Benefit Plan, Plan Assets, Category [Axis]
Restricted Stock Valuation Assumptions [Table Text Block]
Restricted Stock Valuation Assumptions [Table Text Block]
Restricted Stock Valuation Assumptions [Table Text Block]
Schedule of Restricted Stock Units Granted and Grant Date Fair Value
Defined Benefit Plan, Plan Assets, Category
Defined Benefit Plan, Plan Assets, Category [Table Text Block]
Income Statement Location [Domain]
Statement of Income Location, Balance [Domain]
Deferred Fuel Cost
Fuel clause under recoveries
STATEMENTS OF CAPITALIZATION [Abstract]
STATEMENTS OF CAPITALIZATION [Abstract]
STATEMENTS OF CAPITALIZATION [Abstract]
CASH FLOWS FROM OPERATING ACTIVITIES
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Projected Benefit Obligation Funded Status Thresholds
Projected Benefit Obligation Funded Status Thresholds
Projected Benefit Obligation Funded Status Thresholds
Capital contribution from OGE Energy
Proceeds from Contributed Capital
Gas Transmission Equipment [Member]
Transmission Equipment [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]
Accounting Standards Update and Change in Accounting Principle [Text Block]
Accounting Pronouncements
Locations [Domain]
Locations.
Estimated Refund to SPP [Domain]
Estimated Refund to SPP [Domain]
Estimated Refund to SPP
Natural Gas Purchases [Member]
Natural Gas Purchases [Member]
Natural Gas Purchases [Member]
Entity by Location [Axis]
Entity by Location [Axis]
Catastrophic Event [Domain]
Mass-Based Carbon Reduction
Mass-Based Carbon Reduction
Mass-Based Carbon Reduction
Unbilled Receivables, Current
Accrued unbilled revenues
Unrecognized Tax Benefits, Income Tax Penalties Accrued
Uncertain tax positions, Interest
Other liabilities
Increase (Decrease) in Other Noncurrent Liabilities
Dividends declared on common stock, Number of Shares
Dividends, Common Stock, Cash, Number of Shares
Dividends, Common Stock, Cash, Number of Shares
Dividends, Common Stock, Cash, Number of Shares
Dividends declared on common stock, Number of Shares
SPP Resource Adequacy [Member]
SPP resource adequacy.
SPP Resource Adequacy [Member]
OKLAHOMA
OKLAHOMA
Oklahoma [Member]
DIVIDENDS DECLARED PER COMMON SHARE
Common Stock, Dividends, Per Share, Declared
Line of Credit Facility, Current Borrowing Capacity
Line of Credit Facility, Current Borrowing Capacity
Tax Benefit from Compensation Expense
Share-Based Payment Arrangement, Expense, Tax Benefit
Income tax benefit
Type of Acceleration of Debt [Axis]
Type of Acceleration of Debt [Axis]
Type of Acceleration of Debt [Axis]
Entity Tax Identification Number
Entity Tax Identification Number
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
STOCKHOLDER'S EQUITY
Share Price
Share Price
Long-term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Short-term Debt [Abstract]
Short-Term Debt [Abstract]
Pension and Other Postretirement Benefits Cost (Reversal of Cost)
Pension and Other Postretirement Benefits Cost (Reversal of Cost), Total
Other net periodic benefit (expense) income
Other Inventory, Supplies, Gross
Materials and supplies, at average cost
Debt Instrument, Term
Debt Instrument, Term
Percent Of Intangible Plant Balance Amortizable
Percent Of Intangible Plant Balance Amortizable
Percent Of Intangible Plant Balance Amortizable
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Summary of Significant Accounting Policies
Total Property Plant and Equipment [Member]
Total Property Plant and Equipment [Member]
Total Property Plant and Equipment [Member]
Construction in Progress, Gross
Construction work in progress
Local Phone Number
Local Phone Number
Financial Instruments Subject to Mandatory Redemption, Financial Instrument [Domain]
Financial Instruments Subject to Mandatory Redemption, Financial Instrument [Domain]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Net periodic benefit cost
Total net periodic benefit cost
Other
Other Liabilities, Current
Amounts reclassified from accumulated other comprehensive income (loss)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Amortization of deferred net loss, net of tax of $0.1, $0.1 and $0.2, respectively
Auditor Opinion [Text Block]
Accounting Policies [Abstract]
Accounting Policies [Abstract]
Regulatory liabilities
Increase (Decrease) in Regulatory Liabilities
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax
Revenue from Contract with Customer, Excluding Assessed Tax
Revenues from contracts with customers
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
Public Utilities, Requested Rate Increase (Decrease), Amount
Public Utilities, Requested Rate Increase (Decrease), Amount
Lessee, Operating Lease, Liability, to be Paid, Year Four
2029
Equity Other Than Options, Nonvested, Employee Migration
Equity other than options, nonvested, employee migration.
Equity Other Than Options, Employee Migration
Summarized Financial Information of Equity Method Investment [Table]
Summarized Financial Information of Equity Method Investment [Table]
Summarized Financial Information of Equity Method Investment [Table]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Total Compensation Cost Not yet Recognized, Period for Recognition
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Subordinated Units Held by Limited Partners of the LLC or LP
Subordinated Units Held by Limited Partners of the LLC or LP
The number of subordinated units held by one or more members or limited partners of the LLC or LP.
Stock, Class of Stock [Table]
Entity Emerging Growth Company
Entity Emerging Growth Company
Tax Credit Carryforward, Name [Domain]
Tax Credit Carryforward, Name [Domain]