75000 - Document - Document and Entity Information Document
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75010 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited)
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75020 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)
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75030 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical)
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75040 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)
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75050 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)
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75060 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) Parenthetical
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75070 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited)
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75080 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) Parenthetical
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995455 - Disclosure - Summary of Significant Accounting Policies
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995465 - Disclosure - Accounting Pronouncements
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995475 - Disclosure - Revenue Recognition
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995485 - Disclosure - Investment in Unconsolidated Affiliates
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995495 - Disclosure - Related Party Transactions
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995505 - Disclosure - Fair Value Measurements
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995515 - Disclosure - Stock Based Compensation
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995525 - Disclosure - Income Taxes
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995535 - Disclosure - Common Equity
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995545 - Disclosure - Long-Term Debt
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995555 - Disclosure - Credit Facilities and Short-Term Debt
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995565 - Disclosure - Retirement Plans and Postretirement Benefit Plans
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995575 - Disclosure - Report of Business Segments
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995585 - Disclosure - Commitments and Contingencies
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995595 - Disclosure - Rate Matters and Regulation
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995605 - Disclosure - Summary of Significant Accounting Policies (Policies)
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995615 - Disclosure - Investments, Equity Method and Joint Ventures (Policies)
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995625 - Disclosure - Fair Value Measures and Disclosures (Policies)
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995635 - Disclosure - Summary of Significant Accounting Policies (Tables)
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995645 - Disclosure - Revenue Recognition (Tables)
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995655 - Disclosure - Investment in Unconsolidated Affiliates (Tables)
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995665 - Disclosure - Related Party Transactions (Tables)
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995675 - Disclosure - Fair Value Measurements (Tables)
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995685 - Disclosure - Stock Based Compensation (Tables)
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995695 - Disclosure - Common Equity (Tables)
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995705 - Disclosure - Long-Term Debt (Tables)
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995715 - Disclosure - Credit Facilities and Short-Term Debt (Tables)
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995725 - Disclosure - Retirement Plans and Postretirement Benefit Plans (Tables)
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995735 - Disclosure - Report of Business Segments (Tables)
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995745 - Disclosure - Summary of Significant Accounting Policies - Schedule of Regulatory Assets and Liabilities (Details)
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995755 - Disclosure - Summary of Significant Accounting Policies - Summary of Accumulated Other Comprehensive Income (Loss) (Details)
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995765 - Disclosure - Summary of Significant Accounting Policies - Summary of Amount Reclassified Out of Accumulated Other Comprehensive Income (Loss) (Details)
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995775 - Disclosure - Revenue Recognition (Details)
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995785 - Disclosure - Fair Value Measurements - Additional Information (Details)
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995795 - 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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995805 - Disclosure - Fair Value Measurements - Summary of Financial Instrument Measured at Fair Value On A Recurring Basis and Carrying Amount and Fair Value (Parenthetical) (Details)
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995815 - Disclosure - Stock-Based Compensation - Schedule of Pre-tax Compensation Expense and Related Income Tax Benefit (Details)
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995825 - Disclosure - Stock Based Compensation - Additional Information (Details)
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995835 - Disclosure - Common Equity - Automatic Dividend Reinvestment and Stock Purchase Plan - Additional Information (Details)
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995845 - Disclosure - Common Equity - Common Stock Public Offering and Forward Equity Sale Agreements - Additional Information (Details)
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995855 - Disclosure - Common Equity - Schedule of Earnings Per Share Basic and Diluted (Details)
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995865 - Disclosure - Long-Term Debt - Schedule of Long-term Debt Instruments (Details)
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995875 - Disclosure - Long-Term Debt (Additional Information) (Details)
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995885 - Disclosure - Credit Facilities and Short-Term Debt - Additional Information (Details)
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995895 - Disclosure - Credit Facilities and Short-Term Debt - Schedule of Line of Credit Facilities (Details)
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995905 - Disclosure - Credit Facilities and Short-Term Debt - Schedule of Line of Credit Facilities (Parenthetical) (Details)
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995915 - Disclosure - Retirement Plans and Postretirement Benefit Plans (Details)
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995925 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Schedule of Capitalized Pension and Postretirement Cost (Details)
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995935 - Disclosure - Retirement Plans and Postretirement Benefit Plans - Additional Information (Details)
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995945 - Disclosure - Report of Business Segments - Additional Information (Details)
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995955 - Disclosure - Report of Business Segments - Summary of OGE Energy's Business Segments (Details)
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995965 - Disclosure - Commitments and Contingencies (Details)
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995975 - Disclosure - Rate Matters and Regulation - Additional Information (Details)
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Other comprehensive income defined benefit pension plans intercompany shift of employees recognized in net periodic pension cost net of tax
Other comprehensive income defined benefit pension plans intercompany shift of employees recognized in net periodic pension cost net of tax
Intercompany shift of employees to OG&E, net of tax of $1.2 and $0.0, respectively
Intercompany shift of employees to OG&E, net of tax of $1.2 and $0.0, respectively
Intercompany shift of employees to OG&E
Retirement Plan Type [Axis]
Retirement Plan Type [Axis]
Deferred Plant Expense [Member]
Deferred Plant Expense
Deferred Plant Expense [Member]
Segments [Domain]
Segments [Domain]
Total [Domain]
Schedule of Related Party Transactions
Schedule of Related Party Transactions [Table Text Block]
Schedule of Related Party Transactions [Table Text Block]
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Grid Enhancement
Grid Enhancement [Member]
Grid Enhancement
Defined Benefit Plan, Plan Assets, Contributions by Employer
Employer contribution paid
Increase (Decrease) in Accounts Payable, Total
Increase (Decrease) in Accounts Payable
Accounts payable
Revenues from Alternative Revenue Programs
Revenues from Alternative Revenue Programs
Revenues from Alternative Revenue Programs
Other revenues
Long-Term Debt, Excluding Current Maturities, Total
Long-Term Debt, Excluding Current Maturities
LONG-TERM DEBT
Schedule of Long-term Debt Instruments
Schedule of Long-Term Debt Instruments [Table Text Block]
Plan Name [Axis]
Plan Name [Axis]
Rate Matters and Regulation [Table]
Equity [Abstract]
Equity [Abstract]
Rate Matters and Regulation
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.
Rate Matters And Regulation [Text Block]
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
Loss Contingency, Damages Sought, Value
Damages sought
Intercompany Borrowing Agreement - Maximum Borrowing Capacity
Intercompany Borrowing Agreement - Maximum Borrowing Capacity
Intercompany Borrowing Agreement - Maximum Borrowing Capacity
Operating Expenses [Abstract]
OPERATING EXPENSES
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, $0.0, $0.0 and $1.2, respectively
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Accounting Pronouncement [Abstract]
Accounting Pronouncement [Abstract]
Accounting Pronouncement [Abstract]
Document Fiscal Period Focus
Document Fiscal Period Focus
Debt Instrument, Interest Rate, Stated Percentage
Debt Instrument, Interest Rate, Stated Percentage
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Abstract]
Entity Shell Company
Entity Shell Company
Dividends declared on common stock
Dividends, Common Stock, Cash
Cash and Cash Equivalents, at Carrying Value, Total
Cash and Cash Equivalent
CASH AND CASH EQUIVALENTS AT END OF PERIOD
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD
Cash and cash equivalents
Commitments and Contingencies [Abstract]
Commitments and Contingencies [Abstract]
Commitments And Contingencies Abstract
Capacity Power Purchase Agreements [Member]
Capacity power purchase agreements.
Capacity Power Purchase Agreements [Member]
Statement [Table]
Statement [Table]
Asset Retirement Obligations [Table]
Settlement cost, net of tax of $0.0, $0.1, $0.0 and $0.3, respectively
Other Comprehensive Income (Loss), Defined Benefit Plan, Adjustment for Settlement or Curtailment Gain (Loss), Tax
Regulatory Liability [Axis]
Regulatory Liability [Axis]
Statement [Line Items]
Statement [Line Items]
Entity Filer Category
Entity Filer Category
Reclassifications
Reclassification, Comparability Adjustment [Policy Text Block]
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent
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, Equity Method Investment [Table Text Block]
Liabilities and Equity
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Long-term debt due within one year
Long-Term Debt, Current Maturities, Total
Long-Term Debt, Current Maturities
Fair Value, by Balance Sheet Grouping
Schedule of Fair Value and Carrying Amount of PRM Financial Instruments
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax
Amounts reclassified from accumulated other comprehensive income (loss)
COVID-19 Deferred Expenses [Member]
COVID-19 Deferred Expenses
COVID-19 Deferred Expenses [Member]
Schedule of Regulatory Assets and Liabilities [Line Items]
Schedule of Regulatory Assets and Liabilities [Line Items]
Schedule of Regulatory Assets and Liabilities [Line Items]
Investment Tax Credit Over Recoveries [Member]
Investment Tax Credit Over Recoveries [Member]
Investment tax credit over recoveries.
Integrated resource plans.
Integrated Resource Plans [Member]
Other Pension Plan [Member]
Other Pension Plan [Member]
Debentures Subject to Mandatory Redemption [Member]
Redeemable during the next 12 months
Accounts Receivable, Allowance for Credit Loss, Ending Balance
Accounts Receivable, Allowance for Credit Loss, Beginning Balance
Accounts Receivable, Allowance for Credit Loss
Accounts Receivable, Allowance for Credit Loss
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]
Regulatory Assets, Current
Regulatory Asset, Current
Current Regulatory Assets
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Table]
Schedule of Earnings Per Share Basic and Diluted
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Property, Plant and Equipment, Net [Abstract]
PROPERTY, PLANT AND EQUIPMENT
Other Regulatory Assets [Member]
Other Regulatory Assets [Member]
Other Regulatory Assets [Member]
Earnings Per Share, Basic, Total
Earnings Per Share, Basic
BASIC EARNINGS PER AVERAGE COMMON SHARE
Basic earnings per average common share
Disaggregation of Revenue
Disaggregation of Revenue [Table Text Block]
Payment of long-term debt
Repayments of Long-Term Debt
Repayments of Long-Term Debt, Total
Long term debt repaid
Amount Attributable to Parent
Amount Attributable to Parent
Plus: Amount allocated from OGE Energy
Retirement Benefits [Text Block]
Retirement Plans and Postretirement Benefit Plans
Retirement Plans and Postretirement Benefit Plans
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax, Total
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 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 and $1.2, respectively
Regulatory classification of certain pension costs, net of tax of $0.0, $0.0, $0.0 and $1.2, respectively
Revolving Credit Facility [Member]
Revolving Credit Facility [Member]
Retirement Plan Type [Domain]
Retirement Plan Type [Domain]
Liabilities, Current
Total current liabilities
Regulatory Assets, Noncurrent
Regulatory Asset, Noncurrent
Regulatory assets
Increase (Decrease) in Accounts Receivable
Accounts receivable and accrued unbilled revenues, net
Adjustments to reconcile net income to net cash provided from operating activities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Arkansas Fuel Clause Over Recoveries [Member]
Arkansas Fuel Clause Over Recoveries [Member]
Arkansas fuel clause over recoveries.
Entity Listings, Exchange [Axis]
Entity Listings, Exchange [Axis]
Midstream Operations [Member]
Natural Gas Midstream Operations [Member]
Natural Gas Midstream Operations [Member]
Garfield Industrial Authority Bond [Member]
Garfield Industrial Authority Bond [Member]
Garfield Industrial Authority Bond [Member]
Garfield Industrial Authority Bond [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Consolidation Items [Domain]
Entity Small Business
Entity Small Business
Regulated Operations [Abstract]
Regulated Operations [Abstract]
Smart Grid [Member]
Smart Grid [Member]
Smart Grid [Member]
Retained Earnings (Accumulated Deficit), Total
Retained Earnings (Accumulated Deficit)
Retained earnings
Price per share
Sale of Stock, Price Per Share
Postretirement Benefit Costs [Member]
Postretirement Benefit Costs
Stock-Based Compensation
Share-Based Payment Arrangement [Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Loss Contingency, Damages Sought
Damages sought, description
Amendment Flag
Amendment Flag
Taxes, Miscellaneous, Total
Taxes, Miscellaneous
Taxes other than income
Loss Contingencies [Line Items]
OCC Ruling
OCC Ruling [Axis]
OCC Ruling [Axis]
Other comprehensive gain from unconsolidated affiliates, net of tax of $0.0, $0.0, $0.0 and $0.1, respectively
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest, Total
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest
Liabilities and Equity [Abstract]
LIABILITIES AND STOCKHOLDERS' EQUITY
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Allowance for Uncollectible Accounts Receivable
Accounts Receivable [Policy Text Block]
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided from operating activities
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Common Stock [Member]
Common Stock
Component of Accumulated Other Comprehensive Income [Axis]
Component of Accumulated Other Comprehensive Income [Axis]
Component of Accumulated Other Comprehensive Income [Axis]
Public Authority and Street Light
Public Authority [Member]
Public Authority [Member]
Public authorities and street light
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Less: accumulated depreciation
Oklahoma jurisdiction.
Oklahoma jurisdiction [Member]
Oklahoma Jurisdiction
Entity Address, Address Line One
Entity Address, Address Line One
Deferred Income Taxes and Tax Credits, Total
Deferred Income Taxes and Tax Credits
Deferred income taxes and other tax credits, net
[Domain] for Reconciliation of Basis Difference [Axis]
Reconciliation of Basis Difference [Domain]
Reconciliation of Basis Difference [Domain]
Og and E [Member]
OG&E [Member]
Og and E [Member]
OG&E [Member]
SAP S/4 HANA Deferred Expenses [Member]
SAP S4 HANA Deferred Expenses [Member]
SAP S4 HANA deferred expenses.
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]
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]
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 $(0.0) and $(0.1), respectively
Other Assets, Noncurrent [Abstract]
DEFERRED CHARGES AND OTHER ASSETS
NET CHANGE IN CASH AND CASH EQUIVALENTS
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
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, $0.0 and $0.3, respectively
Credit Facility Extended Term
Credit Facility Extended Term
Credit facility extended term.
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Anti-dilutive shares excluded from earnings per share calculation
Credit Facilities and Short-Term Debt
Short-Term Debt [Text Block]
Transmission [Member]
Transmission [Member]
Transmission
Customer Refund Liability, Current
Fuel clause over recoveries
Other comprehensive income, net of tax
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Arkansas Public Service Commission [Member]
Arkansas Public Service Commission [Member]
Arkansas Public Service Commission [Member]
OCC Ruling
OCC Ruling [Domain]
OCC Ruling [Domain]
Accounting Records
Public Utilities, Policy [Policy Text Block]
Retirement Plan Sponsor Location [Domain]
Reconciliation of Equity in Earnings of Unconsolidated Affiliates
[Table Text Block] for Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Table]
Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Table Text Block]
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]
Increase (Decrease) in Deferred Fuel Costs, Total
Increase (Decrease) in Deferred Fuel Costs
Fuel recoveries
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]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Commercial [Member]
Commercial [Member]
Commercial
Current Fiscal Year End Date
Current Fiscal Year End Date
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]
Document Quarterly Report
Document Quarterly Report
Common Equity
Common Equity
Disclosures related to earnings per share and current quarter activities in the automatic dividend reinvestment and stock purchase plan.
Common Equity [Text Block]
Other Cost and Expense, Operating
Other operation and maintenance
Credit Facility [Member]
credit facility
credit facility [Member]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Entity Address, State or Province
Entity Address, State or Province
Term loan available amount
Line of Credit Facility, Remaining Borrowing Capacity
Proceeds from (Repayments of) Short-Term Debt, Total
Proceeds from (Repayments of) Short-Term Debt
Increase in short-term debt
Decrease in short-term debt
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Shares Held in Reserve Related to Dividend Reinvestment Plan and Stock Purchase Plan
Common Stock, Capital Shares Reserved for Future Issuance
Incremental shares
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements
Non-Retail Revenues [Axis]
Non-Retail Revenues [Axis]
Non-Retail Revenues [Axis]
Other comprehensive income regulatory classification of certain pension costsNet of tax
Other Comprehensive Income Regulatory classification of certain pension costsNet Of Tax
Regulatory classification of certain pension costs, net of tax of $1.2 and $0.0, respectively
Regulatory classification of certain pension costs
Regulatory classification of certain pension costs, net of tax of $1.2 and $0.0, respectively
Other comprehensive income (loss), net of tax:
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Performance Units [Member]
Performance Shares [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 Plan [Member]
Long-Term Debt, Fair Value
Long-Term Debt, Fair Value
Subsequent Event [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Amounts reclassified from accumulated other comprehensive income (loss)
OGE Energy Term Loan.
OGE Energy Term Loan [Member]
Other Assets, Noncurrent
Total deferred charges and other assets
Schedule of Pre-tax Compensation Expense and Related Income Tax Benefit
Share-Based Payment Arrangement, Cost by Plan [Table Text Block]
Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Customer [Domain]
Customer [Domain]
Regulatory Depreciation and Amortization, Policy [Policy Text Block]
Legislative Matters
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Changes in Stockholders' Equity
Other Comprehensive Income Amortization Of Defined Benefit Postretirement Plans Deferred Net Gain Recognized In Net Periodic Postretirement Cost Tax Effect
Other comprehensive income amortization of defined benefit postretirement plans deferred net gain recognized in net periodic postretirement cost tax effect.
Amortization of deferred net gain, net of tax of $0.0 and $0.0, respectively
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 $0.0, $0.0 and $0.0, respectively
Amortization of deferred net gain, net of tax of $(0.0) and $(0.1), respectively
Amortization of prior service credit, net of tax ($0.0), ($0.1), ($0.0) and ($0.1)
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.
Other Comprehensive Income (Loss) Amortization Defined Benefit Postretirement Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Tax Effect
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Debt instrument, maturity date
Debt Instrument, Maturity Date
Debt Instrument, Maturity Date
Minimum [Member]
Minimum [Member]
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 Long-Term Investments
Other
[Domain] for Estimated Refund to SPP [Axis]
Estimated Refund to SPP [Domain]
Estimated Refund to SPP [Domain]
OG and E Tinker Debt [Member]
OG and E Tinker Debt [Member]
OG&E Tinker Debt [Member]
Segment Reporting [Abstract]
Segment Reporting [Abstract]
Liabilities, Current [Abstract]
CURRENT LIABILITIES
Regulatory Asset [Axis]
Regulatory Asset [Axis]
Related Party Transactions [Abstract]
Related Party Transactions [Abstract]
Accounts receivable
Accounts Receivable, after Allowance for Credit Loss, Current, Total
Accounts Receivable, after Allowance for Credit Loss, Current
Interest Expense, Operating and Nonoperating [Abstract]
INTEREST EXPENSE
Regulatory Liability, Current
Regulatory Liability, Current
Current Regulatory Liabilities
COMMITMENTS AND CONTINGENCIES (NOTE 12)
Commitments and Contingencies
Defined Benefit Plan, Service Cost
Service cost
Og and E Senior Notes [Member]
Og and E Senior Notes [Member]
OG&E Senior Notes [Member]
Pension Plan [Member]
Pension Plans [Member]
Pension Plans [Member]
Treasury stock, at cost
Treasury Stock, Carrying Basis
Treasury Stock, Carrying Basis
Forecast [Member]
Short-Term Debt, Total
Short-Term Debt
Short-term debt
Depreciation, Amortization and Accretion, Net, Total
Depreciation, Amortization and Accretion, Net
Depreciation and amortization
Equity Securities, FV-NI, Cost
Equity Securities, FV-NI, Cost
Estimated Refund to SPP
Estimated Refund to SPP
Estimated Refund to SPP
Net income
Net income (loss)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net income
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item
Other
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)
Long-Term Debt, Type [Domain]
Weighted Average Number of Shares Outstanding, Basic, Total
Weighted Average Number of Shares Outstanding, Basic
BASIC AVERAGE COMMON SHARES OUTSTANDING
Basic average common shares outstanding
Scenario [Axis]
Scenario [Axis]
Statement, Scenario [Axis]
Increase (Decrease) in Other Current Liabilities
Other current liabilities
Capitalized Portion of Net Periodic Benefit Cost
Capitalized Portion of Net Periodic Benefit Cost
Capitalized portion of net periodic pension benefit cost
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Segments [Axis]
Segments [Axis]
Statement, Business Segments [Axis]
Total long-term debt
Long-Term Debt, Total
Long-Term Debt
Long-term Debt
Related Party Transactions
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Stock-based compensation
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Equity, Attributable to Parent
Total stockholders' equity
Stockholders' Equity Attributable to Parent, Ending Balance
Stockholders' Equity Attributable to Parent, Beginning Balance
Employer expected additional contribution
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Statement of Stockholders' Equity [Abstract]
Statement of Stockholders' Equity [Abstract]
Provision for Rate Refund
Provision for Rate Refund [Member]
Provision for Rate Refund [Member]
Equity Method Investments
Investment in unconsolidated affiliates
Reconciliation of Basis Difference [Table]
Reconciliation of Basis Difference [Table]
Reconciliation of Basis Difference [Table]
Reconciliation of Basis Difference [Axis]
Reconciliation of Basis Difference [Axis]
Reconciliation of Basis Difference [Axis]
ARKANSAS [Member]
ARKANSAS
Series due August 15, 2028 [Member]
Series due August 15, 2028 [Member]
Series due August 15, 2028 [Member]
Treasury Stock [Member]
Treasury Stock
Treasury Stock, Common [Member]
Defined Benefit Plan Disclosure [Line Items]
Over-Allotment Option [Member]
[Line Items] for Reconciliation of Basis Difference [Table]
Reconciliation of Basis Difference [Line Items]
Reconciliation of Basis Difference [Line Items]
Entity Address, Address Line Two
Entity Address, Address Line Two
Fair Value Disclosures [Text Block]
Fair Value Measurements
Environmental Compliance [Axis]
Environmental Compliance [Axis]
Environmental Compliance [Axis]
Settlement Cost [Member]
Settlement Cost [Member]
Settlement Cost [Member]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Regulatory Asset [Domain]
Regulatory Asset [Domain]
Other Assets, Current
Other
Deferred investment tax credits
Accumulated Deferred Investment Tax Credit
Oilfield [Member]
Oilfield [Member]
Oilfield
Plan Name [Domain]
Plan Name [Domain]
Interest Expense, Operating and Nonoperating
Interest expense
Interest expense
Income taxes recoverable from customers, net [Member]
Income taxes recoverable from customers, net [Member]
Income taxes recoverable from customers, net [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]
Credit Facility [Axis]
Series Due May 24, 2025 [Member]
Series Due May 24 2025 [Member]
Series Due May 24 2025.
Cost of Goods and Services Sold, Total
Cost of Product and Service Sold
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE
Fuel, purchased power and direct transmission expense
Schedule of Line of Credit Facilities
Schedule of Line of Credit Facilities [Table Text Block]
Income taxes payable - parent
Increase (Decrease) in Income Taxes Payable
Pension Plan [Member]
Pension Plan [Member]
Vegetation Management Program Deferred Costs [Member]
Vegetation Management Program Deferred Costs [Member]
Vegetation management program deferred costs.
Entity Address, City or Town
Entity Address, City or Town
Number of reporting segments
Number of Reportable Segments
Security Exchange Name
Security Exchange Name
Credit Facility [Domain]
Credit Facility [Domain]
Long-Term Debt, Gross
Long term debt
Property, Plant and Equipment, Gross, Ending Balance
Property, Plant and Equipment, Gross, Beginning Balance
Property, Plant and Equipment, Gross
Total property, plant and equipment
Weighted average interest rate
Debt, Weighted Average Interest Rate
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]
Senior notes due April one two thousand fifty three.
Senior Notes Due April One Two Thousand Fifty Three [Member]
Senior Notes due April 1, 2053 [Member]
Intersegment Eliminations [Member]
Eliminations [Member]
INCOME BEFORE TAXES
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Term Loan [Member]
Term Loan
Term Loan [Member]
Term Loan
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Share based payment award non option equity instruments granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted
Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block]
Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy
Retirement Plan Sponsor Location [Axis]
Benefit obligations regulatory asset [Member]
Benefit Obligations [Member]
Benefit Obligations [Member]
Arkansas 2024 Generation Construction Notice Filing.
Arkansas Two Thousand Twenty Four Generation Construction Notice Filing [Member]
Arkansas 2024 Generation Construction Notice Filing
Outstanding Intercompany Borrowings
Outstanding Intercompany Borrowings
Outstanding Intercompany Borrowings
Inventory, Net
Inventory, Net, Total
Fuel inventories
Income Taxes [Abstract]
Income Taxes [Abstract]
Income Taxes [Abstract]
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Damage from Fire, Explosion or Other Hazard [Member]
Damage from Fire [Member]
Assets, Current
Total current assets
Total compensation expense
Share-Based Payment Arrangement, Expense
Document Period End Date
Document Period End Date
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments and Joint Ventures [Abstract]
Automatic Dividend Reinvestment and Stock Purchase Plan [Member]
Automatic Dividend Reinvestment and Stock Purchase Plan [Member]
Automatic Dividend Reinvestment and Stock Purchase Plan [Member]
Other Assets, Miscellaneous, Noncurrent
Other
Oklahoma Energy Efficiency Rider Under Recovery [Member]
Oklahoma Energy Efficiency Rider Under Recovery
Oklahoma Energy Efficiency Rider Under Recovery [Member]
Long-Term Debt [Text Block]
Long-Term Debt
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) [Member]
Restricted Stock Units (RSUs) [Member]
Loss Contingency Nature [Axis]
Loss Contingency, Nature [Domain]
Residential [Member]
Residential [Member]
Residential
Credit Facility Extended Term Description
Credit Facility Extended Term Description
Credit facility extended term description.
Class of Stock [Axis]
Class of Stock [Axis]
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]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax, Total
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax
Weighted - Average Interest Rate
Short-Term Debt, Weighted Average Interest Rate, at Point in Time
Liabilities
Total liabilities
Customer Impact [Member]
Customer Impact [Member]
Customer Impact [Member]
Capital contribution from OGE Energy
Proceeds from Contributions from Parent
[Domain] for Non-Retail Revenues [Axis]
Non-Retail Revenues [Domain]
Non-Retail Revenues [Domain]
Investment in Equity Securities of Energy Transfer
Equity Method Investments [Policy Text Block]
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Expected return on plan assets
Dividends Payable, Current
Dividends payable
Weighted Average Number of Shares Outstanding, Diluted
DILUTED AVERAGE COMMON SHARES OUTSTANDING
Diluted average common shares outstanding
Securities Act File Number
Entity File Number
Horseshoe Lake.
Horseshoe Lake [Member]
Location [Domain]
Location [Domain]
Payments of Ordinary Dividends, Common Stock
Dividends paid on common stock
OGE Energy [Member]
OGE Energy [Member]
OGE Energy [Member]
Domestic Plan [Member]
Schedule of Regulatory Assets and Liabilities
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 [Table Text Block]
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]
Cover page.
Electrics Company [Member]
Electrics Company [Member]
Electrics Company.
Electric Company [Member]
Taxes Payable, Current, Total
Taxes Payable, Current
Accrued taxes
Scenario [Domain]
Scenario [Domain]
Rate Matters and Regulation [Line Items]
Number of Operating Segments
Number of Operating segments
Additional Pension Expense to Meet State Requirements
Additional Pension Expense to Meet State Requirements
Change in pension/postretirement expense to maintain allowed recoverable amount in Oklahoma jurisdiction (A)
Sale of Stock [Domain]
Segment Reporting Disclosure [Text Block]
Report of Business Segments
Outstanding intercompany borrowing
Outstanding Intercompany Borrowing
Outstanding intercompany borrowing.
Postretirement benefit plans:
Postretirement plans:
-- None. No documentation exists for this element. --
Defined Benefit Postretirement Plans [Abstract]
Derivative Assets (Liabilities), at Fair Value, Net, Total
Derivative Assets (Liabilities), at Fair Value, Net
Derivative fair value
Financial instruments measured at fair value
Entities [Table]
Entities [Table]
Customer deposits
Contract with Customer, Liability, Current
Pension Plan and Restoration of Retirement Income Plan:
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract]
Pension Plan and Restoration of Retirement Income Plan:
In Favor Cooperatives
In Favor Cooperatives
In Favor Cooperatives [Member]
Proceeds from long-term debt
Proceeds from Issuance of Long-Term Debt, Total
Proceeds from Issuance of Long-Term Debt
Proceeds from long-term debt
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Amortization of unrecognized prior service cost
Document Transition Report
Document Transition Report
Operating Expenses
Operating expenses
Conversion of Stock, Amount Issued
Conversion price
Regulated and Unregulated Operation [Domain]
Liability, Defined Benefit Plan, Noncurrent, Total
Liability, Defined Benefit Plan, Noncurrent
Accrued benefit obligations
Statement of Cash Flows [Abstract]
Statement of Cash Flows [Abstract]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax
Amortization of prior service cost, net of tax of $0.1 and $0.1, respectively
Amortization of prior service cost, net of tax of $0.1 and $0.1, respectively
Issuance of common stock
Stock Issued During Period, Value, New Issues
SPP Cost Tracker Rider Under Recovery [Member]
SPP Cost Tracker Rider Under Recovery [Member]
SPP cost tracker under recovery [Member]
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
Net periodic benefit cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Net of Unconsolidated Affiliates
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Net of Unconsolidated Affiliates
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Net of Unconsolidated Affiliates, Total
NET INCOME
Increase (Decrease) in Inventories, Total
Increase (Decrease) in Inventories
Fuel, materials and supplies inventories
System Sales Revenues
Total Retail Customer [Member]
Total Retail Customer [Member]
System sales revenues
Other Nonoperating Income
Other income
Income taxes receivable
Income Taxes Receivable, Current
Line of Credit Facility [Line Items]
Line of Credit Facility [Line Items]
Exchange [Domain]
Exchange [Domain]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity
Allowance for equity funds used during construction
Allowance for equity funds used during construction
Assets [Abstract]
ASSETS
Document Fiscal Year Focus
Document Fiscal Year Focus
Senate Bill Nine Nine Eight Deferred Costs Net [Member]
Senate Bill 998 deferred Ccsts, net.
SB 998 Deferred Costs, Net [Member]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Summary of Accumulated Other Comprehensive Income (Loss)
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
CASH FLOWS FROM INVESTING ACTIVITIES
Accounts Payable, Current, Total
Accounts Payable, Current
Accounts payable
Interest Expense, Long-Term Debt, Total
Interest Expense, Long-Term Debt
Interest on long-term debt
Other Operating Segment [Member]
Other Operations [Member]
Og And E Industrial Authority Bonds [Member]
Og And E Industrial Authority Bonds [Member]
OG&E Industrial Authority Bonds [Member]
Increase (Decrease) in Other Noncurrent Assets
Other assets
Gain on equity securities (Note 1)
Gain on equity securities
Gain on investment in equity securities
Equity Securities, FV-NI, Gain (Loss), Total
Equity Securities, FV-NI, Gain (Loss)
Subsidiary or Equity Method Investee, Sale of Stock [Table]
Unrealized Gain (Loss) on Investments [Table Text Block]
Unrealized Gain (Loss) on Investment
Component of Accumulated Other Comprehensive Income Loss [Domain]
Component of Accumulated Other Comprehensive Income Loss [Domain]
Component of Accumulated Other Comprehensive Income Loss [Domain]
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]
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Line of credit outstanding borrowing amount
Line of Credit Outstanding, Amount
Long-Term Line of Credit
Long-Term Line of Credit, Total
Debt Instrument [Axis]
Debt Instrument [Axis]
Advances from parent
Advances from parent
Advances from parent
Additional distribution assets purchased
Fair Value of Assets Acquired
Defined Benefit Plan, Interest Cost
Interest cost
Share-based Payment Arrangement [Abstract]
Share-Based Payment Arrangement [Abstract]
Sale of Stock [Axis]
Equity Method Investments and Joint Ventures Disclosure [Text Block]
Equity Method Investments and Joint Ventures Disclosure [Text Block]
Revenues
Operating revenues
Operating revenues
Operating revenues
Income taxes receivable
Increase (Decrease) in Income Taxes Receivable
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash used in investing activities
Series Due May 26, 2023
Series Due May 26, 2023 [Member]
Series Due May 26, 2023
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
Public Utilities, Property, Plant and Equipment, Plant in Service, Total
Public Utilities, Property, Plant and Equipment, Plant in Service
In service
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]
Muskogee Industrial Authority Bond Due 2027 [Member]
Muskogee Industrial Authority Bond Due 2027 [Member]
Muskogee Industrial Authority Bond Due 2027 [Member]
Muskogee Industrial Authority Bond Due 2027 [Member]
Other Liabilities, Noncurrent
Other
Interest Expense, Short-Term Borrowings, Total
Interest Expense, Short-Term Borrowings
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]
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Change in certain current assets and liabilities:
[Domain] for Environmental Compliance [Axis]
Environmental Compliance [Domain]
Environmental Compliance [Domain]
Forward Equity Sale Agreements [Member]
Forward Equity Sale Agreements.
Forward equity sale agreements [Member]
Letters of Credit Outstanding, Amount
Letters of Credit Outstanding, Amount
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
Increase in long-term borrowings under revolver
Proceeds from long-term borrowings under revolver
Increase in long-term borrowings under revolver.
Additional Paid-in Capital [Member]
Premium on Common Stock
Measurement Frequency [Domain]
Senior Notes [Member]
Trading Symbol
Trading Symbol
Oge Energy Senior Notes [Member]
Oge Energy Senior Notes [Member]
OGE Energy Senior Notes [Member]
Equity Securities, FV-NI, Current
Equity Securities, FV-NI, Current
Subsequent Event Type [Axis]
Employee-related Liabilities, Current, Total
Employee-related Liabilities, Current
Accrued compensation
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
CASH FLOWS FROM FINANCING ACTIVITIES
Fair Value, Recurring [Member]
Recurring [Member]
Payments for Removal Costs
Cost of removal
Cost of removal
Impact to Company [Member]
Impact to Company [Member]
Impact to Company [Member]
Dry Scrubber Regulatory Asset [Member]
Dry Scrubber Regulatory Asset [Member]
Dry Scrubber Regulatory Asset [Member]
Equity Components [Axis]
Equity Components [Axis]
Statement, Equity Components [Axis]
Net other income
Nonoperating Income (Expense)
Equity Component [Domain]
Equity Component [Domain]
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.
Advances to parent
Advances to parent
Stock-based compensation, Number of Shares
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
Total Shareholder Return [Member]
Total Shareholder Return [Member]
Total Shareholder Return [Member]
Increase (Decrease) in Other Current Assets
Other current assets
IPO [Member]
Customer [Axis]
Customer [Axis]
Debt Instrument Maximum Leverage Ratio
Debt Instrument Maximum Leverage Ratio
Depreciation, Depletion and Amortization, Nonproduction, Total
Depreciation, Depletion and Amortization, Nonproduction
Depreciation and amortization
Statement of Comprehensive Income [Abstract]
Statement of Comprehensive Income [Abstract]
Muskogee Industrial Authority Bond Due 2025 [Member]
Muskogee Industrial Authority Bond Due 2025 [Member]
Muskogee Industrial Authority Bond Due 2025 [Member]
Muskogee Industrial Authority Bond Due 2025 [Member]
Maximum [Member]
Maximum [Member]
Statistical Measurement [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.
Energy Efficiency Rider Over Recoveries [Member]
Settlement Agreement [Member]
Settlement Agreement.
Other Contracts with Customers [Member]
Other Contracts with Customers [Member]
Other
Line of Credit Facility, Expiration Date
Maturity
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]
Balance
Balance
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Total
Equity, Including Portion Attributable to Noncontrolling Interest
Balance
Other Regulatory Liabilities [Member]
Other Regulatory Liabilities [Member]
Other Regulatory Liabilities [Member]
Other (B)
Series Due May 24, 2027 [Member]
Series Due May 24 2027 [Member]
Series Due May 24 2027.
Winter Storm Uri costs [Member]
Winter Storm Uri Costs
Winter Storm Uri Costs [Member]
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 and $0.1, respectively
Interest Payable, Current
Accrued interest
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Revenue Recognition
Revenue from Contract with Customer [Text Block]
Entity Registrant Name
Entity Registrant Name
Entity Voluntary Filers
Entity Voluntary Filers
Other Nonoperating Income (Expense), Total
Other Nonoperating Income (Expense)
Other income (expense)
Other income
Conversion of Stock, Shares Issued
Conversion of shares
Income Tax Expense (Benefit), Total
Income Tax Expense (Benefit)
INCOME TAX EXPENSE
Income tax expense (benefit)
Measurement Frequency [Axis]
Other Investments
Total other property and investments
Payments to Acquire Productive Assets, Total
Payments to Acquire Productive Assets
Capital expenditures (less allowance for equity funds used during construction)
Capital expenditures
Senior Notes due May 15, 2029
Senior Notes Due May Fifteen Twenty Twenty Nine [Member]
Senior notes due may fifteen twenty twenty nine.
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]
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
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), Net of Tax, Total
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated other comprehensive loss, net of tax
Accumulated Other Comprehensive Income (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, Equity Method Investment [Table Text Block]
Consolidation Items [Axis]
Total assets
Assets
TOTAL ASSETS
Senior Notes Due April One Two Thousand Fifty Six [Member]
Senior notes due April 1, 2025.
Senior Notes due April 1, 2056 [Member]
Income Statement [Abstract]
Income Statement [Abstract]
Other Investments [Abstract]
OTHER PROPERTY AND INVESTMENTS
Defined Benefit Plan, Amortization of Gain (Loss)
Amortization of net (gain) loss
Amortization of net loss
Sale of Stock, Number of Shares Issued in Transaction
Number of shares issued
[Table Text Block] for Reconciliation of Basis Difference [Table]
Reconciliation of Basis Difference [Table Text Block]
Reconciliation of Basis Difference [Table Text Block]
Issuance of common stock, Number of Shares
New common stock shares issued
Stock Issued During Period, Shares, New Issues
Earnings Per Share, Diluted, Total
Earnings Per Share, Diluted
DILUTED EARNINGS PER AVERAGE COMMON SHARE
Diluted earnings per average common share
Common Stocks, Including Additional Paid in Capital
Common stockholders' equity
Summary of OGE Energy's Business Segments
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Operating Segments [Member]
Long-Term Purchase Commitment [Table]
Long-term Purchase Commitment [Table]
Deferred Pension Expenses [Member]
Deferred Pension Expenses [Member]
Deferred Pension Expenses [Member]
City Area Code
City Area Code
Long-Term Debt, Unclassified [Abstract]
Long-term Debt, Unclassified [Abstract]
Debt Instrument, Issued, Principal
Aggregate total principal amount
Other Comprehensive Income (Loss), Net of Tax
Other Comprehensive Income (Loss), Net of Tax
Other comprehensive income, net of tax
Other comprehensive income, net of tax
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
Schedule of Defined Benefit Plans Disclosures
Industrial [Member]
Industrial [Member]
Industrial
Line of Credit Facility, Maximum Borrowing Capacity
Line of Credit Facility, Maximum Borrowing Capacity
Aggregate Commitment
Defined Benefit Plan [Table]
Schedule of Defined Benefit Plans Disclosures [Table]
Integrated Market
Integrated Market [Member]
Integrated Market [Member]
Integrated market
Deferred storm expenses [Member]
Deferred storm expenses [Member]
Deferred storm expenses [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax
Amortization of deferred net loss, net of tax of $0.0 and $0.0, respectively
Senior Notes due January 15, 2033 [Member]
Senior notes due January 15, 2033.
Property, Plant and Equipment, Net
Net property, plant and equipment
Regulatory Liability, Noncurrent
Regulatory Liability, Noncurrent
Regulatory liabilities
CASH AND CASH EQUIVALENTS AT END OF PERIOD
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Operating Income (Loss)
Operating income (loss)
OPERATING INCOME
Forward Contract Indexed to Issuer's Equity, Shares
Forward equity sale agreements
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
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss) [Member]
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
Share-Based Payment Arrangement, Noncash Expense, Total
Share-Based Payment Arrangement, Noncash Expense
Stock-based compensation expense
Other Nonoperating Expense
Other expense
Class of Stock [Line Items]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash provided from financing activities
Deferred income taxes
Deferred Income Tax Liabilities, Net
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
Accrued removal obligations [Member]
Accrued removal obligations [Member]
Accrued removal obligations [Member]
Nonoperating Income (Expense) [Abstract]
OTHER INCOME (EXPENSE)
Entity Information [Line Items]
Entity Information [Line Items]
Entity Interactive Data Current
Entity Interactive Data Current
Arkansas Jurisdiction.
Arkansas Jurisdiction [Member]
Arkansas Jurisdiction
Deferred Fuel Cost
Deferred Fuel Cost
Fuel clause under recoveries
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
CASH FLOWS FROM OPERATING ACTIVITIES
Accounting Pronouncements
Accounting Standards Update and Change in Accounting Principle [Text Block]
Entity by Location [Axis]
Entity by Location [Axis]
Unbilled Receivables, Current
Accrued unbilled revenues
Increase (Decrease) in Other Noncurrent Liabilities
Other 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
OKLAHOMA [Member]
OKLAHOMA
Common Stock, Dividends, Per Share, Declared
Common Stock, Dividends, Per Share, Declared
Line of Credit Facility, Current Borrowing Capacity
Line of Credit Facility, Current Borrowing Capacity
Share-Based Payment Arrangement, Expense, Tax Benefit
Income tax benefit
Entity Tax Identification Number
Entity Tax Identification Number
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
STOCKHOLDERS' EQUITY
Long-Term Debt, Type [Axis]
Short-Term Debt [Abstract]
Short-term Debt [Abstract]
Pension and Other Postretirement Benefits Cost (Reversal of Cost), Total
Pension and Other Postretirement Benefits Cost (Reversal of Cost)
Other net periodic benefit expense
Other Inventory, Supplies, Gross
Materials and supplies, at average cost
Summary of Significant Accounting Policies
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
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]
Total net periodic benefit cost
t
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Other Liabilities, Current
Other
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Amortization of deferred net loss, net of tax of $0.0 and $0.0, respectively
Increase (Decrease) in Regulatory Liabilities
Regulatory liabilities
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
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]
Class of Stock [Domain]
Class of Stock [Domain]
Stock, Class of Stock [Table]
Entity Emerging Growth Company
Entity Emerging Growth Company