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Document and Entity Information Document - USD ($)
 12 Months Ended
Dec. 31, 2024
Jan. 31, 2025
Jun. 28, 2024
Entity Information [Line Items]      
Entity Registrant Name OGE ENERGY CORP.    
Entity Central Index Key 0001021635    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Period End Date Dec. 31, 2024    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Shell Company false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Incorporation, State or Country Code OK    
Entity Tax Identification Number 73-1481638    
Entity Address, Address Line One 321 North Harvey    
Entity Address, Address Line Two P.O. Box 321    
Trading Symbol OGE    
Security Exchange Name NYSE    
Entity Interactive Data Current Yes    
City Area Code 405    
Local Phone Number 553-3000    
Entity Address, State or Province OK    
Entity Address, Postal Zip Code 73101-0321    
Entity File Number 1-12579    
Title of 12(b) Security Common Stock    
Entity Address, City or Town Oklahoma City    
Share Price     $ 35.7
Document Transition Report false    
Document Annual Report true    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Document Type 10-K    
Entity Common Stock, Shares Outstanding   201,148,883 200,867,263
Entity Public Float     $ 7,170,961,289
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

The Proxy Statement for OGE Energy Corp.'s 2025 annual meeting of shareowners is incorporated by reference into Part III of this Form 10-K.

This combined Form 10-K represents separate filings by OGE Energy Corp. and Oklahoma Gas and Electric Company. Information contained herein related to an individual registrant is filed by such registrant on its own behalf. Oklahoma Gas and Electric Company makes no representations as to the information relating to OGE Energy Corp.'s other operations.

Oklahoma Gas and Electric Company meets the conditions set forth in General Instruction I(1)(a) and (b) of Form 10-K and is therefore filing this form with the reduced disclosure format permitted by General Instruction I(2).

    
Auditor Name Ernst & Young LLP    
Auditor Firm ID 42    
Auditor Location Oklahoma City, Oklahoma    
Auditor Opinion [Text Block]

Opinion on the Financial Statements

 

We have audited the accompanying balance sheets and statements of capitalization of Oklahoma Gas and Electric Company (the Company) as of December 31, 2024 and 2023, the related statements of income and comprehensive income, changes in stockholder's equity and cash flows for each of the three years in the period ended December 31, 2024, and the related notes and financial statement schedule listed in the Index at Item 15(a) (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2024, in conformity with U.S. generally accepted accounting principles.

 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework), and our report dated February 18, 2025, expressed an unqualified opinion thereon.

   
OG&E [Member]      
Entity Information [Line Items]      
Entity Registrant Name OKLAHOMA GAS AND ELECTRIC COMPANY    
Entity Central Index Key 0000074145    
Entity Filer Category Non-accelerated Filer    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Shell Company false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Tax Identification Number 73-0382390    
Entity Interactive Data Current Yes    
Entity File Number 1-1097    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Common Stock, Shares Outstanding   40,378,745  
Auditor Name Ernst & Young LLP    
Auditor Firm ID 42    
Auditor Location Oklahoma City, Oklahoma