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Document and Entity Information Document - USD ($)
 12 Months Ended
Dec. 31, 2022
Jan. 31, 2023
Jun. 30, 2022
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, 2022    
Document Fiscal Year Focus 2022    
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     $ 38.56
Document Transition Report false    
Document Annual Report true    
ICFR Auditor Attestation Flag true    
Document Type 10-K    
Entity Common Stock, Shares Outstanding   200,229,215 200,202,672
Entity Public Float     $ 7,719,815,032
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

The Proxy Statement for OGE Energy Corp.'s 2023 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    
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    
Entity Common Stock, Shares Outstanding   40,378,745  
Auditor Name Ernst & Young LLP    
Auditor Firm ID 42    
Auditor Location Oklahoma City, Oklahoma    
Enable Midstream [Member]      
Entity Information [Line Items]      
Auditor Name Deloitte & Touche LLP    
Auditor Firm ID 34    
Auditor Location Oklahoma City, Oklahoma