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Credit Facilities and Short-Term Debt - Additional Information (Details) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Line of Credit Facility [Line Items]    
Short-term debt $ 469,300,000 $ 499,200,000
Acceleration of Indebtedness of Credit Facility 100,000,000  
Nonpayment of Uninsured Judgments 100,000,000  
Outstanding Intercompany Borrowings 200,000  
OGE Energy [Member]    
Line of Credit Facility [Line Items]    
Line of Credit Facility, Current Borrowing Capacity [1] $ 550,000,000  
OGE Energy [Member] | Maximum [Member]    
Line of Credit Facility [Line Items]    
Ratio of Consolidated Debt to Consolidated Capitalization 70.00%  
OG&E [Member]    
Line of Credit Facility [Line Items]    
Line of Credit Facility, Current Borrowing Capacity [2],[3] $ 550,000,000  
Short Term Borrowing Capacity That Has Regulatory Approval $ 1,000,000,000  
Ratio of Consolidated Debt to Consolidated Capitalization 65.00%  
[1] This bank facility is available to back up OGE Energy's commercial paper borrowings and to provide revolving credit borrowings. This bank facility can also be used as a letter of credit facility.
[2] OG&E has an intercompany borrowing agreement with OGE Energy whereby OG&E has access to up to $450.0 million of OGE Energy's revolving credit amount. This agreement has a termination date of December 18, 2029. At December 31, 2024, there was $0.2 million intercompany borrowings under this agreement.
[3] This bank facility is available to back up OG&E's commercial paper borrowings and to provide revolving credit borrowings. This bank facility can also be used as a letter of credit facility.