Short-Term Debt and Credit Facilities - Schedule of Line of Credit Facilities (Parenthetical) (Details)		12 Months Ended
		Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Line of Credit Facility [Line Items]
Outstanding Intercompany Borrowings		$ 85,100,000
Line of Credit Facility, Maximum Borrowing Capacity		1,150,000,000
Og and E [Member]
Line of Credit Facility [Line Items]
Intercompany Borrowing Agreement - Maximum Borrowing Capacity		$ 450,000,000
Credit facility termination date	[1],[2],[3]	Dec. 18, 2028
Line of Credit Facility, Current Borrowing Capacity	[2],[3]	$ 550,000,000
Advances from parent		$ 147,700,000	$ 0
OGE Energy [Member]
Line of Credit Facility [Line Items]
Credit facility termination date	[1],[4]	Dec. 18, 2028
Line of Credit Facility, Current Borrowing Capacity	[4]	$ 550,000,000
OGE Energy [Member] | Series Due May 24, 2025 [Member]
Line of Credit Facility [Line Items]
Long term debt		100,000,000
OGE Energy [Member] | Series due August 15, 2028 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 135,000,000
Debt Instrument Maximum Leverage Ratio		0.65
Credit Facility [Member] | OGE Energy [Member] | Series Due May 24, 2025 [Member]
Line of Credit Facility [Line Items]
Long term debt		$ 50,000,000
Term Loan [Member] | OGE Energy [Member]
Line of Credit Facility [Line Items]
Credit facility termination date	[5]	May 24, 2025
Line of Credit Facility, Current Borrowing Capacity	[5]	$ 50,000,000
Term Loan [Member] | OGE Energy [Member] | Series Due May 24, 2025 [Member]
Line of Credit Facility [Line Items]
Long term debt		$ 50,000,000

[1] In December 2022, the Registrants entered into an amendment to their credit facility that gave each of the Registrants the option of extending such commitments for up to two additional one-year periods. On December 18, 2023, the Registrants utilized the first extension option for an additional one-year period extending the term until December 2028.

[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, 2028. At December 31, 2023, there was $85.1 million in 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.

[4] 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.

[5] OGE Energy has a $100.0 million floating rate unsecured three-year credit agreement, of which $50.0 million is considered a revolving loan and $50.0 million is considered a term loan. The credit agreement, under certain circumstances, may be increased to a maximum commitment limit of $135.0 million and includes a maximum leverage ratio of 0.65 to 1.0. The other covenants under this credit agreement are substantially the same as OGE Energy's existing $550.0 million revolving credit agreement.