Short-Term Debt and Credit Facilities - Schedule of Line of Credit Facilities (Details) - USD ($)		1 Months Ended	12 Months Ended
		May 31, 2022	Dec. 31, 2022		Dec. 31, 2021
Line of Credit Facility [Line Items]
Aggregate Commitment			$ 1,150,000,000.0
Line of Credit Outstanding, Amount	[1]		$ 400,000
Weighted - Average Interest Rate	[2]		1.15%
OGE Energy [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity		$ 550,000,000.0	$ 550,000,000.0	[3]
Line of Credit Outstanding, Amount	[1],[3]		$ 0
Weighted - Average Interest Rate	[2],[3]		0.00%
Maturity	[3],[4]		Dec. 17, 2027
OGE Energy [Member] | Term Loan [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity	[5]		$ 50,000,000.0
Line of Credit Outstanding, Amount	[1],[5]		$ 0
Weighted - Average Interest Rate	[2],[5]		0.00%
Maturity		May 24, 2025	May 24, 2025	[5]
OG&E [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity	[6],[7]		$ 550,000,000.0
Aggregate Commitment					$ 1,100,000,000
Letters of Credit Outstanding, Amount	[1],[6],[7]		$ 400,000
Weighted - Average Interest Rate	[2],[6],[7]		1.15%
Maturity	[4],[6],[7]		Dec. 17, 2027

[1] Includes direct borrowings under the revolving credit agreements, commercial paper borrowings and letters of credit at December 31, 2022

[2] Represents the weighted-average interest rate for the outstanding borrowings under the revolving credit agreements, commercial paper borrowings and letters of credit.

[3] 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.

[4] In December 2021, the Registrants entered into unsecured five-year revolving credit agreements totaling $1.1 billion. Each of the revolving credit facilities contained an option, which could be exercised up to two times, to extend the term of the respective facility for an additional year. In December 2022, the Registrants each entered into an amendment to their credit facility that extends the term of each credit facility for one year, until December 2027. Further, each credit facility amendment gives each of the Registrants the option of extending such commitments for up to two additional one-year periods.

[5] See Note 9 for further information about this revolving credit facility.

[6] 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 17, 2027. At December 31, 2022, there were $84.1 million in intercompany borrowings under this agreement.

[7] 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.