Credit Facilities and Short-Term Debt - Schedule of Line of Credit Facilities (Parenthetical) (Details)	6 Months Ended
	Jun. 30, 2024 USD ($)
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,160,000,000
Outstanding Intercompany Borrowings	116,900,000
Line of credit outstanding borrowing amount	561,700,000	[1]
Og and E [Member]
Line of Credit Facility [Line Items]
Intercompany Borrowing Agreement - Maximum Borrowing Capacity	450,000,000
Line of Credit Facility, Current Borrowing Capacity	$ 550,000,000	[2],[3]
Credit facility termination date	Dec. 18, 2028	[2],[3]
Og and E [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit outstanding borrowing amount	$ 200,000,000
Weighted average interest rate	6.42%
OGE Energy [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 550,000,000	[4]
Line of credit outstanding borrowing amount	$ 361,300,000	[1],[4]
Credit facility termination date	Dec. 18, 2028	[4]
OGE Energy [Member] | Series Due May 24, 2027 [Member]
Line of Credit Facility [Line Items]
Long term debt	$ 120,000,000
OGE Energy [Member] | Series due August 15, 2028 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 155,000,000
Debt Instrument Maximum Leverage Ratio	0.7
OGE Energy [Member] | Credit Facility [Member] | Series Due May 24, 2027 [Member]
Line of Credit Facility [Line Items]
Long term debt	$ 60,000,000
OGE Energy [Member] | Term Loan [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity	60,000,000	[5]
Line of credit outstanding borrowing amount	$ 0	[1],[5]
Credit facility termination date	May 24, 2027	[5]
OGE Energy [Member] | Term Loan [Member] | Series Due May 24, 2027 [Member]
Line of Credit Facility [Line Items]
Long term debt	$ 60,000,000

[1] Includes direct borrowings under the revolving credit agreements, commercial paper borrowings and letters of credit at June 30, 2024.

[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 June 30, 2024, there was $116.9 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. At June 30, 2024, there was $200.0 million in outstanding borrowings at a weighted-average interest rate of 6.42 percent under the revolving credit facility, which was classified as Long-Term Debt in the Registrants' condensed balance sheet.

[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 $120.0 million floating rate unsecured three-year credit agreement, of which $60.0 million is considered a revolving loan, which is included in the table above, and $60.0 million is considered a term loan. The credit agreement, under certain circumstances, may be increased to a maximum commitment limit of $155.0 million and includes a maximum leverage ratio of 0.70 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.