Rate Matters and Regulation - Additional Information (Details)									12 Months Ended
	Jan. 30, 2024 USD ($)	Dec. 29, 2023 USD ($)	Dec. 28, 2023 USD ($)	Nov. 21, 2023 USD ($)	Oct. 02, 2023 USD ($)	Jul. 12, 2023 USD ($) Turbine Megawattsday	May 31, 2023 USD ($) Megawattsday Turbine	Feb. 01, 2023 USD ($)	Dec. 31, 2023 USD ($)	Nov. 01, 2023 USD ($)	Dec. 31, 2022 USD ($)
Estimated Refund to SPP									$ 13,000,000
Regulatory assets									577,600,000		$ 524,300,000
Requested Recovery of Capital Investment									1,300,000,000
Settlement Agreement [Member]
Approximate deduction in average monthly residential bill expected										$ 21
Impact to Company [Member]
Estimated Refund to SPP									5,000,000
Customer Impact [Member]
Estimated Refund to SPP									$ 8,000,000
Oklahoma Corporation Commission [Member]
OG&E's Jurisdictional Revenues									86.00%
Arkansas Public Service Commission [Member]
OG&E's Jurisdictional Revenues									8.00%
Increase (decrease) in revenue requirement rose amount	$ 3,500,000		$ 3,500,000
Federal Energy Regulatory Commission [Member]
OG&E's Jurisdictional Revenues									6.00%
OKLAHOMA
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 332,500,000
Public Utilities, Requested Return on Equity, Percentage		10.50%
Common Equity Percentage which ROE is based		53.50%
ARKANSAS
Public Utilities, Approved Rate Increase (Decrease), Amount					$ 4,700,000			$ 9,600,000
Horseshoe Lake [Member]
Number of hydrogen capable combustion turbines | Turbine						2	2
Current energy generation capacity | Megawattsday						448	448
Approximate construction cost of turbines excluding financing costs and property taxes						$ 331,000,000	$ 331,000,000
Recovery of jurisdictional portion of expenses plus financing costs and property taxes				$ 275,000,000
Winter Storm Uri Costs [Member] | ARKANSAS
Regulatory assets									$ 71,000,000		$ 78,200,000