Stock-Based Compensation - Share-based Compensation, Activity (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted				247,252
Equity Instruments Other than Options, Forfeited in Period		(16,566)
Total Shareholder Return [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted		216,437	249,909	201,552
Total Shareholder Return [Member] | Og and E [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted		60,923	68,720	67,975
Performance Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Beginning Balance		581,252
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted	[1]	216,437
Equity Instruments Other than Options, Converted in Period	[2]	(172,748)
Equity Instruments Other than Options, Vested in Period		(161,690)
Equity Instruments Other than Options, Forfeited in Period		(16,566)
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Ending Balance		608,375	581,252
Awards Other than Options, Fully Vested	[3]	161,690
Equity Instruments Other than Options, Converted, Aggregrate Intrinsic Value		$ 0.0
Equity Instruments Other than Options, Outstanding, Aggregrate Intrinsic Value		34.1
Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested		$ 3.7
Performance Units [Member] | Og and E [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Beginning Balance		161,310
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted	[1]	60,923
Equity Instruments Other than Options, Converted in Period	[2]	(48,195)
Equity Instruments Other than Options, Vested in Period		(44,550)
Equity Instruments Other than Options, Forfeited in Period		(4,217)
Equity Other Than Options, Employee Migration	[4]	802
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Ending Balance		170,623	161,310
Awards Other than Options, Fully Vested	[3]	44,550
Equity Instruments Other than Options, Converted, Aggregrate Intrinsic Value		$ 0.0
Equity Instruments Other than Options, Outstanding, Aggregrate Intrinsic Value		9.6
Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested		$ 1.0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Beginning Balance		133,671
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted		116,539	89,197	67,193
Equity Instruments Other than Options, Vested in Period		(47,995)
Equity Instruments Other than Options, Forfeited in Period		(12,732)
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Ending Balance		189,483	133,671
Equity Instruments Other than Options, Vested, Aggregrate Intrinsic Value		$ 1.9
Equity Instruments Other than Options, Outstanding, Aggregrate Intrinsic Value		$ 7.5
Restricted Stock [Member] | Og and E [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Beginning Balance		35,613
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted		32,804	22,911	22,665
Equity Instruments Other than Options, Vested in Period		(11,807)
Equity Instruments Other than Options, Forfeited in Period		(4,342)
Equity Other Than Options, Employee Migration	[4]	491
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Ending Balance		52,759	35,613
Equity Instruments Other than Options, Vested, Aggregrate Intrinsic Value		$ 0.5
Equity Instruments Other than Options, Outstanding, Aggregrate Intrinsic Value		$ 2.1

[1] For performance units, this represents the target number of performance units granted. Actual number of performance units earned, if any, is dependent upon performance and may range from zero percent to 200 percent of the target.

[2] These amounts represent performance units that were canceled at December 31, 2021 due to the performance metric threshold not being met.

[3] These amounts represent performance units that vested at December 31, 2022. Actual expected amounts to be paid out in 2023 will differ based on the percentage at which the performance metric was met and are dependent upon Compensation Committee approval.

[4] Due to certain employees transferring between OG&E and OGE Energy.