Income Taxes (Additional Information) (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Taxes [Line Items]
Reserve related to state tax position	$ 7,900,000
Unrecognized Tax Benefits	28,600,000	$ 20,700,000	$ 22,400,000	$ 21,900,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	0	0	0
Og and E [Member]
Income Taxes [Line Items]
Unrecognized Tax Benefits	22,600,000	16,400,000	$ 18,100,000
Deferred Tax Asset [Member]
Income Taxes [Line Items]
Unrecognized Tax Benefits	$ 14,700,000
Deferred Tax Asset [Member] | OGE Energy [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Valuation Allowance		$ 2,700,000