CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Revenues from contracts with customers	$ 736.7	$ 741.1
Other revenues	15.9	6.6
Operating revenues	752.6	747.7
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE	336.7	324.0
OPERATING EXPENSES
Other operation and maintenance	136.5	121.8
Depreciation and amortization	136.4	137.4
Taxes other than income	29.9	31.2
Operating expenses	302.8	290.4
OPERATING INCOME	113.1	133.3
OTHER INCOME (EXPENSE)
Allowance for equity funds used during construction	7.5	7.0
Other net periodic benefit expense	(2.6)	(2.6)
Other income	13.6	7.0
Other expense	(12.3)	(4.5)
Net other income	6.2	6.9
INTEREST EXPENSE
Interest on long-term debt	66.3	61.4
Allowance for borrowed funds used during construction	(3.6)	(4.5)
Interest on short-term debt and other interest charges	(2.8)	10.4
Interest expense	59.9	67.3
INCOME BEFORE TAXES	59.4	72.9
INCOME TAX EXPENSE	9.2	10.2
NET INCOME	$ 50.2	$ 62.7
BASIC AVERAGE COMMON SHARES OUTSTANDING	206.3	201.2
DILUTED AVERAGE COMMON SHARES OUTSTANDING	207.2	201.9
BASIC EARNINGS PER AVERAGE COMMON SHARE	$ 0.24	$ 0.31
DILUTED EARNINGS PER AVERAGE COMMON SHARE	$ 0.24	$ 0.31
Other comprehensive income, net of tax	$ 0.0	$ 0.1
Comprehensive income	50.2	62.8
OG&E [Member]
Revenues from contracts with customers	736.7	741.1
Other revenues	15.9	6.6
Operating revenues	752.6	747.7
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE	336.7	324.0
OPERATING EXPENSES
Other operation and maintenance	136.8	121.8
Depreciation and amortization	136.4	137.4
Taxes other than income	29.9	31.2
Operating expenses	303.1	290.4
OPERATING INCOME	112.8	133.3
OTHER INCOME (EXPENSE)
Allowance for equity funds used during construction	7.5	7.0
Other net periodic benefit expense	(2.5)	(2.5)
Other income	2.7	5.3
Other expense	(0.8)	(0.9)
Net other income	6.9	8.9
INTEREST EXPENSE
Interest on long-term debt	60.6	55.6
Allowance for borrowed funds used during construction	(3.6)	(4.5)
Interest on short-term debt and other interest charges	(7.0)	5.7
Interest expense	50.0	56.8
INCOME BEFORE TAXES	69.7	85.4
INCOME TAX EXPENSE	11.8	14.4
NET INCOME	57.9	71.0
Other comprehensive income, net of tax	0.0	0.0
Comprehensive income	$ 57.9	$ 71.0