CONSOLIDATED STATEMENTS OF INCOME - PSO - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
REVENUES
TOTAL REVENUES	$ 19,721.3	$ 18,982.3	$ 19,639.5
EXPENSES
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation	5,936.3	6,578.3	7,097.9
Other Operation	3,127.6	2,810.5	2,878.1
Maintenance	1,325.1	1,276.3	1,249.4
Depreciation and Amortization	3,289.9	3,090.4	3,202.8
Taxes Other Than Income Taxes	1,596.3	1,492.3	1,469.8
TOTAL EXPENSES	15,417.7	15,426.1	16,156.8
OPERATING INCOME	4,303.6	3,556.2	3,482.7
Other Income (Expense):
Allowance for Equity Funds Used During Construction	211.0	174.9	133.7
Non-Service Cost Components of Net Periodic Benefit Cost	126.0	221.1	188.5
Interest Expense	(1,862.8)	(1,806.9)	(1,396.1)
INCOME BEFORE INCOME TAX EXPENSE (BENEFIT) AND EQUITY EARNINGS (LOSS)	2,842.9	2,208.7	2,420.4
Income Tax Expense (Benefit)	(39.2)	54.6	5.4
PUBLIC SERVICE COMPANY OF OKLAHOMA
REVENUES
TOTAL REVENUES	1,846.4	1,977.0	1,874.7
EXPENSES
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation	742.5	955.3	891.5
Other Operation	416.8	355.8	400.4
Maintenance	113.0	112.0	114.4
Depreciation and Amortization	272.2	255.5	230.1
Taxes Other Than Income Taxes	77.3	64.1	57.5
TOTAL EXPENSES	1,621.8	1,742.7	1,693.9
OPERATING INCOME	224.6	234.3	180.8
Other Income (Expense):
Interest Income	1.8	1.8	7.4
Allowance for Equity Funds Used During Construction	7.4	8.4	1.5
Non-Service Cost Components of Net Periodic Benefit Cost	11.2	14.3	12.5
Interest Expense	(95.3)	(103.6)	(83.8)
INCOME BEFORE INCOME TAX EXPENSE (BENEFIT) AND EQUITY EARNINGS (LOSS)	149.7	155.2	118.4
Income Tax Expense (Benefit)	(99.6)	(53.6)	(49.2)
NET INCOME	249.3	208.8	167.6
Electric Generation, Transmission and Distribution Revenues | PUBLIC SERVICE COMPANY OF OKLAHOMA
REVENUES
TOTAL REVENUES	1,820.0	1,968.4	1,865.6
Sales to AEP Affiliates | PUBLIC SERVICE COMPANY OF OKLAHOMA | Affiliated Entity
REVENUES
TOTAL REVENUES	6.9	1.2	2.9
Other Revenues
REVENUES
TOTAL REVENUES	483.0	458.1	408.2
Other Revenues | PUBLIC SERVICE COMPANY OF OKLAHOMA
REVENUES
TOTAL REVENUES	$ 19.5	$ 7.4	$ 6.2