CONSOLIDATED STATEMENTS OF INCOME - SWEPCo - 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
Asset Impairments and Other Related Charges	142.5	85.6	48.8
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
Equity Earnings (Loss) of Unconsolidated Subsidiaries	93.7	58.5	(109.4)
NET INCOME	2,975.8	2,212.6	2,305.6
Net Income (Loss) Attributable to Noncontrolling Interests	8.7	4.5	(1.6)
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS, Basic	2,967.1	2,208.1	2,307.2
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS, Diluted	2,967.1	2,208.1	2,307.2
SOUTHWESTERN ELECTRIC POWER COMPANY
REVENUES
TOTAL REVENUES	2,036.3	2,182.8	2,284.4
EXPENSES
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation	733.3	807.1	889.5
Other Operation	422.4	360.5	424.7
Maintenance	149.1	159.4	148.6
Asset Impairments and Other Related Charges	0.0	85.6	0.0
Depreciation and Amortization	389.3	342.8	324.8
Taxes Other Than Income Taxes	124.9	135.1	126.8
TOTAL EXPENSES	1,819.0	1,890.5	1,914.4
OPERATING INCOME	217.3	292.3	370.0
Other Income (Expense):
Interest Income	14.2	18.9	17.7
Allowance for Equity Funds Used During Construction	13.5	11.5	4.9
Non-Service Cost Components of Net Periodic Benefit Cost	0.8	13.6	12.5
Interest Expense	(105.5)	(147.2)	(137.4)
INCOME BEFORE INCOME TAX EXPENSE (BENEFIT) AND EQUITY EARNINGS (LOSS)	140.3	189.1	267.7
Income Tax Expense (Benefit)	(184.0)	(33.3)	(25.2)
Equity Earnings (Loss) of Unconsolidated Subsidiaries	1.4	1.4	1.4
NET INCOME	325.7	223.8	294.3
Net Income (Loss) Attributable to Noncontrolling Interests	4.5	3.5	4.2
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS, Basic	321.2	220.3	290.1
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS, Diluted	321.2	220.3	290.1
Electric Generation, Transmission and Distribution Revenues | SOUTHWESTERN ELECTRIC POWER COMPANY
REVENUES
TOTAL REVENUES	2,148.6	2,154.7	2,234.9
Sales to AEP Affiliates | SOUTHWESTERN ELECTRIC POWER COMPANY | Affiliated Entity
REVENUES
TOTAL REVENUES	71.4	81.6	59.5
Provision for Refund | SOUTHWESTERN ELECTRIC POWER COMPANY | Affiliated Entity
REVENUES
TOTAL REVENUES	(9.3)	(34.8)	(5.6)
Provision for Refund | SOUTHWESTERN ELECTRIC POWER COMPANY | Nonrelated Party
REVENUES
TOTAL REVENUES	(181.9)	(21.1)	(6.3)
Other Revenues
REVENUES
TOTAL REVENUES	483.0	458.1	408.2
Other Revenues | SOUTHWESTERN ELECTRIC POWER COMPANY
REVENUES
TOTAL REVENUES	$ 7.5	$ 2.4	$ 1.9