CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
REVENUES
TOTAL REVENUES	$ 6,010.4	$ 5,420.1	$ 16,560.7	$ 15,025.0
EXPENSES
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation	1,980.2	1,659.2	5,374.5	4,603.5
Other Operation	797.8	805.8	2,087.8	2,385.4
Maintenance	405.1	343.7	1,114.3	1,012.7
Asset Impairments and Other Related Charges	0.0	0.0	0.0	142.5
Depreciation and Amortization	879.6	852.7	2,566.1	2,461.7
Taxes Other Than Income Taxes	426.3	407.2	1,213.3	1,211.2
TOTAL EXPENSES	4,489.0	4,068.6	12,356.0	11,817.0
OPERATING INCOME	1,521.4	1,351.5	4,204.7	3,208.0
Other Income (Expense):
Other Income	12.1	28.5	35.4	55.2
Allowance for Equity Funds Used During Construction	58.5	54.2	172.9	153.0
Non-Service Cost Components of Net Periodic Benefit Cost	34.4	46.5	104.1	129.0
Interest Expense	(508.5)	(498.8)	(1,492.9)	(1,400.0)
INCOME (LOSS) BEFORE INCOME TAX EXPENSE (BENEFIT)	1,117.9	981.9	3,024.2	2,145.2
Income Tax Expense (Benefit)	138.7	37.5	13.3	(97.7)
Equity Earnings of Unconsolidated Subsidiaries	21.1	17.3	79.9	67.0
NET INCOME	1,000.3	961.7	3,090.8	2,309.9
Net Income Attributable to Noncontrolling Interests	28.3	2.1	92.8	6.9
EARNINGS (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS, Basic	972.0	959.6	2,998.0	2,303.0
EARNINGS (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS, Diluted	$ 972.0	$ 959.6	$ 2,998.0	$ 2,303.0
WEIGHTED AVERAGE NUMBER OF BASIC AEP COMMON SHARES OUTSTANDING (in shares)	534,867,357	532,208,876	534,186,206	529,230,818
TOTAL BASIC EARNINGS PER SHARE ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS (in dollars per share)	$ 1.82	$ 1.80	$ 5.61	$ 4.35
WEIGHTED AVERAGE NUMBER OF DILUTED AEP COMMON SHARES OUTSTANDING (in shares)	537,988,799	533,600,842	536,364,715	530,456,985
TOTAL DILUTED EARNINGS PER SHARE ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS (in dollars per share)	$ 1.81	$ 1.80	$ 5.59	$ 4.34
Vertically Integrated Utilities
REVENUES
TOTAL REVENUES	$ 3,511.2	$ 3,248.8	$ 9,531.2	$ 8,722.0
Transmission and Distribution Utilities
REVENUES
TOTAL REVENUES	1,680.2	1,568.5	4,638.3	4,480.5
Generation & Marketing
REVENUES
TOTAL REVENUES	693.8	483.7	1,975.4	1,442.1
Other Revenues
REVENUES
TOTAL REVENUES	$ 125.2	$ 119.1	$ 415.8	$ 380.4