CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
REVENUES
TOTAL REVENUES	$ 6,020	$ 5,463
EXPENSES
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation	2,118	1,853
Other Operation	750	752
Maintenance	411	319
Asset Impairments and Other Related Charges	31	0
Depreciation and Amortization	907	833
Taxes Other Than Income Taxes	443	422
TOTAL EXPENSES	4,660	4,179
OPERATING INCOME	1,360	1,284
Other Income (Expense):
Other Income	6	8
Allowance for Equity Funds Used During Construction	70	57
Non-Service Cost Components of Net Periodic Benefit Cost	38	35
Interest Expense	(552)	(495)
INCOME (LOSS) BEFORE INCOME TAX EXPENSE (BENEFIT)	922	889
Income Tax Expense	44	125
Equity Earnings of Unconsolidated Subsidiaries	25	38
NET INCOME	903	802
Net Income Attributable to Noncontrolling Interests	29	2
EARNINGS ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS, Basic	874	800
EARNINGS ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS, Diluted	$ 874	$ 800
WEIGHTED AVERAGE NUMBER OF BASIC AEP COMMON SHARES OUTSTANDING (in shares)	542,079,269	533,391,487
TOTAL BASIC EARNINGS PER SHARE ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS (in dollars per share)	$ 1.61	$ 1.50
WEIGHTED AVERAGE NUMBER OF DILUTED AEP COMMON SHARES OUTSTANDING (in shares)	547,054,104	534,663,493
TOTAL DILUTED EARNINGS PER SHARE ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS (in dollars per share)	$ 1.60	$ 1.50
Vertically Integrated Utilities
REVENUES
TOTAL REVENUES	$ 3,365	$ 3,086
Transmission and Distribution Utilities
REVENUES
TOTAL REVENUES	1,594	1,515
Generation & Marketing
REVENUES
TOTAL REVENUES	931	730
Other Revenues
REVENUES
TOTAL REVENUES	$ 130	$ 132