CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - I&M - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAXES
Cash Flow Hedges, Net of Tax	$ (15.4)	$ (46.3)	$ (25.5)	$ (30.1)
Amortization of Pension and OPEB Deferred Costs, Net of Tax	0.2	(0.6)	0.8	(1.3)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(15.2)	(46.9)	(24.7)	(31.4)
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS	956.8	912.7	2,973.3	2,271.6
I&M
Net Income	149.7	179.1	331.3	359.3
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAXES
Cash Flow Hedges, Net of Tax	0.2	0.1	0.4	0.3
Amortization of Pension and OPEB Deferred Costs, Net of Tax	0.0	0.0	0.1	(0.1)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	0.2	0.1	0.5	0.2
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS	$ 149.9	$ 179.2	$ 331.8	$ 359.5