CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net Income	$ 802.2	$ 1,005.7
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAXES
Cash Flow Hedges, Net of Tax	23.1	(6.2)
Amortization of Pension and OPEB Deferred Costs, Net of Tax	0.3	(0.6)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	23.4	(6.8)
TOTAL COMPREHENSIVE INCOME	825.6	998.9
Total Comprehensive Income Attributable To Noncontrolling Interests	2.0	2.6
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS	$ 823.6	$ 996.3