CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2026	Jun. 30, 2026	Mar. 31, 2026	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2026	Sep. 30, 2025
Statement of Comprehensive Income [Abstract]
Net Income	$ 1,218	$ 747	$ 903	$ 1,000	$ 1,289	$ 802	$ 2,868	$ 3,091
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAXES
Cash Flow Hedges, Net of Tax	5			(16)			12	(26)
Amortization of Pension and OPEB Deferred Costs, Net of Tax	1			0			3	1
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	6	$ 23	$ (14)	(16)	$ (33)	$ 24	15	(25)
TOTAL COMPREHENSIVE INCOME	1,224			984			2,883	3,066
Total Comprehensive Income Attributable To Noncontrolling Interests	31			28			94	93
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS	$ 1,193			$ 956			$ 2,789	$ 2,973

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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