CONSOLIDATED STATEMENTS OF INCOME - I&M - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
REVENUES
TOTAL REVENUES	$ 21,876	$ 19,721	$ 18,982
EXPENSES
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation	7,031	5,936	6,578
Other Operation	2,950	3,127	2,811
Maintenance	1,499	1,325	1,276
Asset Impairments and Other Related Charges	66	143	86
Depreciation and Amortization	3,380	3,290	3,090
Taxes Other Than Income Taxes	1,631	1,596	1,492
TOTAL EXPENSES	16,557	15,417	15,426
OPERATING INCOME	5,319	4,304	3,556
Other Income (Expense):
Other Income	48	65	64
Non-Service Cost Components of Net Periodic Benefit Cost	138	126	221
Interest Expense	(2,026)	(1,863)	(1,807)
INCOME BEFORE INCOME TAX EXPENSE (BENEFIT) AND EQUITY EARNINGS	3,724	2,843	2,209
Income Tax Expense	129	(39)	55
Nonrelated Party
REVENUES
TOTAL REVENUES	21,876	19,721	18,982
INDIANA MICHIGAN POWER COMPANY
REVENUES
TOTAL REVENUES	3,031	2,572	2,536
EXPENSES
Other Operation	731	729	663
Maintenance	291	235	239
Asset Impairments and Other Related Charges	7	13	0
Depreciation and Amortization	514	481	470
Taxes Other Than Income Taxes	92	89	84
TOTAL EXPENSES	2,506	2,173	2,048
OPERATING INCOME	525	399	488
Other Income (Expense):
Other Income	21	13	13
Non-Service Cost Components of Net Periodic Benefit Cost	20	18	31
Interest Expense	(151)	(134)	(137)
INCOME BEFORE INCOME TAX EXPENSE (BENEFIT) AND EQUITY EARNINGS	415	296	395
Income Tax Expense	1	(95)	59
NET INCOME	414	391	336
INDIANA MICHIGAN POWER COMPANY | Affiliated Entity
EXPENSES
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation	270	209	181
INDIANA MICHIGAN POWER COMPANY | Nonrelated Party
EXPENSES
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation	601	417	411
Electric Generation, Transmission and Distribution Revenues | INDIANA MICHIGAN POWER COMPANY
REVENUES
TOTAL REVENUES	3,096	2,552	2,469
Sales to AEP Affiliates | INDIANA MICHIGAN POWER COMPANY
REVENUES
TOTAL REVENUES	14	15	9
(Provision For) Reversal Of Refund | INDIANA MICHIGAN POWER COMPANY | Affiliated Entity
REVENUES
TOTAL REVENUES	(3)	(14)	(11)
(Provision For) Reversal Of Refund | INDIANA MICHIGAN POWER COMPANY | Nonrelated Party
REVENUES
TOTAL REVENUES	(142)	(57)	(3)
Other Revenues
REVENUES
TOTAL REVENUES	526	482	458
Other Revenues | INDIANA MICHIGAN POWER COMPANY | Affiliated Entity
REVENUES
TOTAL REVENUES	58	65	59
Other Revenues | INDIANA MICHIGAN POWER COMPANY | Nonrelated Party
REVENUES
TOTAL REVENUES	$ 8	$ 11	$ 13