CONSOLIDATED BALANCE SHEETS - I&M (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Long-term Debt Due Within One Year – Nonaffiliated	$ 3,194	$ 3,335
Common Stock – Shares Authorized (in shares)	600,000,000	600,000,000
INDIANA MICHIGAN POWER COMPANY
Long-term Debt Due Within One Year – Nonaffiliated	$ 117	$ 269
Common Stock – Shares Authorized (in shares)	2,500,000	2,500,000
Common Stock – Shares Outstanding (in shares)	1,400,000	1,400,000
INDIANA MICHIGAN POWER COMPANY | DCC Fuel
Long-term Debt Due Within One Year – Nonaffiliated	$ 117	$ 79