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FINANCING ACTIVITIES - Securitized Accounts Receivables Narrative (Details) $ in Millions | Sep. 30, 2025 USD ($)
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Debt Disclosure [Abstract] |
Total commitment from bank conduits to finance receivables | $ 900

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- Definition Total commitment from bank conduits to finance receivables. + References No definition available. + Details
Name: | aep_TotalCommitmentFromBankConduitsToFinanceReceivables
Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration