XML 283 R212.htm IDEA: XBRL DOCUMENT
v3.25.0.1

FINANCING ACTIVITIES - Schedule of Interest Income Earned for Funds Loaned to Utility Money Pool (Details) - Utility - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
APPALACHIAN POWER COMPANY |  |  |
Short-Term Debt [Line Items] |  |  |
Interest Income Earned on Advances to the Money Pool | $ 1.6 | $ 1.1 | $ 2.8
INDIANA MICHIGAN POWER COMPANY |  |  |
Short-Term Debt [Line Items] |  |  |
Interest Income Earned on Advances to the Money Pool | 0.0 | 2.4 | 0.5
OHIO POWER COMPANY |  |  |
Short-Term Debt [Line Items] |  |  |
Interest Income Earned on Advances to the Money Pool | 3.2 | 0.1 | 0.4
PUBLIC SERVICE COMPANY OF OKLAHOMA |  |  |
Short-Term Debt [Line Items] |  |  |
Interest Income Earned on Advances to the Money Pool | 1.0 | 1.5 | 0.3
Nonutility | AEP TEXAS INC. |  |  |
Short-Term Debt [Line Items] |  |  |
Interest Income Earned on Advances to the Money Pool | 4.4 | 0.1 | 2.6
Nonutility | SOUTHWESTERN ELECTRIC POWER COMPANY |  |  |
Short-Term Debt [Line Items] |  |  |
Interest Income Earned on Advances to the Money Pool | 0.2 | 0.2 | 0.2
Direct Borrowing | AEP TRANSMISSION COMPANY, LLC |  |  |
Short-Term Debt [Line Items] |  |  |
Interest Income Earned on Advances to the Money Pool | $ 10.5 | $ 7.0 | $ 1.6

X
- Definition Interest Income Earned on Advances to the Money Pool + References No definition available. + Details
Name: | aep_InterestIncomeEarnedOnAdvancesToTheMoneyPool
Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShortTermDebtLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | aep_MoneyPoolParticipantbyCompanyTypeAxis=aep_UtilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_AppalachianPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_IndianaMichiganPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_OhioPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_PublicServiceCompanyOfOklahomaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | aep_MoneyPoolParticipantByCompanyType2Axis=aep_NonutilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_AEPTexasInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_SouthwesternElectricPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | aep_MoneyPoolParticipantByCompanyType2Axis=aep_DirectBorrowingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_AEPTransmissionCompanyLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |