XML 234 R163.htm IDEA: XBRL DOCUMENT
v3.25.0.1

DERIVATIVES AND HEDGING - Schedule of the Notional Volume of Derivative Instruments (Details) gal in Millions, MWh in Millions, MMBTU in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) MMBTU MWh gal | Dec. 31, 2023 USD ($) MWh MMBTU gal
Power (MWhs) |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MWh | 282.4 | 246.8
Power (MWhs) | AEP Texas |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MWh | 0.0 | 0.0
Power (MWhs) | APCo |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MWh | 23.6 | 16.8
Power (MWhs) | I&M |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MWh | 7.7 | 5.9
Power (MWhs) | OPCo |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MWh | 2.0 | 2.2
Power (MWhs) | PSO |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MWh | 5.0 | 4.1
Power (MWhs) | SWEPCo |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MWh | 4.6 | 2.9
Natural Gas (MMBtus) |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MMBTU | 152.8 | 151.6
Natural Gas (MMBtus) | AEP Texas |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MMBTU | 0.0 | 0.0
Natural Gas (MMBtus) | APCo |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MMBTU | 42.2 | 37.3
Natural Gas (MMBtus) | I&M |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MMBTU | 0.0 | 0.0
Natural Gas (MMBtus) | OPCo |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MMBTU | 0.0 | 0.0
Natural Gas (MMBtus) | PSO |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MMBTU | 46.2 | 34.9
Natural Gas (MMBtus) | SWEPCo |  |
Derivative [Line Items] |  |
Notional amount, energy measure | MMBTU | 15.4 | 17.9
Heating Oil and Gasoline (Gallons) |  |
Derivative [Line Items] |  |
Notional amount, volume | gal | 7.9 | 6.5
Heating Oil and Gasoline (Gallons) | AEP Texas |  |
Derivative [Line Items] |  |
Notional amount, volume | gal | 2.0 | 1.8
Heating Oil and Gasoline (Gallons) | APCo |  |
Derivative [Line Items] |  |
Notional amount, volume | gal | 0.9 | 1.0
Heating Oil and Gasoline (Gallons) | I&M |  |
Derivative [Line Items] |  |
Notional amount, volume | gal | 2.0 | 0.6
Heating Oil and Gasoline (Gallons) | OPCo |  |
Derivative [Line Items] |  |
Notional amount, volume | gal | 1.1 | 1.2
Heating Oil and Gasoline (Gallons) | PSO |  |
Derivative [Line Items] |  |
Notional amount, volume | gal | 0.7 | 0.7
Heating Oil and Gasoline (Gallons) | SWEPCo |  |
Derivative [Line Items] |  |
Notional amount, volume | gal | 0.9 | 0.9
Interest Rate (USD) |  |
Derivative [Line Items] |  |
Notional amount | $ 59.3 | $ 80.1
Interest Rate (USD) | AEP Texas |  |
Derivative [Line Items] |  |
Notional amount | 0.0 | 0.0
Interest Rate (USD) | APCo |  |
Derivative [Line Items] |  |
Notional amount | 0.0 | 0.0
Interest Rate (USD) | I&M |  |
Derivative [Line Items] |  |
Notional amount | 0.0 | 0.0
Interest Rate (USD) | OPCo |  |
Derivative [Line Items] |  |
Notional amount | 0.0 | 0.0
Interest Rate (USD) | PSO |  |
Derivative [Line Items] |  |
Notional amount | 0.0 | 0.0
Interest Rate (USD) | SWEPCo |  |
Derivative [Line Items] |  |
Notional amount | 0.0 | 0.0
Interest Rate on Long-term Debt (USD) |  |
Derivative [Line Items] |  |
Notional amount | 950.0 | 1,300.0
Interest Rate on Long-term Debt (USD) | AEP Texas |  |
Derivative [Line Items] |  |
Notional amount | 0.0 | 150.0
Interest Rate on Long-term Debt (USD) | APCo |  |
Derivative [Line Items] |  |
Notional amount | 0.0 | 0.0
Interest Rate on Long-term Debt (USD) | I&M |  |
Derivative [Line Items] |  |
Notional amount | 0.0 | 0.0
Interest Rate on Long-term Debt (USD) | OPCo |  |
Derivative [Line Items] |  |
Notional amount | 0.0 | 0.0
Interest Rate on Long-term Debt (USD) | PSO |  |
Derivative [Line Items] |  |
Notional amount | 0.0 | 0.0
Interest Rate on Long-term Debt (USD) | SWEPCo |  |
Derivative [Line Items] |  |
Notional amount | $ 0.0 | $ 0.0

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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal energy measure used to calculate payments on a derivative instrument. + References No definition available. + Details
Name: | us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:energyItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal volume used to calculate payments on a derivative instrument. + References No definition available. + Details
Name: | us-gaap_DerivativeNonmonetaryNotionalAmountVolume
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A + Details
Name: | us-gaap_DerivativeNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=aep_NaturalGasContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=aep_HeatingOilAndGasolineContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=aep_InterestRateOnLongTermDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |