XML 241 R170.htm IDEA: XBRL DOCUMENT
v3.25.0.1

DERIVATIVES AND HEDGING - Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Commodity |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | $ 98.5 | $ 104.9
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | 33.9 | 38.3
Commodity | AEP Texas |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | 0.0 | 0.0
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | 0.0 | 0.0
Commodity | APCo |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | 0.0 | 0.0
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | 0.0 | 0.0
Commodity | I&M |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | 0.0 | 0.0
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | 0.0 | 0.0
Commodity | PSO |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | 0.0 | 0.0
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | 0.0 | 0.0
Commodity | SWEPCo |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | 0.0 | 0.0
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | 0.0 | 0.0
Interest Rate on Long-term Debt (USD) |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | 3.3 | (8.1)
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | 2.8 | 3.2
Interest Rate on Long-term Debt (USD) | AEP Texas |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | 6.3 | 0.5
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | 0.7 | 0.2
Interest Rate on Long-term Debt (USD) | APCo |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | 5.1 | 5.9
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | 0.8 | 0.8
Interest Rate on Long-term Debt (USD) | I&M |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | (5.1) | (5.5)
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | (0.4) | (0.4)
Interest Rate on Long-term Debt (USD) | PSO |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | 3.6 | (0.2)
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | 0.2 | 0.0
Interest Rate on Long-term Debt (USD) | SWEPCo |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
AOCI Gain (Loss) Net of Tax | 1.0 | 1.3
Portion Expected to be Reclassed to Net Income During the Next Twelve Months | $ 0.3 | $ 0.3

X
- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480870/815-30-50-1 + Details
Name: | us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths
Namespace Prefix: | us-gaap_
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_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-15 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Subparagraph (c) -SubTopic 10 -Topic 815 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C + Details
Name: | us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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