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In November 2024, the Virginia SCC issued a final order approving an annual base rate increase of $ 10 million, effective January 2025, based on a 9.75 % ROE.
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9.75
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us-gaap:PublicUtilitiesApprovedReturnOnEquityPercentage
In November 2024, APCo and WPCo (the Companies) filed a request with the WVPSC for a net $ 251 million annual increase in base rates based upon a proposed 10.8 % ROE and a proposed capital structure of 52 % debt and 48 % common equity. The requested net annual increase in base rates excludes the Companies’ proposed $ ...
text
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text: <entity> 251 </entity> <entity type> monetaryItemType </entity type> <context> In November 2024, APCo and WPCo (the Companies) filed a request with the WVPSC for a net $ 251 million annual increase in base rates based upon a proposed 10.8 % ROE and a proposed capital structure of 52 % debt and 48 % common equity....
us-gaap:PublicUtilitiesRequestedRateIncreaseDecreaseAmount
In November 2024, APCo and WPCo (the Companies) filed a request with the WVPSC for a net $ 251 million annual increase in base rates based upon a proposed 10.8 % ROE and a proposed capital structure of 52 % debt and 48 % common equity. The requested net annual increase in base rates excludes the Companies’ proposed $ ...
text
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us-gaap:PublicUtilitiesRequestedReturnOnEquityPercentage
In November 2024, APCo and WPCo (the Companies) filed a request with the WVPSC for a net $ 251 million annual increase in base rates based upon a proposed 10.8 % ROE and a proposed capital structure of 52 % debt and 48 % common equity. The requested net annual increase in base rates excludes the Companies’ proposed $ ...
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text: <entity> 52 </entity> <entity type> percentItemType </entity type> <context> In November 2024, APCo and WPCo (the Companies) filed a request with the WVPSC for a net $ 251 million annual increase in base rates based upon a proposed 10.8 % ROE and a proposed capital structure of 52 % debt and 48 % common equity. ...
us-gaap:PublicUtilitiesRequestedDebtCapitalStructurePercentage
In November 2024, APCo and WPCo (the Companies) filed a request with the WVPSC for a net $ 251 million annual increase in base rates based upon a proposed 10.8 % ROE and a proposed capital structure of 52 % debt and 48 % common equity. The requested net annual increase in base rates excludes the Companies’ proposed $ ...
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text: <entity> 48 </entity> <entity type> percentItemType </entity type> <context> In November 2024, APCo and WPCo (the Companies) filed a request with the WVPSC for a net $ 251 million annual increase in base rates based upon a proposed 10.8 % ROE and a proposed capital structure of 52 % debt and 48 % common equity. ...
us-gaap:PublicUtilitiesRequestedEquityCapitalStructurePercentage
In November 2024, APCo and WPCo (the Companies) filed a request with the WVPSC for a net $ 251 million annual increase in base rates based upon a proposed 10.8 % ROE and a proposed capital structure of 52 % debt and 48 % common equity. The requested net annual increase in base rates excludes the Companies’ proposed $ ...
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us-gaap:PublicUtilitiesRequestedRateIncreaseDecreaseAmount
In November 2024, APCo and WPCo (the Companies) filed a request with the WVPSC for a net $ 251 million annual increase in base rates based upon a proposed 10.8 % ROE and a proposed capital structure of 52 % debt and 48 % common equity. The requested net annual increase in base rates excludes the Companies’ proposed $ ...
text
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us-gaap:PublicUtilitiesRequestedRateIncreaseDecreaseAmount
In March 2024, APCo and WPCo (the Companies) submitted an annual MRBC surcharge update filing with the WVPSC requesting a $ 32 million annual increase in the Companies’ combined MRBC rates. The MRBC is an infrastructure investment tracker that allows limited cost recovery related to capital investments between the Com...
text
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text: <entity> 32 </entity> <entity type> monetaryItemType </entity type> <context> In March 2024, APCo and WPCo (the Companies) submitted an annual MRBC surcharge update filing with the WVPSC requesting a $ 32 million annual increase in the Companies’ combined MRBC rates. The MRBC is an infrastructure investment trac...
us-gaap:PublicUtilitiesRequestedRateIncreaseDecreaseAmount
In January 2025, ETT filed a request with the PUCT for a $ 57 million annual base rate increase over its adjusted test year revenues which includes interim transmission rate updates. ETT’s request is based upon a proposed 10.6 % ROE with a capital structure of 55 % debt and 45 % common equity. The rate case seeks a p...
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text: <entity> 57 </entity> <entity type> monetaryItemType </entity type> <context> In January 2025, ETT filed a request with the PUCT for a $ 57 million annual base rate increase over its adjusted test year revenues which includes interim transmission rate updates. ETT’s request is based upon a proposed 10.6 % ROE wi...
us-gaap:PublicUtilitiesRequestedRateIncreaseDecreaseAmount
In January 2025, ETT filed a request with the PUCT for a $ 57 million annual base rate increase over its adjusted test year revenues which includes interim transmission rate updates. ETT’s request is based upon a proposed 10.6 % ROE with a capital structure of 55 % debt and 45 % common equity. The rate case seeks a p...
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us-gaap:PublicUtilitiesRequestedReturnOnEquityPercentage
In January 2025, ETT filed a request with the PUCT for a $ 57 million annual base rate increase over its adjusted test year revenues which includes interim transmission rate updates. ETT’s request is based upon a proposed 10.6 % ROE with a capital structure of 55 % debt and 45 % common equity. The rate case seeks a p...
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us-gaap:PublicUtilitiesRequestedDebtCapitalStructurePercentage
In January 2025, ETT filed a request with the PUCT for a $ 57 million annual base rate increase over its adjusted test year revenues which includes interim transmission rate updates. ETT’s request is based upon a proposed 10.6 % ROE with a capital structure of 55 % debt and 45 % common equity. The rate case seeks a p...
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us-gaap:PublicUtilitiesRequestedEquityCapitalStructurePercentage
In August 2023, I&M filed a request with the IURC for a $ 116 million annual increase in Indiana base rates based upon a 2024 forecasted test year, a proposed 10.5 % ROE and a proposed capital structure of 48.8 % debt and 51.2 % common equity. I&M proposed that the annual increase in base rates be implemented in two s...
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us-gaap:PublicUtilitiesRequestedReturnOnEquityPercentage
In May 2024, the IURC issued an order approving the settlement agreement with minor modifications. In January 2025, in accordance with the IURC’s order on I&M’s 2023 Indiana base case filing, I&M submitted a filing with the IURC reflecting December 31, 2024 balances of electric plant in service in comparison to I&M’s ...
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us-gaap:PublicUtilitiesApprovedRateIncreaseDecreaseAmount
In September 2023, I&M filed a request with the MPSC for a $ 34 million annual increase in Michigan base rates based upon a 2024 forecasted test year, a proposed 10.5 % ROE and a capital structure of 49.4 % debt and 50.6 % common equity. The proposed annual increase includes an $ 11 million annual increase in deprecia...
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us-gaap:PublicUtilitiesRequestedReturnOnEquityPercentage
In July 2024, the MPSC issued a final order approving an annual base rate increase of $ 17 million based on a 9.86 % ROE and a capital structure of 52 % debt and 48 % common equity. The MPSC also ordered that Michigan jurisdictional Cook Plant PTCs will be reflected as a deferral in I&M’s PSCR reconciliation and rejec...
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us-gaap:PublicUtilitiesApprovedRateIncreaseDecreaseAmount
In July 2024, the MPSC issued a final order approving an annual base rate increase of $ 17 million based on a 9.86 % ROE and a capital structure of 52 % debt and 48 % common equity. The MPSC also ordered that Michigan jurisdictional Cook Plant PTCs will be reflected as a deferral in I&M’s PSCR reconciliation and rejec...
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us-gaap:PublicUtilitiesApprovedReturnOnEquityPercentage
In July 2024, the MPSC issued a final order approving an annual base rate increase of $ 17 million based on a 9.86 % ROE and a capital structure of 52 % debt and 48 % common equity. The MPSC also ordered that Michigan jurisdictional Cook Plant PTCs will be reflected as a deferral in I&M’s PSCR reconciliation and rejec...
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us-gaap:PublicUtilitiesApprovedDebtCapitalStructurePercentage
In July 2024, the MPSC issued a final order approving an annual base rate increase of $ 17 million based on a 9.86 % ROE and a capital structure of 52 % debt and 48 % common equity. The MPSC also ordered that Michigan jurisdictional Cook Plant PTCs will be reflected as a deferral in I&M’s PSCR reconciliation and rejec...
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us-gaap:PublicUtilitiesApprovedEquityCapitalStructurePercentage
In June 2023, KPCo filed a request with the KPSC for a $ 94 million net annual increase in base rates based upon a proposed 9.9 % ROE with the increase to be implemented no earlier than January 2024. In conjunction with its June 2023 filing, KPCo further requested to finance through the issuance of securitization bond...
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text: <entity> 9.9 </entity> <entity type> percentItemType </entity type> <context> In June 2023, KPCo filed a request with the KPSC for a $ 94 million net annual increase in base rates based upon a proposed 9.9 % ROE with the increase to be implemented no earlier than January 2024. In conjunction with its June 2023 f...
us-gaap:PublicUtilitiesRequestedReturnOnEquityPercentage
In June 2023, KPCo filed a request with the KPSC for a $ 94 million net annual increase in base rates based upon a proposed 9.9 % ROE with the increase to be implemented no earlier than January 2024. In conjunction with its June 2023 filing, KPCo further requested to finance through the issuance of securitization bond...
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us-gaap:PropertyPlantAndEquipmentNet
In January 2024, the KPSC issued an order modifying the November 2023 uncontested settlement agreement and approving an annual base rate increase of $ 60 million based upon a 9.75 % ROE effective with billing cycles mid-January 2024. The order reduced KPCo’s base rate revenue requirement by $ 14 million to allow reco...
text
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us-gaap:PublicUtilitiesApprovedReturnOnEquityPercentage
In January 2023, OPCo filed an application with the PUCO to approve an ESP that included proposed rate adjustments, proposed new riders and the continuation and modification of certain existing riders, including the DIR, effective June 2024 through May 2030. The proposal includes a return on common equity of 10.65 % on...
text
9.7
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text: <entity> 9.7 </entity> <entity type> percentItemType </entity type> <context> In January 2023, OPCo filed an application with the PUCO to approve an ESP that included proposed rate adjustments, proposed new riders and the continuation and modification of certain existing riders, including the DIR, effective June ...
us-gaap:PublicUtilitiesApprovedReturnOnEquityPercentage
In January 2024, PSO filed a request with the OCC for a $ 218 million annual base rate increase based upon a 10.8 % ROE with a capital structure of 48.9 % debt and 51.1 % common equity. PSO requested an expanded transmission cost recovery rider and a mechanism to recover generation costs necessary to comply with SPP’s...
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us-gaap:PublicUtilitiesRequestedReturnOnEquityPercentage
In 2016, SWEPCo filed a request with the PUCT for a net increase in Texas annual revenues of $ 69 million based upon a 10 % ROE. In January 2018, the PUCT issued a final order approving a net increase in Texas annual revenues of $ 50 million based upon a 9.6 % ROE, effective May 2017. The final order also included: (...
text
9.6
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text: <entity> 9.6 </entity> <entity type> percentItemType </entity type> <context> In 2016, SWEPCo filed a request with the PUCT for a net increase in Texas annual revenues of $ 69 million based upon a 10 % ROE. In January 2018, the PUCT issued a final order approving a net increase in Texas annual revenues of $ 50 m...
us-gaap:PublicUtilitiesApprovedReturnOnEquityPercentage
In October 2020, SWEPCo filed a request with the PUCT for a $ 105 million annual increase in Texas base rates based upon a proposed 10.35 % ROE. The request would move transmission and distribution interim revenues recovered through riders into base rates. Eliminating these riders would result in a net annual request...
text
10.35
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text: <entity> 10.35 </entity> <entity type> percentItemType </entity type> <context> In October 2020, SWEPCo filed a request with the PUCT for a $ 105 million annual increase in Texas base rates based upon a proposed 10.35 % ROE. The request would move transmission and distribution interim revenues recovered through ...
us-gaap:PublicUtilitiesRequestedReturnOnEquityPercentage
In January 2022, the PUCT issued a final order approving an annual revenue increase of $ 39 million based upon a 9.25 % ROE. The order also includes: (a) rates implemented retroactively back to March 18, 2021, (b) $ 5 million of the proposed increase related to vegetation management, (c) $ 2 million annually to establ...
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text: <entity> 9.25 </entity> <entity type> percentItemType </entity type> <context> In January 2022, the PUCT issued a final order approving an annual revenue increase of $ 39 million based upon a 9.25 % ROE. The order also includes: (a) rates implemented retroactively back to March 18, 2021, (b) $ 5 million of the p...
us-gaap:PublicUtilitiesApprovedReturnOnEquityPercentage
In 2020, Hurricanes Laura and Delta caused power outages and extensive damage to the SWEPCo service territories, primarily impacting the Louisiana jurisdiction. Following both hurricanes, the LPSC issued orders allowing Louisiana utilities, including SWEPCo, to establish regulatory assets to track and defer expenses a...
text
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text: <entity> 337 </entity> <entity type> monetaryItemType </entity type> <context> In 2020, Hurricanes Laura and Delta caused power outages and extensive damage to the SWEPCo service territories, primarily impacting the Louisiana jurisdiction. Following both hurricanes, the LPSC issued orders allowing Louisiana util...
us-gaap:SecuredDebt
In 2020, Hurricanes Laura and Delta caused power outages and extensive damage to the SWEPCo service territories, primarily impacting the Louisiana jurisdiction. Following both hurricanes, the LPSC issued orders allowing Louisiana utilities, including SWEPCo, to establish regulatory assets to track and defer expenses a...
text
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monetaryItemType
text: <entity> 180 </entity> <entity type> monetaryItemType </entity type> <context> In 2020, Hurricanes Laura and Delta caused power outages and extensive damage to the SWEPCo service territories, primarily impacting the Louisiana jurisdiction. Following both hurricanes, the LPSC issued orders allowing Louisiana util...
us-gaap:SecuredDebt
In 2020, Hurricanes Laura and Delta caused power outages and extensive damage to the SWEPCo service territories, primarily impacting the Louisiana jurisdiction. Following both hurricanes, the LPSC issued orders allowing Louisiana utilities, including SWEPCo, to establish regulatory assets to track and defer expenses a...
text
150
monetaryItemType
text: <entity> 150 </entity> <entity type> monetaryItemType </entity type> <context> In 2020, Hurricanes Laura and Delta caused power outages and extensive damage to the SWEPCo service territories, primarily impacting the Louisiana jurisdiction. Following both hurricanes, the LPSC issued orders allowing Louisiana util...
us-gaap:SecuredDebt
In 2020, Hurricanes Laura and Delta caused power outages and extensive damage to the SWEPCo service territories, primarily impacting the Louisiana jurisdiction. Following both hurricanes, the LPSC issued orders allowing Louisiana utilities, including SWEPCo, to establish regulatory assets to track and defer expenses a...
text
7
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text: <entity> 7 </entity> <entity type> monetaryItemType </entity type> <context> In 2020, Hurricanes Laura and Delta caused power outages and extensive damage to the SWEPCo service territories, primarily impacting the Louisiana jurisdiction. Following both hurricanes, the LPSC issued orders allowing Louisiana utilit...
us-gaap:DeferredFinanceCostsGross
In December 2021, the Dolet Hills Power Station was retired. As part of the 2020 Texas Base Rate Case, the PUCT authorized recovery of SWEPCo’s Texas jurisdictional share of the Dolet Hills Power Station through 2046, but denied SWEPCo the ability to earn a return on this investment resulting in a disallowance of $ 12...
text
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text: <entity> 12 </entity> <entity type> monetaryItemType </entity type> <context> In December 2021, the Dolet Hills Power Station was retired. As part of the 2020 Texas Base Rate Case, the PUCT authorized recovery of SWEPCo’s Texas jurisdictional share of the Dolet Hills Power Station through 2046, but denied SWEPCo...
us-gaap:OtherAssetImpairmentCharges
In December 2021, the Dolet Hills Power Station was retired. As part of the 2020 Texas Base Rate Case, the PUCT authorized recovery of SWEPCo’s Texas jurisdictional share of the Dolet Hills Power Station through 2046, but denied SWEPCo the ability to earn a return on this investment resulting in a disallowance of $ 12...
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text: <entity> 2 </entity> <entity type> monetaryItemType </entity type> <context> In December 2021, the Dolet Hills Power Station was retired. As part of the 2020 Texas Base Rate Case, the PUCT authorized recovery of SWEPCo’s Texas jurisdictional share of the Dolet Hills Power Station through 2046, but denied SWEPCo ...
us-gaap:OtherAssetImpairmentCharges
In April 2024, the LPSC approved a unanimous settlement agreement filed by SWEPCo, LPSC staff and certain intervenors that resolved the prudency of the retirement of the Dolet Hills Power Station and resulted in a disallowance of $ 14 million in the first quarter of 2024.
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text: <entity> 14 </entity> <entity type> monetaryItemType </entity type> <context> In April 2024, the LPSC approved a unanimous settlement agreement filed by SWEPCo, LPSC staff and certain intervenors that resolved the prudency of the retirement of the Dolet Hills Power Station and resulted in a disallowance of $ 14 m...
us-gaap:OtherAssetImpairmentCharges
In March 2023, the Pirkey Plant was retired. As part of the 2020 Louisiana Base Rate Case, the LPSC authorized the recovery of SWEPCo’s Louisiana jurisdictional share of the Pirkey Plant, through a separate rider, through 2032. As part of the 2021 Arkansas Base Rate Case, the APSC granted SWEPCo regulatory asset trea...
text
69
monetaryItemType
text: <entity> 69 </entity> <entity type> monetaryItemType </entity type> <context> In March 2023, the Pirkey Plant was retired. As part of the 2020 Louisiana Base Rate Case, the LPSC authorized the recovery of SWEPCo’s Louisiana jurisdictional share of the Pirkey Plant, through a separate rider, through 2032. As par...
us-gaap:NetRegulatoryAssets
In March 2021, the LPSC issued an order allowing SWEPCo to recover up to $ 20 million of fuel costs in 2021 and defer approximately $ 35 million of additional costs with a recovery period to be determined at a later date. In August 2022, the LPSC staff filed testimony recommending fuel disallowances of up to $ 55 mill...
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text: <entity> 24 </entity> <entity type> monetaryItemType </entity type> <context> In March 2021, the LPSC issued an order allowing SWEPCo to recover up to $ 20 million of fuel costs in 2021 and defer approximately $ 35 million of additional costs with a recovery period to be determined at a later date. In August 202...
us-gaap:RegulatoryAssets
In March 2024, AEP increased its $ 4 billion revolving credit facility to $ 5 billion and extended the due date from March 2027 to March 2029. Also, in March 2024, AEP extended the due date of its $ 1 billion revolving credit facility from March 2025 to March 2027. AEP may issue up to $ 1.2 billion as letters of cred...
text
4
monetaryItemType
text: <entity> 4 </entity> <entity type> monetaryItemType </entity type> <context> In March 2024, AEP increased its $ 4 billion revolving credit facility to $ 5 billion and extended the due date from March 2027 to March 2029. Also, in March 2024, AEP extended the due date of its $ 1 billion revolving credit facility f...
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
In March 2024, AEP increased its $ 4 billion revolving credit facility to $ 5 billion and extended the due date from March 2027 to March 2029. Also, in March 2024, AEP extended the due date of its $ 1 billion revolving credit facility from March 2025 to March 2027. AEP may issue up to $ 1.2 billion as letters of cred...
text
5
monetaryItemType
text: <entity> 5 </entity> <entity type> monetaryItemType </entity type> <context> In March 2024, AEP increased its $ 4 billion revolving credit facility to $ 5 billion and extended the due date from March 2027 to March 2029. Also, in March 2024, AEP extended the due date of its $ 1 billion revolving credit facility f...
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
In March 2024, AEP increased its $ 4 billion revolving credit facility to $ 5 billion and extended the due date from March 2027 to March 2029. Also, in March 2024, AEP extended the due date of its $ 1 billion revolving credit facility from March 2025 to March 2027. AEP may issue up to $ 1.2 billion as letters of cred...
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1
monetaryItemType
text: <entity> 1 </entity> <entity type> monetaryItemType </entity type> <context> In March 2024, AEP increased its $ 4 billion revolving credit facility to $ 5 billion and extended the due date from March 2027 to March 2029. Also, in March 2024, AEP extended the due date of its $ 1 billion revolving credit facility f...
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
In March 2024, AEP increased its $ 4 billion revolving credit facility to $ 5 billion and extended the due date from March 2027 to March 2029. Also, in March 2024, AEP extended the due date of its $ 1 billion revolving credit facility from March 2025 to March 2027. AEP may issue up to $ 1.2 billion as letters of cred...
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text: <entity> 1.2 </entity> <entity type> monetaryItemType </entity type> <context> In March 2024, AEP increased its $ 4 billion revolving credit facility to $ 5 billion and extended the due date from March 2027 to March 2029. Also, in March 2024, AEP extended the due date of its $ 1 billion revolving credit facility...
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
In March 2024, AEP increased its $ 4 billion revolving credit facility to $ 5 billion and extended the due date from March 2027 to March 2029. Also, in March 2024, AEP extended the due date of its $ 1 billion revolving credit facility from March 2025 to March 2027. AEP may issue up to $ 1.2 billion as letters of cred...
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no
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text: <entity> no </entity> <entity type> monetaryItemType </entity type> <context> In March 2024, AEP increased its $ 4 billion revolving credit facility to $ 5 billion and extended the due date from March 2027 to March 2029. Also, in March 2024, AEP extended the due date of its $ 1 billion revolving credit facility ...
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
An uncommitted facility gives the issuer of the facility the right to accept or decline each request made under the facility. AEP issues letters of credit on behalf of subsidiaries under six uncommitted facilities totaling $ 450 million. The Registrants’ maximum future payments for letters of credit issued under the u...
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450
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text: <entity> 450 </entity> <entity type> monetaryItemType </entity type> <context> An uncommitted facility gives the issuer of the facility the right to accept or decline each request made under the facility. AEP issues letters of credit on behalf of subsidiaries under six uncommitted facilities totaling $ 450 milli...
us-gaap:DebtInstrumentFaceAmount
In April 2024, AEP reached an agreement with the four shareholders to fully and finally resolve the Derivative Actions and the Litigation Demand, and all claims asserted or that could have been asserted by any AEP shareholder based on the facts alleged, in the manner and upon the terms and conditions set forth in the s...
text
450
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text: <entity> 450 </entity> <entity type> monetaryItemType </entity type> <context> In April 2024, AEP reached an agreement with the four shareholders to fully and finally resolve the Derivative Actions and the Litigation Demand, and all claims asserted or that could have been asserted by any AEP shareholder based on ...
us-gaap:LitigationSettlementAmountAwardedToOtherParty
In May 2021, AEP received a subpoena from the SEC’s Division of Enforcement seeking various documents, including documents relating to the passage of HB 6 and documents relating to AEP’s policies and financial processes and controls. In August 2022, AEP received a second subpoena from the SEC seeking various additiona...
text
19
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text: <entity> 19 </entity> <entity type> monetaryItemType </entity type> <context> In May 2021, AEP received a subpoena from the SEC’s Division of Enforcement seeking various documents, including documents relating to the passage of HB 6 and documents relating to AEP’s policies and financial processes and controls. I...
us-gaap:LossContingencyLossInPeriod
In 2020, PSO and SWEPCo received regulatory approvals to acquire the NCWF, comprised of three Oklahoma wind facilities totaling 1,484 MWs, on a fixed cost turn-key basis. PSO and SWEPCo own undivided interests of 45.5 % and 54.5 % of the NCWF, respectively. In total, the three wind facilities cost approximately $ 2 b...
text
three
integerItemType
text: <entity> three </entity> <entity type> integerItemType </entity type> <context> In 2020, PSO and SWEPCo received regulatory approvals to acquire the NCWF, comprised of three Oklahoma wind facilities totaling 1,484 MWs, on a fixed cost turn-key basis. PSO and SWEPCo own undivided interests of 45.5 % and 54.5 % of...
us-gaap:NumberOfRealEstateProperties
In 2020, PSO and SWEPCo received regulatory approvals to acquire the NCWF, comprised of three Oklahoma wind facilities totaling 1,484 MWs, on a fixed cost turn-key basis. PSO and SWEPCo own undivided interests of 45.5 % and 54.5 % of the NCWF, respectively. In total, the three wind facilities cost approximately $ 2 b...
text
45.5
percentItemType
text: <entity> 45.5 </entity> <entity type> percentItemType </entity type> <context> In 2020, PSO and SWEPCo received regulatory approvals to acquire the NCWF, comprised of three Oklahoma wind facilities totaling 1,484 MWs, on a fixed cost turn-key basis. PSO and SWEPCo own undivided interests of 45.5 % and 54.5 % of ...
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired
In 2020, PSO and SWEPCo received regulatory approvals to acquire the NCWF, comprised of three Oklahoma wind facilities totaling 1,484 MWs, on a fixed cost turn-key basis. PSO and SWEPCo own undivided interests of 45.5 % and 54.5 % of the NCWF, respectively. In total, the three wind facilities cost approximately $ 2 b...
text
54.5
percentItemType
text: <entity> 54.5 </entity> <entity type> percentItemType </entity type> <context> In 2020, PSO and SWEPCo received regulatory approvals to acquire the NCWF, comprised of three Oklahoma wind facilities totaling 1,484 MWs, on a fixed cost turn-key basis. PSO and SWEPCo own undivided interests of 45.5 % and 54.5 % of ...
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired
In 2020, PSO and SWEPCo received regulatory approvals to acquire the NCWF, comprised of three Oklahoma wind facilities totaling 1,484 MWs, on a fixed cost turn-key basis. PSO and SWEPCo own undivided interests of 45.5 % and 54.5 % of the NCWF, respectively. In total, the three wind facilities cost approximately $ 2 b...
text
2
monetaryItemType
text: <entity> 2 </entity> <entity type> monetaryItemType </entity type> <context> In 2020, PSO and SWEPCo received regulatory approvals to acquire the NCWF, comprised of three Oklahoma wind facilities totaling 1,484 MWs, on a fixed cost turn-key basis. PSO and SWEPCo own undivided interests of 45.5 % and 54.5 % of th...
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
In March 2022, PSO and SWEPCo acquired respective undivided ownership interests in the entity that owned Traverse, the final NCWF project, during its development and construction for $ 1.2 billion. Traverse was placed in-service in March 2022. Immediately following the acquisition, PSO and SWEPCo liquidated the entit...
text
1.2
monetaryItemType
text: <entity> 1.2 </entity> <entity type> monetaryItemType </entity type> <context> In March 2022, PSO and SWEPCo acquired respective undivided ownership interests in the entity that owned Traverse, the final NCWF project, during its development and construction for $ 1.2 billion. Traverse was placed in-service in Ma...
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
In November 2022, PSO entered into an agreement to acquire the Rock Falls Wind Facility. In February 2023, the FERC approved PSO’s acquisition of the Rock Falls Wind Facility under Section 203 of the Federal Power Act. In March 2023, PSO acquired an ownership interest in the entity that owned Rock Falls during its de...
text
146
monetaryItemType
text: <entity> 146 </entity> <entity type> monetaryItemType </entity type> <context> In November 2022, PSO entered into an agreement to acquire the Rock Falls Wind Facility. In February 2023, the FERC approved PSO’s acquisition of the Rock Falls Wind Facility under Section 203 of the Federal Power Act. In March 2023,...
us-gaap:BusinessCombinationConsiderationTransferred1
In April 2023, AEP initiated a sales process for its ownership in AEP OnSite Partners. AEP OnSite Partners targeted opportunities in distributed solar, combined heat and power, energy storage, waste heat recovery, energy efficiency, peaking generation and other energy solutions. In May 2024, AEP signed an agreement to...
text
318
monetaryItemType
text: <entity> 318 </entity> <entity type> monetaryItemType </entity type> <context> In April 2023, AEP initiated a sales process for its ownership in AEP OnSite Partners. AEP OnSite Partners targeted opportunities in distributed solar, combined heat and power, energy storage, waste heat recovery, energy efficiency, pe...
us-gaap:ProceedsFromDivestitureOfBusinesses
In December 2023, AEP and the joint owner signed an agreement to sell NMRD to a nonaffiliated third party and the sale was completed in February 2024. AEP received cash proceeds of approximately $ 107 million, net of taxes and transaction costs. The transaction did not have a material impact on net income or financial...
text
107
monetaryItemType
text: <entity> 107 </entity> <entity type> monetaryItemType </entity type> <context> In December 2023, AEP and the joint owner signed an agreement to sell NMRD to a nonaffiliated third party and the sale was completed in February 2024. AEP received cash proceeds of approximately $ 107 million, net of taxes and transac...
us-gaap:ProceedsFromDivestitureOfBusinesses
As a result of delays in the anticipated timing of the closing of the transaction and other factors, AEP recorded a $ 363 million pretax loss on the expected sale of the Kentucky Operations for the year ended December 31, 2022. In April 2023, AEP, AEPTCo and Liberty entered into a Mutual Termination Agreement (Termina...
text
363
monetaryItemType
text: <entity> 363 </entity> <entity type> monetaryItemType </entity type> <context> As a result of delays in the anticipated timing of the closing of the transaction and other factors, AEP recorded a $ 363 million pretax loss on the expected sale of the Kentucky Operations for the year ended December 31, 2022. In Apr...
us-gaap:OtherAssetImpairmentCharges
In August 2023, AEP completed the sale of the entire portfolio to the nonaffiliated party and received cash proceeds of approximately $ 1.2 billion, net of taxes and transaction costs. AEP recorded a pretax loss of $ 93 million ($ 73 million after-tax) for the year ended December 31, 2023 related to the sale.
text
1.2
monetaryItemType
text: <entity> 1.2 </entity> <entity type> monetaryItemType </entity type> <context> In August 2023, AEP completed the sale of the entire portfolio to the nonaffiliated party and received cash proceeds of approximately $ 1.2 billion, net of taxes and transaction costs. AEP recorded a pretax loss of $ 93 million ($ 73 ...
us-gaap:ProceedsFromDivestitureOfBusinesses
In August 2023, AEP completed the sale of the entire portfolio to the nonaffiliated party and received cash proceeds of approximately $ 1.2 billion, net of taxes and transaction costs. AEP recorded a pretax loss of $ 93 million ($ 73 million after-tax) for the year ended December 31, 2023 related to the sale.
text
93
monetaryItemType
text: <entity> 93 </entity> <entity type> monetaryItemType </entity type> <context> In August 2023, AEP completed the sale of the entire portfolio to the nonaffiliated party and received cash proceeds of approximately $ 1.2 billion, net of taxes and transaction costs. AEP recorded a pretax loss of $ 93 million ($ 73 m...
us-gaap:GainLossOnSaleOfBusiness
In June 2022, AEP closed on the sale of certain mineral rights to a nonaffiliated third-party and received $ 120 million of proceeds. The sale resulted in a pretax gain of $ 116 million in the second quarter of 2022.
text
120
monetaryItemType
text: <entity> 120 </entity> <entity type> monetaryItemType </entity type> <context> In June 2022, AEP closed on the sale of certain mineral rights to a nonaffiliated third-party and received $ 120 million of proceeds. The sale resulted in a pretax gain of $ 116 million in the second quarter of 2022. </context>
us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment
In June 2022, AEP closed on the sale of certain mineral rights to a nonaffiliated third-party and received $ 120 million of proceeds. The sale resulted in a pretax gain of $ 116 million in the second quarter of 2022.
text
116
monetaryItemType
text: <entity> 116 </entity> <entity type> monetaryItemType </entity type> <context> In June 2022, AEP closed on the sale of certain mineral rights to a nonaffiliated third-party and received $ 120 million of proceeds. The sale resulted in a pretax gain of $ 116 million in the second quarter of 2022. </context>
us-gaap:GainLossOnSaleOfOtherAssets
In December 2023, SWEPCo recorded a pretax, non-cash disallowance of $ 86 million in Asset Impairments and Other Related Charges on the statements of income due to regulatory disallowance of recovery of AFUDC on Turk Plant in the 2012 Texas Base Rate case. See the “2012 Texas Base Rate Case” section of Note 4 for addi...
text
86
monetaryItemType
text: <entity> 86 </entity> <entity type> monetaryItemType </entity type> <context> In December 2023, SWEPCo recorded a pretax, non-cash disallowance of $ 86 million in Asset Impairments and Other Related Charges on the statements of income due to regulatory disallowance of recovery of AFUDC on Turk Plant in the 2012 T...
us-gaap:OtherAssetImpairmentCharges
In December 2023, as a result of sale negotiations AEP determined a decline in the fair value of AEP’s investment in NMRD was other than temporary. In accordance with the accounting guidance for “Investment - Equity Method and Joint Ventures”, in the fourth quarter of 2023 AEP recorded a pretax other than temporary im...
text
19
monetaryItemType
text: <entity> 19 </entity> <entity type> monetaryItemType </entity type> <context> In December 2023, as a result of sale negotiations AEP determined a decline in the fair value of AEP’s investment in NMRD was other than temporary. In accordance with the accounting guidance for “Investment - Equity Method and Joint Ve...
us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment
In 2019, AEP acquired a 50 % ownership interest in five non-consolidated joint ventures, including Flat Ridge 2 Wind LLC (Flat Ridge 2), and two tax equity partnerships. The five non-consolidated joint ventures are jointly owned and operated by BP Wind Energy. Flat Ridge 2 sells electricity to three counterparties th...
text
50
percentItemType
text: <entity> 50 </entity> <entity type> percentItemType </entity type> <context> In 2019, AEP acquired a 50 % ownership interest in five non-consolidated joint ventures, including Flat Ridge 2 Wind LLC (Flat Ridge 2), and two tax equity partnerships. The five non-consolidated joint ventures are jointly owned and ope...
us-gaap:EquityMethodInvestmentOwnershipPercentage
Regarding AEP’s investment in Flat Ridge 2, in June 2022, as a result of Flat Ridge 2’s deteriorating financial performance, sale negotiations and AEP’s ongoing evaluation and ultimate decision to exit the investment in the near term, AEP determined a decline in the fair value of AEP’s investment in Flat Ridge 2 was ot...
text
186
monetaryItemType
text: <entity> 186 </entity> <entity type> monetaryItemType </entity type> <context> Regarding AEP’s investment in Flat Ridge 2, in June 2022, as a result of Flat Ridge 2’s deteriorating financial performance, sale negotiations and AEP’s ongoing evaluation and ultimate decision to exit the investment in the near term, ...
us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment
Regarding AEP’s investment in Flat Ridge 2, in June 2022, as a result of Flat Ridge 2’s deteriorating financial performance, sale negotiations and AEP’s ongoing evaluation and ultimate decision to exit the investment in the near term, AEP determined a decline in the fair value of AEP’s investment in Flat Ridge 2 was ot...
text
2
monetaryItemType
text: <entity> 2 </entity> <entity type> monetaryItemType </entity type> <context> Regarding AEP’s investment in Flat Ridge 2, in June 2022, as a result of Flat Ridge 2’s deteriorating financial performance, sale negotiations and AEP’s ongoing evaluation and ultimate decision to exit the investment in the near term, AE...
us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment
In January 2022, the PUCT issued a final order which included a return of investment only for the recovery of the Dolet Hills Power Station. As a result of the final order, SWEPCo recorded a disallowance of $ 12 million associated with the lack of return on the Dolet Hills Power Station. In February 2022, SWEPCo file...
text
12
monetaryItemType
text: <entity> 12 </entity> <entity type> monetaryItemType </entity type> <context> In January 2022, the PUCT issued a final order which included a return of investment only for the recovery of the Dolet Hills Power Station. As a result of the final order, SWEPCo recorded a disallowance of $ 12 million associated with...
us-gaap:OtherAssetImpairmentCharges
No contributions were made to the qualified pension plan for the years ended December 31, 2024 and 2023, respectively. Contributions to the non-qualified pension plans were $ 14 million and $ 8 million for the years ended December 31, 2024 and 2023, respectively.
text
14
monetaryItemType
text: <entity> 14 </entity> <entity type> monetaryItemType </entity type> <context> No contributions were made to the qualified pension plan for the years ended December 31, 2024 and 2023, respectively. Contributions to the non-qualified pension plans were $ 14 million and $ 8 million for the years ended December 31, ...
us-gaap:DefinedBenefitPlanContributionsByEmployer
No contributions were made to the qualified pension plan for the years ended December 31, 2024 and 2023, respectively. Contributions to the non-qualified pension plans were $ 14 million and $ 8 million for the years ended December 31, 2024 and 2023, respectively.
text
8
monetaryItemType
text: <entity> 8 </entity> <entity type> monetaryItemType </entity type> <context> No contributions were made to the qualified pension plan for the years ended December 31, 2024 and 2023, respectively. Contributions to the non-qualified pension plans were $ 14 million and $ 8 million for the years ended December 31, 2...
us-gaap:DefinedBenefitPlanContributionsByEmployer
AEP affiliates contributed $ 379 thousand, $ 396 thousand and $ 329 thousand to the United Mine Workers of America 1974 Pension Plan for the years ended December 31, 2024, 2023 and 2022, respectively. The contributions did not include surcharges. An AEP affiliate, Cook Coal Terminal (CCT), was listed in the plan’s 20...
text
379
monetaryItemType
text: <entity> 379 </entity> <entity type> monetaryItemType </entity type> <context> AEP affiliates contributed $ 379 thousand, $ 396 thousand and $ 329 thousand to the United Mine Workers of America 1974 Pension Plan for the years ended December 31, 2024, 2023 and 2022, respectively. The contributions did not include...
us-gaap:MultiemployerPlanEmployerContributionCost
AEP affiliates contributed $ 379 thousand, $ 396 thousand and $ 329 thousand to the United Mine Workers of America 1974 Pension Plan for the years ended December 31, 2024, 2023 and 2022, respectively. The contributions did not include surcharges. An AEP affiliate, Cook Coal Terminal (CCT), was listed in the plan’s 20...
text
396
monetaryItemType
text: <entity> 396 </entity> <entity type> monetaryItemType </entity type> <context> AEP affiliates contributed $ 379 thousand, $ 396 thousand and $ 329 thousand to the United Mine Workers of America 1974 Pension Plan for the years ended December 31, 2024, 2023 and 2022, respectively. The contributions did not include...
us-gaap:MultiemployerPlanEmployerContributionCost
AEP affiliates contributed $ 379 thousand, $ 396 thousand and $ 329 thousand to the United Mine Workers of America 1974 Pension Plan for the years ended December 31, 2024, 2023 and 2022, respectively. The contributions did not include surcharges. An AEP affiliate, Cook Coal Terminal (CCT), was listed in the plan’s 20...
text
329
monetaryItemType
text: <entity> 329 </entity> <entity type> monetaryItemType </entity type> <context> AEP affiliates contributed $ 379 thousand, $ 396 thousand and $ 329 thousand to the United Mine Workers of America 1974 Pension Plan for the years ended December 31, 2024, 2023 and 2022, respectively. The contributions did not include...
us-gaap:MultiemployerPlanEmployerContributionCost
AEPTCo Parent is the holding company of seven FERC-regulated transmission-only electric utilities. The seven State Transcos have been identified as operating segments of AEPTCo under the accounting guidance for “Segment Reporting.” The State Transcos business consists of developing, constructing and operating transmi...
text
seven
integerItemType
text: <entity> seven </entity> <entity type> integerItemType </entity type> <context> AEPTCo Parent is the holding company of seven FERC-regulated transmission-only electric utilities. The seven State Transcos have been identified as operating segments of AEPTCo under the accounting guidance for “Segment Reporting.” ...
us-gaap:NumberOfOperatingSegments
who makes operating decisions, allocates resources to and assesses performance based on these operating segments. The State Transcos operating segments all have similar economic characteristics and meet all of the criteria under the accounting guidance for “Segment Reporting” to be aggregated into one reportable segme...
text
one
integerItemType
text: <entity> one </entity> <entity type> integerItemType </entity type> <context> who makes operating decisions, allocates resources to and assesses performance based on these operating segments. The State Transcos operating segments all have similar economic characteristics and meet all of the criteria under the ac...
us-gaap:NumberOfReportableSegments
According to the accounting guidance for “Derivatives and Hedging,” the Registrants reflect the fair values of derivative instruments subject to netting agreements with the same counterparty net of related cash collateral.  For certain risk management contracts, the Registrants are required to post or receive cash coll...
text
87
monetaryItemType
text: <entity> 87 </entity> <entity type> monetaryItemType </entity type> <context> According to the accounting guidance for “Derivatives and Hedging,” the Registrants reflect the fair values of derivative instruments subject to netting agreements with the same counterparty net of related cash collateral.  For certain ...
us-gaap:SecuritiesReceivedAsCollateral
According to the accounting guidance for “Derivatives and Hedging,” the Registrants reflect the fair values of derivative instruments subject to netting agreements with the same counterparty net of related cash collateral.  For certain risk management contracts, the Registrants are required to post or receive cash coll...
text
46
monetaryItemType
text: <entity> 46 </entity> <entity type> monetaryItemType </entity type> <context> According to the accounting guidance for “Derivatives and Hedging,” the Registrants reflect the fair values of derivative instruments subject to netting agreements with the same counterparty net of related cash collateral.  For certain ...
us-gaap:SecuritiesReceivedAsCollateral
Amounts include $( 22 ) million and $( 30 ) million as of December 31, 2024 and 2023, respectively, for the fair value hedge adjustment of hedged debt obligations for which hedge accounting has been discontinued.
text
22
monetaryItemType
text: <entity> 22 </entity> <entity type> monetaryItemType </entity type> <context> Amounts include $( 22 ) million and $( 30 ) million as of December 31, 2024 and 2023, respectively, for the fair value hedge adjustment of hedged debt obligations for which hedge accounting has been discontinued. </context>
us-gaap:HedgedLiabilityDiscontinuedFairValueHedgeCumulativeIncreaseDecrease
Amounts include $( 22 ) million and $( 30 ) million as of December 31, 2024 and 2023, respectively, for the fair value hedge adjustment of hedged debt obligations for which hedge accounting has been discontinued.
text
30
monetaryItemType
text: <entity> 30 </entity> <entity type> monetaryItemType </entity type> <context> Amounts include $( 22 ) million and $( 30 ) million as of December 31, 2024 and 2023, respectively, for the fair value hedge adjustment of hedged debt obligations for which hedge accounting has been discontinued. </context>
us-gaap:HedgedLiabilityDiscontinuedFairValueHedgeCumulativeIncreaseDecrease
As of December 31, 2024, AEP, OPCo, PSO, and SWEPCo have pretax state NOLC as indicated in the table below. Net of tax, the NOLCs for AEP and subsidiaries amount to $ 110.3 million of future tax benefit. Additionally, the amounts presented below for OPCo, PSO, and SWEPCo amount to $ 2.7 million, $ 27.8 million, and $ 3...
text
110.3
monetaryItemType
text: <entity> 110.3 </entity> <entity type> monetaryItemType </entity type> <context> As of December 31, 2024, AEP, OPCo, PSO, and SWEPCo have pretax state NOLC as indicated in the table below. Net of tax, the NOLCs for AEP and subsidiaries amount to $ 110.3 million of future tax benefit. Additionally, the amounts pre...
us-gaap:OperatingLossCarryforwards
As of December 31, 2024, AEP, OPCo, PSO, and SWEPCo have pretax state NOLC as indicated in the table below. Net of tax, the NOLCs for AEP and subsidiaries amount to $ 110.3 million of future tax benefit. Additionally, the amounts presented below for OPCo, PSO, and SWEPCo amount to $ 2.7 million, $ 27.8 million, and $ 3...
text
2.7
monetaryItemType
text: <entity> 2.7 </entity> <entity type> monetaryItemType </entity type> <context> As of December 31, 2024, AEP, OPCo, PSO, and SWEPCo have pretax state NOLC as indicated in the table below. Net of tax, the NOLCs for AEP and subsidiaries amount to $ 110.3 million of future tax benefit. Additionally, the amounts prese...
us-gaap:OperatingLossCarryforwards
As of December 31, 2024, AEP, OPCo, PSO, and SWEPCo have pretax state NOLC as indicated in the table below. Net of tax, the NOLCs for AEP and subsidiaries amount to $ 110.3 million of future tax benefit. Additionally, the amounts presented below for OPCo, PSO, and SWEPCo amount to $ 2.7 million, $ 27.8 million, and $ 3...
text
27.8
monetaryItemType
text: <entity> 27.8 </entity> <entity type> monetaryItemType </entity type> <context> As of December 31, 2024, AEP, OPCo, PSO, and SWEPCo have pretax state NOLC as indicated in the table below. Net of tax, the NOLCs for AEP and subsidiaries amount to $ 110.3 million of future tax benefit. Additionally, the amounts pres...
us-gaap:OperatingLossCarryforwards
As of December 31, 2024, AEP, OPCo, PSO, and SWEPCo have pretax state NOLC as indicated in the table below. Net of tax, the NOLCs for AEP and subsidiaries amount to $ 110.3 million of future tax benefit. Additionally, the amounts presented below for OPCo, PSO, and SWEPCo amount to $ 2.7 million, $ 27.8 million, and $ 3...
text
36.1
monetaryItemType
text: <entity> 36.1 </entity> <entity type> monetaryItemType </entity type> <context> As of December 31, 2024, AEP, OPCo, PSO, and SWEPCo have pretax state NOLC as indicated in the table below. Net of tax, the NOLCs for AEP and subsidiaries amount to $ 110.3 million of future tax benefit. Additionally, the amounts pres...
us-gaap:OperatingLossCarryforwards
, $ 13 million, and $ 23 million, respectively.
text
13
monetaryItemType
text: <entity> 13 </entity> <entity type> monetaryItemType </entity type> <context> , $ 13 million, and $ 23 million, respectively. </context>
us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
, $ 13 million, and $ 23 million, respectively.
text
23
monetaryItemType
text: <entity> 23 </entity> <entity type> monetaryItemType </entity type> <context> , $ 13 million, and $ 23 million, respectively. </context>
us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
These expenses were primarily included in Other Operation and Maintenance on the statements of income and Other Current Liabilities on the balance sheets. Settlement accounting was triggered for the qualified pension plan in November 2024 under the accounting guidance for “Compensation - Retirement Benefits”. A settl...
text
90
monetaryItemType
text: <entity> 90 </entity> <entity type> monetaryItemType </entity type> <context> These expenses were primarily included in Other Operation and Maintenance on the statements of income and Other Current Liabilities on the balance sheets. Settlement accounting was triggered for the qualified pension plan in November 2...
us-gaap:PostemploymentBenefitsPeriodExpense
In 2023, AEP filed a prospectus supplement and executed an Equity Distribution Agreement, pursuant to which AEP may sell, from time to time, up to an aggregate of $ 1.7 billion of its common stock through an ATM offering program, including an equity forward sales component. The compensation paid to the selling agents ...
text
4437136
sharesItemType
text: <entity> 4437136 </entity> <entity type> sharesItemType </entity type> <context> In 2023, AEP filed a prospectus supplement and executed an Equity Distribution Agreement, pursuant to which AEP may sell, from time to time, up to an aggregate of $ 1.7 billion of its common stock through an ATM offering program, inc...
us-gaap:StockIssuedDuringPeriodSharesNewIssues
In 2023, AEP filed a prospectus supplement and executed an Equity Distribution Agreement, pursuant to which AEP may sell, from time to time, up to an aggregate of $ 1.7 billion of its common stock through an ATM offering program, including an equity forward sales component. The compensation paid to the selling agents ...
text
397
monetaryItemType
text: <entity> 397 </entity> <entity type> monetaryItemType </entity type> <context> In 2023, AEP filed a prospectus supplement and executed an Equity Distribution Agreement, pursuant to which AEP may sell, from time to time, up to an aggregate of $ 1.7 billion of its common stock through an ATM offering program, inclu...
us-gaap:ProceedsFromIssuanceOfCommonStock
In 2023, AEP filed a prospectus supplement and executed an Equity Distribution Agreement, pursuant to which AEP may sell, from time to time, up to an aggregate of $ 1.7 billion of its common stock through an ATM offering program, including an equity forward sales component. The compensation paid to the selling agents ...
text
1.3
sharesItemType
text: <entity> 1.3 </entity> <entity type> sharesItemType </entity type> <context> In 2023, AEP filed a prospectus supplement and executed an Equity Distribution Agreement, pursuant to which AEP may sell, from time to time, up to an aggregate of $ 1.7 billion of its common stock through an ATM offering program, includi...
us-gaap:CommonStockCapitalSharesReservedForFutureIssuance
In January and February 2025, I&M retired $ 9 million and $ 4 million, respectively, of Notes Payable related to DCC Fuel.
text
9
monetaryItemType
text: <entity> 9 </entity> <entity type> monetaryItemType </entity type> <context> In January and February 2025, I&M retired $ 9 million and $ 4 million, respectively, of Notes Payable related to DCC Fuel. </context>
us-gaap:RepaymentsOfDebt
In January and February 2025, I&M retired $ 9 million and $ 4 million, respectively, of Notes Payable related to DCC Fuel.
text
4
monetaryItemType
text: <entity> 4 </entity> <entity type> monetaryItemType </entity type> <context> In January and February 2025, I&M retired $ 9 million and $ 4 million, respectively, of Notes Payable related to DCC Fuel. </context>
us-gaap:RepaymentsOfDebt
In January 2025, Transource Energy issued $ 2 million of variable rate Other Long-term Debt due in 2025.
text
2
monetaryItemType
text: <entity> 2 </entity> <entity type> monetaryItemType </entity type> <context> In January 2025, Transource Energy issued $ 2 million of variable rate Other Long-term Debt due in 2025. </context>
us-gaap:DebtInstrumentFaceAmount
In January 2025, KPCo entered into a $ 150 million term loan due in February 2026.
text
150
monetaryItemType
text: <entity> 150 </entity> <entity type> monetaryItemType </entity type> <context> In January 2025, KPCo entered into a $ 150 million term loan due in February 2026. </context>
us-gaap:DebtInstrumentFaceAmount
In February 2025, APCo retired $ 14 million of Securitization Bonds.
text
14
monetaryItemType
text: <entity> 14 </entity> <entity type> monetaryItemType </entity type> <context> In February 2025, APCo retired $ 14 million of Securitization Bonds. </context>
us-gaap:RepaymentsOfDebt
In February 2025, AEP Texas retired $ 12 million of Securitization Bonds.
text
12
monetaryItemType
text: <entity> 12 </entity> <entity type> monetaryItemType </entity type> <context> In February 2025, AEP Texas retired $ 12 million of Securitization Bonds. </context>
us-gaap:RepaymentsOfDebt
Pursuant to the leverage restrictions in credit agreements, AEP must maintain a percentage of debt-to-total capitalization at a level that does not exceed 67.5 %.  The method for calculating outstanding debt and capitalization is contractually-defined in the credit agreements.  AEP may not declare or pay any cash divid...
text
8.6
monetaryItemType
text: <entity> 8.6 </entity> <entity type> monetaryItemType </entity type> <context> Pursuant to the leverage restrictions in credit agreements, AEP must maintain a percentage of debt-to-total capitalization at a level that does not exceed 67.5 %.  The method for calculating outstanding debt and capitalization is contr...
us-gaap:RetainedEarningsUnappropriated
Pursuant to the leverage restrictions in credit agreements, AEP must maintain a percentage of debt-to-total capitalization at a level that does not exceed 67.5 %.  The method for calculating outstanding debt and capitalization is contractually-defined in the credit agreements.  AEP may not declare or pay any cash divid...
text
1.9
monetaryItemType
text: <entity> 1.9 </entity> <entity type> monetaryItemType </entity type> <context> Pursuant to the leverage restrictions in credit agreements, AEP must maintain a percentage of debt-to-total capitalization at a level that does not exceed 67.5 %.  The method for calculating outstanding debt and capitalization is contr...
us-gaap:PaymentsOfDividendsCommonStock
Pursuant to the leverage restrictions in credit agreements, AEP must maintain a percentage of debt-to-total capitalization at a level that does not exceed 67.5 %.  The method for calculating outstanding debt and capitalization is contractually-defined in the credit agreements.  AEP may not declare or pay any cash divid...
text
1.8
monetaryItemType
text: <entity> 1.8 </entity> <entity type> monetaryItemType </entity type> <context> Pursuant to the leverage restrictions in credit agreements, AEP must maintain a percentage of debt-to-total capitalization at a level that does not exceed 67.5 %.  The method for calculating outstanding debt and capitalization is contr...
us-gaap:PaymentsOfDividendsCommonStock
Pursuant to the leverage restrictions in credit agreements, AEP must maintain a percentage of debt-to-total capitalization at a level that does not exceed 67.5 %.  The method for calculating outstanding debt and capitalization is contractually-defined in the credit agreements.  AEP may not declare or pay any cash divid...
text
1.6
monetaryItemType
text: <entity> 1.6 </entity> <entity type> monetaryItemType </entity type> <context> Pursuant to the leverage restrictions in credit agreements, AEP must maintain a percentage of debt-to-total capitalization at a level that does not exceed 67.5 %.  The method for calculating outstanding debt and capitalization is contr...
us-gaap:PaymentsOfDividendsCommonStock
Securitized Debt for Receivables, for the year ended 2024, had a weighted-average interest rate of 5.39 % and a maximum amount outstanding of $ 900 million. The commercial paper program, for the year ended 2024, had a weighted-average yield of 5.39 % and a maximum amount outstanding of $ 2.9 billion. AEP’s outstanding...
text
5.39
percentItemType
text: <entity> 5.39 </entity> <entity type> percentItemType </entity type> <context> Securitized Debt for Receivables, for the year ended 2024, had a weighted-average interest rate of 5.39 % and a maximum amount outstanding of $ 900 million. The commercial paper program, for the year ended 2024, had a weighted-average...
us-gaap:DebtInstrumentInterestRateDuringPeriod
Securitized Debt for Receivables, for the year ended 2024, had a weighted-average interest rate of 5.39 % and a maximum amount outstanding of $ 900 million. The commercial paper program, for the year ended 2024, had a weighted-average yield of 5.39 % and a maximum amount outstanding of $ 2.9 billion. AEP’s outstanding...
text
900
monetaryItemType
text: <entity> 900 </entity> <entity type> monetaryItemType </entity type> <context> Securitized Debt for Receivables, for the year ended 2024, had a weighted-average interest rate of 5.39 % and a maximum amount outstanding of $ 900 million. The commercial paper program, for the year ended 2024, had a weighted-average...
us-gaap:TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount
Securitized Debt for Receivables, for the year ended 2024, had a weighted-average interest rate of 5.39 % and a maximum amount outstanding of $ 900 million. The commercial paper program, for the year ended 2024, had a weighted-average yield of 5.39 % and a maximum amount outstanding of $ 2.9 billion. AEP’s outstanding...
text
2.9
monetaryItemType
text: <entity> 2.9 </entity> <entity type> monetaryItemType </entity type> <context> Securitized Debt for Receivables, for the year ended 2024, had a weighted-average interest rate of 5.39 % and a maximum amount outstanding of $ 900 million. The commercial paper program, for the year ended 2024, had a weighted-average...
us-gaap:ShorttermDebtMaximumAmountOutstandingDuringPeriod
AEP’s long-term incentive plan available for eligible employees and directors, the American Electric Power System 2015 Long-Term Incentive Plan (2015 LTIP), was replaced prospectively for new grants by the American Electric Power System 2024 Long-Term Incentive Plan (2024 LTIP) effective in April 2024. The 2024 LTIP p...
text
10
sharesItemType
text: <entity> 10 </entity> <entity type> sharesItemType </entity type> <context> AEP’s long-term incentive plan available for eligible employees and directors, the American Electric Power System 2015 Long-Term Incentive Plan (2015 LTIP), was replaced prospectively for new grants by the American Electric Power System 2...
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
AEP’s long-term incentive plan available for eligible employees and directors, the American Electric Power System 2015 Long-Term Incentive Plan (2015 LTIP), was replaced prospectively for new grants by the American Electric Power System 2024 Long-Term Incentive Plan (2024 LTIP) effective in April 2024. The 2024 LTIP p...
text
9806016
sharesItemType
text: <entity> 9806016 </entity> <entity type> sharesItemType </entity type> <context> AEP’s long-term incentive plan available for eligible employees and directors, the American Electric Power System 2015 Long-Term Incentive Plan (2015 LTIP), was replaced prospectively for new grants by the American Electric Power Sys...
us-gaap:CommonStockCapitalSharesReservedForFutureIssuance
The total aggregate intrinsic value of nonvested RSUs as of December 31, 2024 was $ 44 million and the weighted-average remaining contractual life was 1.5 years.
text
44
monetaryItemType
text: <entity> 44 </entity> <entity type> monetaryItemType </entity type> <context> The total aggregate intrinsic value of nonvested RSUs as of December 31, 2024 was $ 44 million and the weighted-average remaining contractual life was 1.5 years. </context>
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested