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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 |
As of December 31, 2024, there was $ 59 million of total unrecognized compensation cost related to unvested share-based compensation arrangements granted under the 2015 LTIP and the 2024 LTIP. Unrecognized compensation cost related to unvested share-based arrangements will change as the fair value of performance share... | text | 59 | monetaryItemType | text: <entity> 59 </entity> <entity type> monetaryItemType </entity type> <context> As of December 31, 2024, there was $ 59 million of total unrecognized compensation cost related to unvested share-based compensation arrangements granted under the 2015 LTIP and the 2024 LTIP. Unrecognized compensation cost related to ... | us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized |
A UPA between AEGCo and I&M (the I&M Power Agreement) provides for the sale by AEGCo to I&M of all the energy and capacity available to AEGCo at the Rockport Plant unless it is sold to another utility. I&M is obligated, whether or not power is available from AEGCo, to pay as a demand charge for the right to receive su... | text | 209 | monetaryItemType | text: <entity> 209 </entity> <entity type> monetaryItemType </entity type> <context> A UPA between AEGCo and I&M (the I&M Power Agreement) provides for the sale by AEGCo to I&M of all the energy and capacity available to AEGCo at the Rockport Plant unless it is sold to another utility. I&M is obligated, whether or not... | us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty |
A UPA between AEGCo and I&M (the I&M Power Agreement) provides for the sale by AEGCo to I&M of all the energy and capacity available to AEGCo at the Rockport Plant unless it is sold to another utility. I&M is obligated, whether or not power is available from AEGCo, to pay as a demand charge for the right to receive su... | text | 181 | monetaryItemType | text: <entity> 181 </entity> <entity type> monetaryItemType </entity type> <context> A UPA between AEGCo and I&M (the I&M Power Agreement) provides for the sale by AEGCo to I&M of all the energy and capacity available to AEGCo at the Rockport Plant unless it is sold to another utility. I&M is obligated, whether or not... | us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty |
A UPA between AEGCo and I&M (the I&M Power Agreement) provides for the sale by AEGCo to I&M of all the energy and capacity available to AEGCo at the Rockport Plant unless it is sold to another utility. I&M is obligated, whether or not power is available from AEGCo, to pay as a demand charge for the right to receive su... | text | 242 | monetaryItemType | text: <entity> 242 </entity> <entity type> monetaryItemType </entity type> <context> A UPA between AEGCo and I&M (the I&M Power Agreement) provides for the sale by AEGCo to I&M of all the energy and capacity available to AEGCo at the Rockport Plant unless it is sold to another utility. I&M is obligated, whether or not... | us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty |
In connection with OPCo’s June 2012 - May 2015 ESP, the PUCO ordered OPCo to conduct energy and capacity auctions for its entire SSO load for delivery beginning in June 2015. AEP Energy and AEPEP participate in the auction process and have been awarded tranches of OPCo’s SSO load. OPCo’s auction purchases were $ 98 m... | text | 98 | monetaryItemType | text: <entity> 98 </entity> <entity type> monetaryItemType </entity type> <context> In connection with OPCo’s June 2012 - May 2015 ESP, the PUCO ordered OPCo to conduct energy and capacity auctions for its entire SSO load for delivery beginning in June 2015. AEP Energy and AEPEP participate in the auction process and ... | us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty |
In connection with OPCo’s June 2012 - May 2015 ESP, the PUCO ordered OPCo to conduct energy and capacity auctions for its entire SSO load for delivery beginning in June 2015. AEP Energy and AEPEP participate in the auction process and have been awarded tranches of OPCo’s SSO load. OPCo’s auction purchases were $ 98 m... | text | 87 | monetaryItemType | text: <entity> 87 </entity> <entity type> monetaryItemType </entity type> <context> In connection with OPCo’s June 2012 - May 2015 ESP, the PUCO ordered OPCo to conduct energy and capacity auctions for its entire SSO load for delivery beginning in June 2015. AEP Energy and AEPEP participate in the auction process and ... | us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty |
In connection with OPCo’s June 2012 - May 2015 ESP, the PUCO ordered OPCo to conduct energy and capacity auctions for its entire SSO load for delivery beginning in June 2015. AEP Energy and AEPEP participate in the auction process and have been awarded tranches of OPCo’s SSO load. OPCo’s auction purchases were $ 98 m... | text | 10 | monetaryItemType | text: <entity> 10 </entity> <entity type> monetaryItemType </entity type> <context> In connection with OPCo’s June 2012 - May 2015 ESP, the PUCO ordered OPCo to conduct energy and capacity auctions for its entire SSO load for delivery beginning in June 2015. AEP Energy and AEPEP participate in the auction process and ... | us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty |
Certain AEP subsidiaries had affiliated sales and purchases of electric property individually amounting to $ 100 thousand or more, sales and purchases of meters and transformers, and sales and purchases of transmission property. There were no gains or losses recorded on the transactions and the net book value of all s... | text | 100 | monetaryItemType | text: <entity> 100 </entity> <entity type> monetaryItemType </entity type> <context> Certain AEP subsidiaries had affiliated sales and purchases of electric property individually amounting to $ 100 thousand or more, sales and purchases of meters and transformers, and sales and purchases of transmission property. There... | us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty |
For the years ended December 31, 2023 and 2022, AEP made contributions of $ 0.1 million and $ 0.2 million, respectively, to Clean Affordable Reliable Coalition (CARE), a 501(c)(6) organization established to encourage communication, discussion and concerted action related to tax policy associated with clean, affordable... | text | 0.1 | monetaryItemType | text: <entity> 0.1 </entity> <entity type> monetaryItemType </entity type> <context> For the years ended December 31, 2023 and 2022, AEP made contributions of $ 0.1 million and $ 0.2 million, respectively, to Clean Affordable Reliable Coalition (CARE), a 501(c)(6) organization established to encourage communication, di... | us-gaap:RelatedPartyTransactionAmountsOfTransaction |
For the years ended December 31, 2023 and 2022, AEP made contributions of $ 0.1 million and $ 0.2 million, respectively, to Clean Affordable Reliable Coalition (CARE), a 501(c)(6) organization established to encourage communication, discussion and concerted action related to tax policy associated with clean, affordable... | text | 0.2 | monetaryItemType | text: <entity> 0.2 </entity> <entity type> monetaryItemType </entity type> <context> For the years ended December 31, 2023 and 2022, AEP made contributions of $ 0.1 million and $ 0.2 million, respectively, to Clean Affordable Reliable Coalition (CARE), a 501(c)(6) organization established to encourage communication, di... | us-gaap:RelatedPartyTransactionAmountsOfTransaction |
For the years ended December 31, 2023 and 2022, AEP made contributions of $ 0.1 million and $ 0.2 million, respectively, to Clean Affordable Reliable Coalition (CARE), a 501(c)(6) organization established to encourage communication, discussion and concerted action related to tax policy associated with clean, affordable... | text | no | monetaryItemType | text: <entity> no </entity> <entity type> monetaryItemType </entity type> <context> For the years ended December 31, 2023 and 2022, AEP made contributions of $ 0.1 million and $ 0.2 million, respectively, to Clean Affordable Reliable Coalition (CARE), a 501(c)(6) organization established to encourage communication, dis... | us-gaap:RelatedPartyTransactionAmountsOfTransaction |
Beginning in August 2024, an officer of AEP also served as a member of the board of directors of a company that is a vendor of certain AEP subsidiaries. From August 2024 through December 2024, AEP purchased $ 44 million of distribution and transmission infrastructure services from the related party vendor in the ordin... | text | 44 | monetaryItemType | text: <entity> 44 </entity> <entity type> monetaryItemType </entity type> <context> Beginning in August 2024, an officer of AEP also served as a member of the board of directors of a company that is a vendor of certain AEP subsidiaries. From August 2024 through December 2024, AEP purchased $ 44 million of distribution... | us-gaap:RelatedPartyTransactionAmountsOfTransaction |
Beginning in August 2024, an officer of AEP also served as a member of the board of directors of a company that is a vendor of certain AEP subsidiaries. From August 2024 through December 2024, AEP purchased $ 44 million of distribution and transmission infrastructure services from the related party vendor in the ordin... | text | 25 | monetaryItemType | text: <entity> 25 </entity> <entity type> monetaryItemType </entity type> <context> Beginning in August 2024, an officer of AEP also served as a member of the board of directors of a company that is a vendor of certain AEP subsidiaries. From August 2024 through December 2024, AEP purchased $ 44 million of distribution... | us-gaap:RelatedPartyTransactionAmountsOfTransaction |
Beginning in August 2024, an officer of AEP also served as a member of the board of directors of a company that is a vendor of certain AEP subsidiaries. From August 2024 through December 2024, AEP purchased $ 44 million of distribution and transmission infrastructure services from the related party vendor in the ordin... | text | 13 | monetaryItemType | text: <entity> 13 </entity> <entity type> monetaryItemType </entity type> <context> Beginning in August 2024, an officer of AEP also served as a member of the board of directors of a company that is a vendor of certain AEP subsidiaries. From August 2024 through December 2024, AEP purchased $ 44 million of distribution... | us-gaap:RelatedPartyTransactionAmountsOfTransaction |
See Note 7 - Acquisitions, Dispositions and Impairments for additional information related to the disposal of the 50 % interests in Fowler Ridge 2 which was included in the August 2023 sale of the Competitive Contracted Renewables Portfolio and Flat Ridge 2 which was sold in November 2022. | text | 50 | percentItemType | text: <entity> 50 </entity> <entity type> percentItemType </entity type> <context> See Note 7 - Acquisitions, Dispositions and Impairments for additional information related to the disposal of the 50 % interests in Fowler Ridge 2 which was included in the August 2023 sale of the Competitive Contracted Renewables Portfo... | us-gaap:EquityMethodInvestmentOwnershipPercentage |
$ 100 million. Actual costs may vary due to inflation and changes in reclamation scope. SWEPCo recovers these costs through its fuel clauses. As of December 31, 2024, SWEPCo has recorded an ARO of $ 96 million and has paid or accrued $ 77 million for reclamation costs billed by Sabine. To date, SWEPCo has collected... | text | 100 | monetaryItemType | text: <entity> 100 </entity> <entity type> monetaryItemType </entity type> <context> $ 100 million. Actual costs may vary due to inflation and changes in reclamation scope. SWEPCo recovers these costs through its fuel clauses. As of December 31, 2024, SWEPCo has recorded an ARO of $ 96 million and has paid or accrue... | us-gaap:MineReclamationAndClosingLiabilityNoncurrent |
$ 100 million. Actual costs may vary due to inflation and changes in reclamation scope. SWEPCo recovers these costs through its fuel clauses. As of December 31, 2024, SWEPCo has recorded an ARO of $ 96 million and has paid or accrued $ 77 million for reclamation costs billed by Sabine. To date, SWEPCo has collected... | text | 77 | monetaryItemType | text: <entity> 77 </entity> <entity type> monetaryItemType </entity type> <context> $ 100 million. Actual costs may vary due to inflation and changes in reclamation scope. SWEPCo recovers these costs through its fuel clauses. As of December 31, 2024, SWEPCo has recorded an ARO of $ 96 million and has paid or accrued... | us-gaap:AccountsPayableCurrent |
Transition Funding was formed for the sole purpose of issuing and servicing securitization bonds related to restructuring legislation in Texas. Management concluded that AEP Texas is the primary beneficiary of Transition Funding because AEP Texas has the power to direct the most significant activities of the VIE and A... | text | 72 | monetaryItemType | text: <entity> 72 </entity> <entity type> monetaryItemType </entity type> <context> Transition Funding was formed for the sole purpose of issuing and servicing securitization bonds related to restructuring legislation in Texas. Management concluded that AEP Texas is the primary beneficiary of Transition Funding becaus... | us-gaap:SecuredDebt |
Transition Funding was formed for the sole purpose of issuing and servicing securitization bonds related to restructuring legislation in Texas. Management concluded that AEP Texas is the primary beneficiary of Transition Funding because AEP Texas has the power to direct the most significant activities of the VIE and A... | text | 64 | monetaryItemType | text: <entity> 64 </entity> <entity type> monetaryItemType </entity type> <context> Transition Funding was formed for the sole purpose of issuing and servicing securitization bonds related to restructuring legislation in Texas. Management concluded that AEP Texas is the primary beneficiary of Transition Funding becaus... | us-gaap:SecuritizedRegulatoryTransitionAssetsNoncurrent |
Restoration Funding was formed for the sole purpose of issuing and servicing securitization bonds related to storm restoration of AEP Texas’ distribution system primarily due to damage caused by Hurricane Harvey. Management concluded that AEP Texas is the primary beneficiary of Restoration Funding because AEP Texas ha... | text | 24 | monetaryItemType | text: <entity> 24 </entity> <entity type> monetaryItemType </entity type> <context> Restoration Funding was formed for the sole purpose of issuing and servicing securitization bonds related to storm restoration of AEP Texas’ distribution system primarily due to damage caused by Hurricane Harvey. Management concluded t... | us-gaap:SecuredDebt |
$ 102 million and $ 126 million were included in Long-term Debt - Nonaffiliated, respectively, on the balance sheets. Restoration Funding’s securitized assets were $ 117 million and $ 139 million as of December 31, 2024 and 2023, respectively, which are presented separately on the face of the balance sheets. | text | 102 | monetaryItemType | text: <entity> 102 </entity> <entity type> monetaryItemType </entity type> <context> $ 102 million and $ 126 million were included in Long-term Debt - Nonaffiliated, respectively, on the balance sheets. Restoration Funding’s securitized assets were $ 117 million and $ 139 million as of December 31, 2024 and 2023, resp... | us-gaap:SecuredDebt |
$ 102 million and $ 126 million were included in Long-term Debt - Nonaffiliated, respectively, on the balance sheets. Restoration Funding’s securitized assets were $ 117 million and $ 139 million as of December 31, 2024 and 2023, respectively, which are presented separately on the face of the balance sheets. | text | 126 | monetaryItemType | text: <entity> 126 </entity> <entity type> monetaryItemType </entity type> <context> $ 102 million and $ 126 million were included in Long-term Debt - Nonaffiliated, respectively, on the balance sheets. Restoration Funding’s securitized assets were $ 117 million and $ 139 million as of December 31, 2024 and 2023, resp... | us-gaap:SecuredDebt |
$ 102 million and $ 126 million were included in Long-term Debt - Nonaffiliated, respectively, on the balance sheets. Restoration Funding’s securitized assets were $ 117 million and $ 139 million as of December 31, 2024 and 2023, respectively, which are presented separately on the face of the balance sheets. | text | 117 | monetaryItemType | text: <entity> 117 </entity> <entity type> monetaryItemType </entity type> <context> $ 102 million and $ 126 million were included in Long-term Debt - Nonaffiliated, respectively, on the balance sheets. Restoration Funding’s securitized assets were $ 117 million and $ 139 million as of December 31, 2024 and 2023, resp... | us-gaap:SecuritizedRegulatoryTransitionAssetsNoncurrent |
$ 102 million and $ 126 million were included in Long-term Debt - Nonaffiliated, respectively, on the balance sheets. Restoration Funding’s securitized assets were $ 117 million and $ 139 million as of December 31, 2024 and 2023, respectively, which are presented separately on the face of the balance sheets. | text | 139 | monetaryItemType | text: <entity> 139 </entity> <entity type> monetaryItemType </entity type> <context> $ 102 million and $ 126 million were included in Long-term Debt - Nonaffiliated, respectively, on the balance sheets. Restoration Funding’s securitized assets were $ 117 million and $ 139 million as of December 31, 2024 and 2023, resp... | us-gaap:SecuritizedRegulatoryTransitionAssetsNoncurrent |
Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary of Appalachian Consumer Rate Relief Funding because APCo has the power to direct the ... | text | 28 | monetaryItemType | text: <entity> 28 </entity> <entity type> monetaryItemType </entity type> <context> Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary o... | us-gaap:SecuredDebt |
Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary of Appalachian Consumer Rate Relief Funding because APCo has the power to direct the ... | text | 27 | monetaryItemType | text: <entity> 27 </entity> <entity type> monetaryItemType </entity type> <context> Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary o... | us-gaap:SecuredDebt |
Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary of Appalachian Consumer Rate Relief Funding because APCo has the power to direct the ... | text | 91 | monetaryItemType | text: <entity> 91 </entity> <entity type> monetaryItemType </entity type> <context> Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary o... | us-gaap:SecuredDebt |
Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary of Appalachian Consumer Rate Relief Funding because APCo has the power to direct the ... | text | 120 | monetaryItemType | text: <entity> 120 </entity> <entity type> monetaryItemType </entity type> <context> Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary ... | us-gaap:SecuredDebt |
Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary of Appalachian Consumer Rate Relief Funding because APCo has the power to direct the ... | text | 106 | monetaryItemType | text: <entity> 106 </entity> <entity type> monetaryItemType </entity type> <context> Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary ... | us-gaap:SecuritizedRegulatoryTransitionAssetsNoncurrent |
Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary of Appalachian Consumer Rate Relief Funding because APCo has the power to direct the ... | text | 133 | monetaryItemType | text: <entity> 133 </entity> <entity type> monetaryItemType </entity type> <context> Appalachian Consumer Rate Relief Funding was formed for the sole purpose of issuing and servicing securitization bonds related to APCo’s under-recovered ENEC deferral balance. Management concluded that APCo is the primary beneficiary ... | us-gaap:SecuritizedRegulatoryTransitionAssetsNoncurrent |
In August 2024, Storm Recovery Funding was formed for the sole purpose of issuing and servicing securitization bonds related to storm recovery primarily related to SWEPCo’s distribution system. Management concluded that SWEPCo is the primary beneficiary of Storm Recovery Funding because SWEPCo has the power to direct ... | text | 23 | monetaryItemType | text: <entity> 23 </entity> <entity type> monetaryItemType </entity type> <context> In August 2024, Storm Recovery Funding was formed for the sole purpose of issuing and servicing securitization bonds related to storm recovery primarily related to SWEPCo’s distribution system. Management concluded that SWEPCo is the p... | us-gaap:SecuredDebt |
AEGCo, a wholly-owned subsidiary of Parent, is consolidated by AEP. AEGCo owns a 50 % ownership interest in Rockport Plant, Units 1 and 2. AEGCo sells its portion of the output from the Rockport Plant to I&M. AEP has agreed to provide AEGCo with the funds necessary to satisfy all the debt obligations of AEGCo. I&M ... | text | 50 | percentItemType | text: <entity> 50 </entity> <entity type> percentItemType </entity type> <context> AEGCo, a wholly-owned subsidiary of Parent, is consolidated by AEP. AEGCo owns a 50 % ownership interest in Rockport Plant, Units 1 and 2. AEGCo sells its portion of the output from the Rockport Plant to I&M. AEP has agreed to provide... | us-gaap:JointlyOwnedUtilityPlantProportionateOwnershipShare |
$ 14 million and $ 15 million, respectively. Management estimates the maximum exposure of loss to be equal to the amount of such liabilities. | text | 14 | monetaryItemType | text: <entity> 14 </entity> <entity type> monetaryItemType </entity type> <context> $ 14 million and $ 15 million, respectively. Management estimates the maximum exposure of loss to be equal to the amount of such liabilities. </context> | us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |
$ 14 million and $ 15 million, respectively. Management estimates the maximum exposure of loss to be equal to the amount of such liabilities. | text | 15 | monetaryItemType | text: <entity> 15 </entity> <entity type> monetaryItemType </entity type> <context> $ 14 million and $ 15 million, respectively. Management estimates the maximum exposure of loss to be equal to the amount of such liabilities. </context> | us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |
Devco is a VIE because its operations and activities, including the initial 100 MWs purchase of fuel cells from Bloom Energy, are entirely financed by Parent through borrowings from the Nonutility Money Pool. Parent controls the significant activities of Devco and is exposed to its potential losses to the extent sales... | text | 457 | monetaryItemType | text: <entity> 457 </entity> <entity type> monetaryItemType </entity type> <context> Devco is a VIE because its operations and activities, including the initial 100 MWs purchase of fuel cells from Bloom Energy, are entirely financed by Parent through borrowings from the Nonutility Money Pool. Parent controls the signi... | us-gaap:ConstructionInProgressGross |
DHLC is a mining operator which previously sold 50 % of the lignite produced to SWEPCo and 50 % to CLECO. The operations of DHLC are governed by the lignite mining agreement among SWEPCo, CLECO and DHLC. SWEPCo and CLECO share the executive board seats and voting rights equally. In accordance with the lignite mining... | text | 1 | monetaryItemType | text: <entity> 1 </entity> <entity type> monetaryItemType </entity type> <context> DHLC is a mining operator which previously sold 50 % of the lignite produced to SWEPCo and 50 % to CLECO. The operations of DHLC are governed by the lignite mining agreement among SWEPCo, CLECO and DHLC. SWEPCo and CLECO share the exec... | us-gaap:Dividends |
DHLC is a mining operator which previously sold 50 % of the lignite produced to SWEPCo and 50 % to CLECO. The operations of DHLC are governed by the lignite mining agreement among SWEPCo, CLECO and DHLC. SWEPCo and CLECO share the executive board seats and voting rights equally. In accordance with the lignite mining... | text | 25 | monetaryItemType | text: <entity> 25 </entity> <entity type> monetaryItemType </entity type> <context> DHLC is a mining operator which previously sold 50 % of the lignite produced to SWEPCo and 50 % to CLECO. The operations of DHLC are governed by the lignite mining agreement among SWEPCo, CLECO and DHLC. SWEPCo and CLECO share the exe... | us-gaap:Dividends |
ETT designs, acquires, constructs, owns and operates certain transmission facilities in ERCOT. BHE, a nonaffiliated entity, holds a 50 % membership interest in ETT and AEP Transmission Holdco holds a 50 % membership interest in ETT. As a result, AEP, through its wholly-owned subsidiary, holds a 50 % membership intere... | text | 50 | percentItemType | text: <entity> 50 </entity> <entity type> percentItemType </entity type> <context> ETT designs, acquires, constructs, owns and operates certain transmission facilities in ERCOT. BHE, a nonaffiliated entity, holds a 50 % membership interest in ETT and AEP Transmission Holdco holds a 50 % membership interest in ETT. As... | us-gaap:EquityMethodInvestmentOwnershipPercentage |
and $ 811 million, respectively. AEP’s equity earnings associated with ET | text | 811 | monetaryItemType | text: <entity> 811 </entity> <entity type> monetaryItemType </entity type> <context> and $ 811 million, respectively. AEP’s equity earnings associated with ET </context> | us-gaap:EquityMethodInvestments |
$ 86 million, $ 74 million and $ 74 million for the years ended December 31, 2024, 2023 and 2022, respectively. | text | 86 | monetaryItemType | text: <entity> 86 </entity> <entity type> monetaryItemType </entity type> <context> $ 86 million, $ 74 million and $ 74 million for the years ended December 31, 2024, 2023 and 2022, respectively. </context> | us-gaap:IncomeLossFromEquityMethodInvestments |
$ 86 million, $ 74 million and $ 74 million for the years ended December 31, 2024, 2023 and 2022, respectively. | text | 74 | monetaryItemType | text: <entity> 74 </entity> <entity type> monetaryItemType </entity type> <context> $ 86 million, $ 74 million and $ 74 million for the years ended December 31, 2024, 2023 and 2022, respectively. </context> | us-gaap:IncomeLossFromEquityMethodInvestments |
(a) I&M's annual composite depreciation rate for Generation property is 1.8 % and the depreciable life is 39 years. | text | 1.8 | percentItemType | text: <entity> 1.8 </entity> <entity type> percentItemType </entity type> <context> (a) I&M's annual composite depreciation rate for Generation property is 1.8 % and the depreciable life is 39 years. </context> | us-gaap:PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService |
In April 2024, the Federal EPA finalized revisions to the CCR Rule to expand the scope of the rule to include inactive impoundments at inactive facilities as well as to establish requirements for currently exempt solid waste management units that involve the direct placement of CCR on the land. In the second quarter o... | text | 602 | monetaryItemType | text: <entity> 602 </entity> <entity type> monetaryItemType </entity type> <context> In April 2024, the Federal EPA finalized revisions to the CCR Rule to expand the scope of the rule to include inactive impoundments at inactive facilities as well as to establish requirements for currently exempt solid waste management... | us-gaap:AssetRetirementObligationLiabilitiesIncurred |
In April 2024, the Federal EPA finalized revisions to the CCR Rule to expand the scope of the rule to include inactive impoundments at inactive facilities as well as to establish requirements for currently exempt solid waste management units that involve the direct placement of CCR on the land. In the second quarter o... | text | 72 | monetaryItemType | text: <entity> 72 </entity> <entity type> monetaryItemType </entity type> <context> In April 2024, the Federal EPA finalized revisions to the CCR Rule to expand the scope of the rule to include inactive impoundments at inactive facilities as well as to establish requirements for currently exempt solid waste management ... | us-gaap:AssetRetirementObligationRevisionOfEstimate |
In December 2024, I&M recorded a $ 176 million revision as a result of the completion of the latest Cook Plant nuclear decommissioning study. I&M's ARO related to nuclear decommissioning costs for the Cook Plant was $ 1.97 billion and $ 2.11 billion as of December 31, 2024 and 2023. As of December 31, 2024 and 2023, ... | text | 1.97 | monetaryItemType | text: <entity> 1.97 </entity> <entity type> monetaryItemType </entity type> <context> In December 2024, I&M recorded a $ 176 million revision as a result of the completion of the latest Cook Plant nuclear decommissioning study. I&M's ARO related to nuclear decommissioning costs for the Cook Plant was $ 1.97 billion an... | us-gaap:DecommissioningLiabilityNoncurrent |
In December 2024, I&M recorded a $ 176 million revision as a result of the completion of the latest Cook Plant nuclear decommissioning study. I&M's ARO related to nuclear decommissioning costs for the Cook Plant was $ 1.97 billion and $ 2.11 billion as of December 31, 2024 and 2023. As of December 31, 2024 and 2023, ... | text | 2.11 | monetaryItemType | text: <entity> 2.11 </entity> <entity type> monetaryItemType </entity type> <context> In December 2024, I&M recorded a $ 176 million revision as a result of the completion of the latest Cook Plant nuclear decommissioning study. I&M's ARO related to nuclear decommissioning costs for the Cook Plant was $ 1.97 billion an... | us-gaap:DecommissioningLiabilityNoncurrent |
In December 2024, I&M recorded a $ 176 million revision as a result of the completion of the latest Cook Plant nuclear decommissioning study. I&M's ARO related to nuclear decommissioning costs for the Cook Plant was $ 1.97 billion and $ 2.11 billion as of December 31, 2024 and 2023. As of December 31, 2024 and 2023, ... | text | 4.03 | monetaryItemType | text: <entity> 4.03 </entity> <entity type> monetaryItemType </entity type> <context> In December 2024, I&M recorded a $ 176 million revision as a result of the completion of the latest Cook Plant nuclear decommissioning study. I&M's ARO related to nuclear decommissioning costs for the Cook Plant was $ 1.97 billion an... | us-gaap:AssetRetirementObligationLegallyRestrictedAssetsFairValue |
In December 2024, I&M recorded a $ 176 million revision as a result of the completion of the latest Cook Plant nuclear decommissioning study. I&M's ARO related to nuclear decommissioning costs for the Cook Plant was $ 1.97 billion and $ 2.11 billion as of December 31, 2024 and 2023. As of December 31, 2024 and 2023, ... | text | 3.51 | monetaryItemType | text: <entity> 3.51 </entity> <entity type> monetaryItemType </entity type> <context> In December 2024, I&M recorded a $ 176 million revision as a result of the completion of the latest Cook Plant nuclear decommissioning study. I&M's ARO related to nuclear decommissioning costs for the Cook Plant was $ 1.97 billion an... | us-gaap:AssetRetirementObligationLegallyRestrictedAssetsFairValue |
Amounts include affiliated and nonaffiliated revenues. The affiliated revenue for AEP Transmission Holdco was $ 1.6 billion and Vertically Integrated Utilities was $ 177 million. The remaining affiliated amounts were immaterial. | text | 1.6 | monetaryItemType | text: <entity> 1.6 </entity> <entity type> monetaryItemType </entity type> <context> Amounts include affiliated and nonaffiliated revenues. The affiliated revenue for AEP Transmission Holdco was $ 1.6 billion and Vertically Integrated Utilities was $ 177 million. The remaining affiliated amounts were immaterial. </co... | us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax |
Amounts include affiliated and nonaffiliated revenues. The affiliated revenue for AEP Transmission Holdco was $ 1.6 billion and Vertically Integrated Utilities was $ 177 million. The remaining affiliated amounts were immaterial. | text | 177 | monetaryItemType | text: <entity> 177 </entity> <entity type> monetaryItemType </entity type> <context> Amounts include affiliated and nonaffiliated revenues. The affiliated revenue for AEP Transmission Holdco was $ 1.6 billion and Vertically Integrated Utilities was $ 177 million. The remaining affiliated amounts were immaterial. </co... | us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax |
Amounts include affiliated and nonaffiliated revenues. The affiliated revenue for Generation & Marketing was $ 96 million. The remaining affiliated amounts were immaterial. | text | 96 | monetaryItemType | text: <entity> 96 </entity> <entity type> monetaryItemType </entity type> <context> Amounts include affiliated and nonaffiliated revenues. The affiliated revenue for Generation & Marketing was $ 96 million. The remaining affiliated amounts were immaterial. </context> | us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax |
Amounts include affiliated and nonaffiliated revenues. The affiliated revenue for Corporate and Other was $ 137 million. The remaining affiliated amounts were immaterial. | text | 137 | monetaryItemType | text: <entity> 137 </entity> <entity type> monetaryItemType </entity type> <context> Amounts include affiliated and nonaffiliated revenues. The affiliated revenue for Corporate and Other was $ 137 million. The remaining affiliated amounts were immaterial. </context> | us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax |
Amounts include affiliated and nonaffiliated revenues. The affiliated revenue for AEP Transmission Holdco was $ 1.5 billion and Vertically Integrated Utilities was $ 205 million. The remaining affiliated amounts were immaterial. | text | 1.5 | monetaryItemType | text: <entity> 1.5 </entity> <entity type> monetaryItemType </entity type> <context> Amounts include affiliated and nonaffiliated revenues. The affiliated revenue for AEP Transmission Holdco was $ 1.5 billion and Vertically Integrated Utilities was $ 205 million. The remaining affiliated amounts were immaterial. </co... | us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax |
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