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Disclosure - Variable Interest Entities (Details) Sheet http://www.aep.com/role/VariableInterestEntitiesDetails Variable Interest Entities (Details) Details http://www.aep.com/role/VariableInterestEntitiesTables 54 false false R55.htm 0000060 - Disclosure - Revenue from Contracts with Customers (Details) Sheet http://www.aep.com/role/RevenuefromContractswithCustomersDetails Revenue from Contracts with Customers (Details) Details http://www.aep.com/role/RevenuefromContractswithCustomersTables 55 false false All Reports Book All Reports [dq-0542-Deprecated-Concept] Concept TreasuryStockShares in us-gaap/2022 used in 2 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept RevenueFromRelatedParties in us-gaap/2022 used in 44 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept DueFromRelatedPartiesCurrent in us-gaap/2022 used in 10 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept AccountsReceivableRelatedPartiesCurrent in us-gaap/2022 used in 28 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept DueToRelatedPartiesCurrent in us-gaap/2022 used in 14 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept AccountsPayableRelatedPartiesCurrent in us-gaap/2022 used in 14 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty in us-gaap/2022 used in 2 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept AvailableForSaleSecuritiesGrossUnrealizedGains in us-gaap/2022 used in 28 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept AvailableForSaleSecuritiesGrossUnrealizedLoss in us-gaap/2022 used in 28 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept ProceedsFromSaleOfAvailableForSaleSecurities in us-gaap/2022 used in 4 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept PaymentsToAcquireAvailableForSaleSecurities in us-gaap/2022 used in 4 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept AvailableForSaleSecuritiesGrossRealizedGainLossNet in us-gaap/2022 used in 4 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept AvailableForSaleSecuritiesGrossRealizedLosses in us-gaap/2022 used in 4 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [dq-0542-Deprecated-Concept] Concept RelatedPartyTransactionDueFromToRelatedParty in us-gaap/2022 used in 9 facts was deprecated in us-gaap/2023 as of 2023 and should not be used. aep-20230331.htm 4 [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 2 fact(s) appearing in ix:hidden were eligible for transformation: aep:CorporateUnitOwnershipShareOfAnEquityUnit, us-gaap:DeferredTaxAssetsGross - aep-20230331.htm 4 [dqc-0001-Axis-With-Inappropriate-Members] The fact us-gaap:PaymentsToAcquirePropertyPlantAndEquipment with a value of 145700000 is dimensionally qualified with the srt:ConsolidationItemsAxis and the unallowable member aep:RenewableEnergyFacilitiesMember. This extension member should not be used with this axis. The properties of this us-gaap:PaymentsToAcquirePropertyPlantAndEquipment fact are Context: idd27637383474d9aaa4bbfe3daa478ee_D20230101-20230331, Unit: usd, Rule Element Id: 70. aep-20230331.htm 4 [dqc-0001-Axis-With-Inappropriate-Members] The fact us-gaap:PaymentsToAcquirePropertyPlantAndEquipment with a value of 549300000 is dimensionally qualified with the srt:ConsolidationItemsAxis and the unallowable member aep:RenewableEnergyFacilitiesMember. This extension member should not be used with this axis. The properties of this us-gaap:PaymentsToAcquirePropertyPlantAndEquipment fact are Context: i513ac35ef8ce4b069cf34cfa2737f23b_D20220101-20220331, Unit: usd, Rule Element Id: 70. aep-20230331.htm 4 [dqc-0001-Axis-With-Inappropriate-Members] The fact us-gaap:AssetImpairmentCharges with a value of 112000000.0 is dimensionally qualified with the srt:ConsolidationItemsAxis and the unallowable member aep:CompetitiveContractedRenewablePortfolioMember. This extension member should not be used with this axis. The properties of this us-gaap:AssetImpairmentCharges fact are Context: i0c563c7cf3624ffaa37b33a23f0db013_D20230101-20230331, Unit: usd, Rule Element Id: 70. aep-20230331.htm 4 [dqc-0001-Axis-With-Inappropriate-Members] The fact us-gaap:AssetImpairmentCharges with a value of 0 is dimensionally qualified with the srt:ConsolidationItemsAxis and the unallowable member aep:CompetitiveContractedRenewablePortfolioMember. This extension member should not be used with this axis. The properties of this us-gaap:AssetImpairmentCharges fact are Context: i1dc9b28c90204ec7ab73fb2933973e16_D20220101-20220331, Unit: usd, Rule Element Id: 70. aep-20230331.htm 4 [dqc-0001-Axis-With-Inappropriate-Members] The fact us-gaap:PaymentsToAcquirePropertyPlantAndEquipment with a value of 1200000000 is dimensionally qualified with the srt:ConsolidationItemsAxis and the unallowable member aep:NorthCentralWindEnergyFacilitiesMember. This extension member should not be used with this axis. The properties of this us-gaap:PaymentsToAcquirePropertyPlantAndEquipment fact are Context: ia5e5de8a3f314e1798326c58beb11926_D20230101-20230331, Unit: usd, Rule Element Id: 70. aep-20230331.htm 4 [dqc-0001-Axis-With-Inappropriate-Members] The fact us-gaap:PaymentsToAcquirePropertyPlantAndEquipment with a value of 145700000 is dimensionally qualified with the srt:ConsolidationItemsAxis and the unallowable member aep:RenewableEnergyFacilitiesMember. This extension member should not be used with this axis. The properties of this us-gaap:PaymentsToAcquirePropertyPlantAndEquipment fact are Context: i9a2acf24c52d4c53a2c5d254174682cb_D20230101-20230331, Unit: usd, Rule Element Id: 70. aep-20230331.htm 4 [dqc-0001-Axis-With-Inappropriate-Members] The fact us-gaap:PaymentsToAcquirePropertyPlantAndEquipment with a value of 1207300000 is dimensionally qualified with the srt:ConsolidationItemsAxis and the unallowable member aep:RenewableEnergyFacilitiesMember. This extension member should not be used with this axis. The properties of this us-gaap:PaymentsToAcquirePropertyPlantAndEquipment fact are Context: if0ff0d4e90ad43948adb47caf145ddfe_D20220101-20220331, Unit: usd, Rule Element Id: 70. aep-20230331.htm 4 [dqc-0001-Axis-With-Inappropriate-Members] Member defined for the axis srt:ConsolidationItemsAxis was not reported with any fact: aep:CedarCreekProjectMember. Id: 70. aep-20230331.htm [dqc-0001-Axis-With-Inappropriate-Members] Member defined for the axis srt:ConsolidationItemsAxis was not reported with any fact: aep:FlatRidgeIIMember. Id: 70. aep-20230331.htm [dqc-0001-Axis-With-Inappropriate-Members] Member defined for the axis srt:ConsolidationItemsAxis was not reported with any fact: aep:KentuckyPowerCoMember. Id: 70. aep-20230331.htm [dqc-0001-Axis-With-Inappropriate-Members] Member defined for the axis srt:ConsolidationItemsAxis was not reported with any fact: aep:MineralRightsMember. Id: 70. aep-20230331.htm [dqc-0001-Axis-With-Inappropriate-Members] Member defined for the axis srt:ConsolidationItemsAxis was not reported with any fact: aep:RockFallsWindFacilityMember. Id: 70. aep-20230331.htm [dqc-0001-Axis-With-Inappropriate-Members] Member defined for the axis srt:ConsolidationItemsAxis was not reported with any fact: aep:DryLakeSolarProjectMember. Id: 70. aep-20230331.htm [dqc-0004-Element-Values-Are-Equal] Assets with a value of 15222200000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 1259600000 + 1583400000. These values should be equal. The properties of this Assets fact are Context: i86b178ef591f4b66a1fab495219e7678_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 10152700000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 430200000 + 915200000. These values should be equal. The properties of this Assets fact are Context: ib7adf04ab1f34f72a093151b6aa48c69_I20230331, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 443000000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 21300000 + 100000. These values should be equal. The properties of this Assets fact are Context: i1489c5cb619d4e1fa8ae4df36c464e72_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 12242300000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 571400000 + 4254000000. These values should be equal. The properties of this Assets fact are Context: iaaba65ff6b87447ca53d271617e7f653_I20230331, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 6965900000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 491500000 + 847900000. These values should be equal. The properties of this Assets fact are Context: idd7e4a12ed054c7a9dac0696559b7016_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 13814200000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 188700000 + 285600000. These values should be equal. The properties of this Assets fact are Context: i7ddff38dea974574980d8cd46fbb30f5_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 10003100000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 414400000 + 979400000. These values should be equal. The properties of this Assets fact are Context: i3fc340b22a0a4b8aad5d4973bc0610d8_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 12118900000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 571800000 + 4135600000. These values should be equal. The properties of this Assets fact are Context: i122c43fa90134cd0bcdbf2d4e2ea6ce8_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 146900000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 4000000 + 300000. These values should be equal. The properties of this Assets fact are Context: i022e74e76a524143a40b34527c1d7760_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 245500000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 108300000 + 130000000. These values should be equal. The properties of this Assets fact are Context: iffa8c705548d49c1b006ce0585f632c1_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 13272200000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 429100000 + 835100000. These values should be equal. The properties of this Assets fact are Context: i030d981375f14d3f83e782570019f2ed_I20230331, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 363300000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 90200000 + 94000000. These values should be equal. The properties of this Assets fact are Context: if00d2ab176624ace874b92a5de568aac_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 10396600000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 678500000 + 1375500000. These values should be equal. The properties of this Assets fact are Context: i4573209fb98343e587306f661ec00987_I20230331, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 94517900000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 7798200000 + 13372700000. These values should be equal. The properties of this Assets fact are Context: ib2708e4cc25b4770a1493751322e03aa_I20230331, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 524000000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 22100000 + 6800000. These values should be equal. The properties of this Assets fact are Context: i703c449bf7a140058c2b461c160eeebc_I20230331, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 508500000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 23500000 + 2700000. These values should be equal. The properties of this Assets fact are Context: if4e2730651fb470c9131bec7445b1df8_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 12892200000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 446900000 + 763700000. These values should be equal. The properties of this Assets fact are Context: i7cbeecd7edbf46bfbcd2ce550dc1f7e9_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 10378800000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 812200000 + 1304400000. These values should be equal. The properties of this Assets fact are Context: i3ec4c1c9db334e5bbcb39972532a0423_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 15256400000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 1299000000 + 1451300000. These values should be equal. The properties of this Assets fact are Context: idf9268a85997486c9e1b459d4d6cf504_I20230331, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 93403300000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 6775500000 + 13288700000. These values should be equal. The properties of this Assets fact are Context: i07cb7a5aa1904f7a974f478cbdc9887a_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 314600000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 84300000 + 76000000. These values should be equal. The properties of this Assets fact are Context: i9831f37913144d82ac53637a4250844a_I20230331, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 238400000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 8300000 + 13600000. These values should be equal. The properties of this Assets fact are Context: i77afc7b05c754539aa371af54643de39_I20221231, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 7164600000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 449300000 + 851000000. These values should be equal. The properties of this Assets fact are Context: i2d03cae51101473f91aa0e0ec9a249aa_I20230331, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0004-Element-Values-Are-Equal] Assets with a value of 14454700000 is not equal to the total of AssetsCurrent, AssetsNoncurrent with a value of 493300000 + 249400000. These values should be equal. The properties of this Assets fact are Context: i86c2f49c36a34bd7a5105187d5243ac3_I20230331, Unit: usd, Rule Element Id: 9280. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AmortizationOfDeferredPropertyTaxes has a value of -101600000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AmortizationOfDeferredPropertyTaxes fact are: Context: ia0e496fda8f54055baf9181f2b4e4654_D20230101-20230331, Unit: usd, Rule Element Id: 3489. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AmortizationOfDeferredPropertyTaxes has a value of -82000000.0 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AmortizationOfDeferredPropertyTaxes fact are: Context: i4eca684083ae4d5fbdba2de77f9fa11c_D20220101-20220331, Unit: usd, Rule Element Id: 3489. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AmortizationOfDeferredPropertyTaxes has a value of -88800000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AmortizationOfDeferredPropertyTaxes fact are: Context: ia921ea6150134071a756616139c6baca_D20230101-20230331, Unit: usd, Rule Element Id: 3489. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AmortizationOfDeferredPropertyTaxes has a value of -79500000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AmortizationOfDeferredPropertyTaxes fact are: Context: ie10215fa2dc64ca2b1d4292cba25fc1f_D20220101-20220331, Unit: usd, Rule Element Id: 3489. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AmortizationOfDeferredPropertyTaxes has a value of -45600000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AmortizationOfDeferredPropertyTaxes fact are: Context: i02e580b571c64852abe68600af4eeab3_D20230101-20230331, Unit: usd, Rule Element Id: 3489. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AmortizationOfDeferredPropertyTaxes has a value of -37800000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AmortizationOfDeferredPropertyTaxes fact are: Context: ia4bf6acc59f544538962f0daed69f84e_D20220101-20220331, Unit: usd, Rule Element Id: 3489. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AmortizationOfDeferredPropertyTaxes has a value of -77500000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AmortizationOfDeferredPropertyTaxes fact are: Context: ib9eb925e43cd493c818ae8f66b072950_D20230101-20230331, Unit: usd, Rule Element Id: 3489. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AmortizationOfDeferredPropertyTaxes has a value of -64500000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AmortizationOfDeferredPropertyTaxes fact are: Context: i5b87047036d64caca1fe96919a6dfeb1_D20220101-20220331, Unit: usd, Rule Element Id: 3489. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:PaymentsToAcquirePropertyPlantAndEquipment has a value of -658000000.0 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:PaymentsToAcquirePropertyPlantAndEquipment fact are: Context: i5b87047036d64caca1fe96919a6dfeb1_D20220101-20220331, Unit: usd, Rule Element Id: 1964. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -6400000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: i591a413c798e45b9a274a8a38137dae9_D20230101-20230331, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -6400000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: ie6d84faa2acd4f648328eab9afd5ec49_D20230101-20230331, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -14900000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: ibe664b7522b0492f820993ab613d4090_D20220101-20221231, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -14900000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: i6a5a968dec864cf28eab5e8c9aa065db_D20220101-20221231, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -6100000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: idde74194c47f440bb3d8457ab9e2295d_D20230101-20230331, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -6100000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: i670782870ba5498bb56956ec11127687_D20230101-20230331, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -7700000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: ifff2dae2687e428aa95a6ff05744f802_D20220101-20221231, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -7700000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: i1b193ba98a5d4767bb47e138100dd458_D20220101-20221231, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -12500000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: idf3327c143c245d6a3fceef7b7afeca5_D20230101-20230331, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -12500000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: i31e1974a2a20418ab7564b20baf8515f_D20230101-20230331, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -22600000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: i39ad11371517401fa81aedc64f9edd25_D20220101-20221231, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -22600000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: ided9f73b8d6540d1bc812da88b03c46b_D20220101-20221231, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -2900000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: i6dbbc759967b49b58da8aea29bcd42ab_D20230101-20230331, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -2900000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: i33ae0f5b43624899a4be58ceb2720e6e_D20230101-20230331, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -6400000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: i5fa350d92db548ee86527f7ada6fcad3_D20220101-20221231, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -6400000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: ic0f3d9aa22cb413199bea4b2b2ba34f6_D20220101-20221231, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -15400000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: ie967aa30a13d407e88a24de93ea4b184_D20230101-20230331, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -15400000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: if70a4fd4517946d4be3af70542c396d4_D20230101-20230331, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -29000000.0 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: iae68c091df384d80b5c47f0142871a26_D20220101-20221231, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss has a value of -29000000.0 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLoss fact are: Context: i51cbb5a9ea8f463ba7d860c28febe588_D20220101-20221231, Unit: usd, Rule Element Id: 7137. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AssetsFairValueDisclosure has a value of -760800000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AssetsFairValueDisclosure fact are: Context: i3e0a15f254304b7aa5593560991a9e80_I20230331, Unit: usd, Rule Element Id: 282. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AssetsFairValueDisclosure has a value of -1245400000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AssetsFairValueDisclosure fact are: Context: i393c5f2ccf51400d94ad442d012b7ee2_I20221231, Unit: usd, Rule Element Id: 282. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AssetsFairValueDisclosure has a value of -400000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AssetsFairValueDisclosure fact are: Context: if25aedd35362453584d9701f566db5f6_I20230331, Unit: usd, Rule Element Id: 282. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AssetsFairValueDisclosure has a value of -1000000.0 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AssetsFairValueDisclosure fact are: Context: i985f2e27ca1e4f84b252b2dec1746906_I20221231, Unit: usd, Rule Element Id: 282. aep-20230331.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:AssetsFairValueDisclosure has a value of -300000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:AssetsFairValueDisclosure fact are: Context: i3878281323724baeb7928f14624ac0c9_I20221231, Unit: usd, Rule Element Id: 282. aep-20230331.htm 4 [dqc-0048-Required-Calculation-Parent-Element-In-The-Cash-Flow-Statement] The filing should include in the cash flow statement calculation linkbase(s) http://www.aep.com/role/RevenuefromContractswithCustomersDetails - 0000060 - Disclosure - Revenue from Contracts with Customers (Details) one of the following elements as the root(first element) of the calculation tree to represent the aggregate change in cash for the period: CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect, CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect, NetCashProvidedByUsedInContinuingOperations (As long as the element NetCashProvidedByUsedInDiscontinuedOperations is also included the reconciliation between opening and closing cash). The calculation linkbase in the filing has the following root elements defined: CashAndCashEquivalentsPeriodIncreaseDecrease. Rule Element Id: 7482. aep-20230331.htm [dqc-0079-Extension-Members] aep:VirginiaMember is an extension member on the axis us-gaap:StatutoryAccountingPracticesByJurisdictionAxis that was reported in the extension taxonomy, but duplicates a concept, stpr:VA, that exists in the SEC Non-GAAP taxonomies. Rule Element Id: 7657. aep-20230331.xsd 877, aep-20230331_def.xml 1965 [dqc-0079-Extension-Members] aep:WestVirginiaMember is an extension member on the axis us-gaap:StatutoryAccountingPracticesByJurisdictionAxis that was reported in the extension taxonomy, but duplicates a concept, stpr:WV, that exists in the SEC Non-GAAP taxonomies. Rule Element Id: 7657. aep-20230331.xsd 919, aep-20230331_def.xml 1967 [dqc-0079-Extension-Members] aep:ArkansasMember is an extension member on the axis us-gaap:StatutoryAccountingPracticesByJurisdictionAxis that was reported in the extension taxonomy, but duplicates a concept, stpr:AR, that exists in the SEC Non-GAAP taxonomies. Rule Element Id: 7657. aep-20230331.xsd 774, aep-20230331_def.xml 1969 [dqc-0079-Extension-Members] aep:TexasMember is an extension member on the axis us-gaap:StatutoryAccountingPracticesByJurisdictionAxis that was reported in the extension taxonomy, but duplicates a concept, stpr:TX, that exists in the SEC Non-GAAP taxonomies. Rule Element Id: 7657. aep-20230331.xsd 959, aep-20230331_def.xml 1973 [dqc-0079-Extension-Members] aep:VirginiaMember is an extension member on the axis us-gaap:StatutoryAccountingPracticesByJurisdictionAxis that was reported in the extension taxonomy, but duplicates a concept, stpr:VA, that exists in the SEC Non-GAAP taxonomies. Rule Element Id: 7657. aep-20230331.xsd 877, aep-20230331_def.xml 2249 [dqc-0079-Extension-Members] aep:WestVirginiaMember is an extension member on the axis us-gaap:StatutoryAccountingPracticesByJurisdictionAxis that was reported in the extension taxonomy, but duplicates a concept, stpr:WV, that exists in the SEC Non-GAAP taxonomies. Rule Element Id: 7657. aep-20230331.xsd 919, aep-20230331_def.xml 2251 [dqc-0079-Extension-Members] aep:OhioMember is an extension member on the axis us-gaap:StatutoryAccountingPracticesByJurisdictionAxis that was reported in the extension taxonomy, but duplicates a concept, stpr:OH, that exists in the SEC Non-GAAP taxonomies. Rule Element Id: 7657. aep-20230331.xsd 530, aep-20230331_def.xml 2253 [dqc-0079-Extension-Members] aep:ArkansasMember is an extension member on the axis us-gaap:StatutoryAccountingPracticesByJurisdictionAxis that was reported in the extension taxonomy, but duplicates a concept, stpr:AR, that exists in the SEC Non-GAAP taxonomies. Rule Element Id: 7657. aep-20230331.xsd 774, aep-20230331_def.xml 2459 [dqc-0079-Extension-Members] aep:TexasMember is an extension member on the axis us-gaap:StatutoryAccountingPracticesByJurisdictionAxis that was reported in the extension taxonomy, but duplicates a concept, stpr:TX, that exists in the SEC Non-GAAP taxonomies. Rule Element Id: 7657. aep-20230331.xsd 959, aep-20230331_def.xml 2463 aep-20230331.htm aep-20230331.xsd aep-20230331_cal.xml aep-20230331_def.xml aep-20230331_lab.xml aep-20230331_pre.xml ex31aaep20231q.htm ex31aaeptco20231q.htm ex31aaeptexas20231q.htm ex31aapco20231q.htm ex31aim20231q.htm ex31aopco20231q.htm ex31apso20231q.htm ex31aswepco20231q.htm ex31baep20231q.htm ex31baeptco20231q.htm ex31baeptexas20231q.htm ex31bapco20231q.htm ex31bim20231q.htm ex31bopco20231q.htm ex31bpso20231q.htm ex31bswepco20231q.htm ex32aaep20231q.htm ex32aaeptco20231q.htm ex32aaeptexas20231q.htm ex32aapco20231q.htm ex32aim20231q.htm ex32aopco20231q.htm ex32apso20231q.htm ex32aswepco20231q.htm ex32baep20231q.htm ex32baeptco20231q.htm ex32baeptexas20231q.htm ex32bapco20231q.htm ex32bim20231q.htm ex32bopco20231q.htm ex32bpso20231q.htm ex32bswepco20231q.htm ex4aep20231q.htm ex9520231q.htm http://fasb.org/us-gaap/2022 http://xbrl.sec.gov/dei/2022 true true