XML 158 R116.htm IDEA: XBRL DOCUMENT
v3.25.2

ACQUISITIONS AND DISPOSITIONS - Impact of Asset Acquisitions (Details) MW in Millions, $ in Millions | 3 Months Ended |
--- | --- | ---
Jun. 30, 2025 USD ($) MW | Dec. 31, 2024 USD ($)
Asset Acquisition, Contingent Consideration [Line Items] |  |
Property, Plant and Equipment, Net | $ 86,337.1 | $ 82,415.6
Operating Lease Assets | 580.6 | 580.1
Asset Retirement Obligations | 3,625.1 | 3,530.6
Regulatory Liabilities and Deferred Investment Tax Credits | 7,973.9 | 8,344.0
Other Current Liabilities | 1,356.7 | 1,490.9
Deferred credits and other noncurrent liabilities | 913.8 | 800.6
PSO |  |
Asset Acquisition, Contingent Consideration [Line Items] |  |
Property, Plant and Equipment, Net | 8,203.6 | 6,532.3
Operating Lease Assets | 118.6 | 106.2
Asset Retirement Obligations | 133.9 | 118.8
Regulatory Liabilities and Deferred Investment Tax Credits | 698.2 | 689.7
Other Current Liabilities | 78.1 | 78.6
Deferred credits and other noncurrent liabilities | $ 50.3 | $ 34.3
PSO | VIU |  |
Asset Acquisition, Contingent Consideration [Line Items] |  |
Generation Capacity (MWs) | MW | 1,119 |
Property, Plant and Equipment, Net | $ 1,503.8 |
Operating Lease Assets | 16.3 |
Asset Retirement Obligations | 15.5 |
Other Liabilities | $ 91.4 |
Green Country | PSO |  |
Asset Acquisition, Contingent Consideration [Line Items] |  |
Generation Capacity (MWs) | MW | 795 |
Property, Plant and Equipment, Net | $ 818.9 |
Operating Lease Assets | 0.0 |
Asset Retirement Obligations | 0.0 |
Other Liabilities | 91.4 |
Green Country | PSO | VIU |  |
Asset Acquisition, Contingent Consideration [Line Items] |  |
Regulatory Liabilities and Deferred Investment Tax Credits | 50.0 |
Other Current Liabilities | 21.0 |
Deferred credits and other noncurrent liabilities | $ 20.0 |
Pixley | PSO |  |
Asset Acquisition, Contingent Consideration [Line Items] |  |
Generation Capacity (MWs) | MW | 189 |
Property, Plant and Equipment, Net | $ 379.6 |
Operating Lease Assets | 8.9 |
Asset Retirement Obligations | 12.4 |
Other Liabilities | $ 0.0 |
Flat Ridge IV | PSO |  |
Asset Acquisition, Contingent Consideration [Line Items] |  |
Generation Capacity (MWs) | MW | 135 |
Property, Plant and Equipment, Net | $ 305.3 |
Operating Lease Assets | 7.4 |
Asset Retirement Obligations | 3.1 |
Other Liabilities | $ 0.0 |

X
- Definition Asset Acquisition, Acquired Facility Capacity + References No definition available. + Details
Name: | aep_AssetAcquisitionAcquiredFacilityCapacity
Namespace Prefix: | aep_
Data Type: | dtr-types:powerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Regulated And Nonregulated Property, Plant, And Equipment + References No definition available. + Details
Name: | aep_RegulatedAndNonregulatedPropertyPlantAndEquipmentNet
Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 50 -Name Accounting Standards Codification -Section 15 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480123/805-50-15-3 + Details
Name: | us-gaap_AssetAcquisitionContingentConsiderationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
Name: | us-gaap_AssetRetirementObligationsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 64 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481620/480-10-55-64 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-14 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-11 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(12)(b)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(12)(b)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(12)(b)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(17)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_OtherLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481372/852-10-55-10 + Details
Name: | us-gaap_OtherLiabilitiesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_OtherLiabilitiesNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_RegulatoryLiabilityNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=aep_PublicServiceCompanyOfOklahomaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=aep_VerticallyIntegratedUtilitiesSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetAcquisitionAxis=aep_GreenCountryEnergyLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetAcquisitionAxis=aep_PixleySolarEnergyLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetAcquisitionAxis=aep_FlatRidgeIVWindLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |