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Related Party Transactions (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | $ 0 | $ 0 | $ 0
Related Party Transactions (Textuals) |  |  |  |
Total Property, Plant and Equipment, Net |  | $ 73,339,100 | 68,304,100 |
AEP Wind Holdings LLC PPAs [Abstract] |  |  |  |
Equity Method Investment, Ownership Percentage |  | 50.00% |  |
Charitable Contribution to AEP Foundation [Abstract] |  |  |  |
Related Party Charitable Contribuions to AEP Foundation |  | $ 75,000 |  |
Rockport Plant, Unit 2 [Member] |  |  |  |
Related Party Transactions (Textuals) |  |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share |  | 100.00% |  |
BP Wind Energy [Member] |  |  |  |
AEP Wind Holdings LLC PPAs [Abstract] |  |  |  |
Equity Method Investment, Ownership Percentage |  | 50.00% |  |
Generation and Marketing [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | $ 18,000 | 55,400 | 104,600
Generation and Marketing [Member] | BP Wind Energy [Member] |  |  |  |
AEP Wind Holdings LLC PPAs [Abstract] |  |  |  |
Equity Method Investment, Ownership Percentage |  | 50.00% |  |
Appalachian Power Co. to AEP Transmission Co [Member] |  |  |  |
Joint License Agreement |  |  |  |
Joint License Agreement |  | $ 2,500 | 2,400 | 900
Indiana Michigan Power Co to Kentucky Power Co [Member] |  |  |  |
Related Party Transactions (Textuals) |  |  |  |
Percentage of Power Sold under Unit Power Agreement |  | 30.00% |  |
AEP Generating Co to Indiana Michigan Power Co [Member] |  |  |  |
Cook Coal Terminal |  |  |  |
Coal Transloading Services |  | $ 9,000 | 11,000 | 12,000
Railcar Maintenance |  | $ 600 | 300 | 900
AEP Generating Co to Kentucky Power Co [Member] |  |  |  |
Related Party Transactions (Textuals) |  |  |  |
Percentage of Power Sold under Unit Power Agreement |  | 30.00% |  |
AEP Generating Co to Public Service Co of Oklahoma [Member] |  |  |  |
Cook Coal Terminal |  |  |  |
Railcar Maintenance |  | $ 600 | 400 | 700
AEP Generating Co To Southwestern Electric Power Co [Member] |  |  |  |
Cook Coal Terminal |  |  |  |
Railcar Maintenance |  | 2,700 | 2,800 | 3,000
AEP Energy Partners, Inc. to AEP Texas Inc. [Member] |  |  |  |
Oklaunion PPA between AEP Texas and AEPEP |  |  |  |
Oklaunion Purchase Power Agreement |  |  |  | 88,000
Indiana Michigan Power Co to AEP Transmission Co [Member] |  |  |  |
Joint License Agreement |  |  |  |
Joint License Agreement |  | 6,100 | 4,800 | 3,000
Kentucky Power Co to AEP Transmission Co [Member] |  |  |  |
Joint License Agreement |  |  |  |
Joint License Agreement |  | 600 | 500 | 400
Ohio Power Co to AEP Transmission Co [Member] |  |  |  |
Joint License Agreement |  |  |  |
Joint License Agreement |  | 5,200 | 4,600 | 4,500
Public Service Co of Oklahoma to AEP Transmission Co [Member] |  |  |  |
Joint License Agreement |  |  |  |
Joint License Agreement |  | 100 | 400 | 400
Wheeling Power Co to AEP Transmission Co [Member] |  |  |  |
Joint License Agreement |  |  |  |
Joint License Agreement |  | 200 | 200 | 200
AEP Generating Co [Member] |  |  |  |
Barging, Urea Transloading and Other Services |  |  |  |
Expenses from Barging, Urea Transloading and Other Services |  | $ 11,300 | 7,600 | 10,600
AEP Generating Co [Member] | Rockport Plant, Unit 2 [Member] |  |  |  |
Related Party Transactions (Textuals) |  |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share |  | 50.00% |  |
AEP Generating Co [Member] | AEP Generating Co to Indiana Michigan Power Co [Member] | Rockport Plant, Unit 2 [Member] |  |  |  |
Related Party Transactions (Textuals) |  |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share |  | 100.00% |  |
AEP Transmission Co [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | $ 1,354,500 | 1,171,500 | 954,600
Revenue from Related Parties, Net |  | 1,283,800 | 1,153,900 | 896,300
Sales and Purchases of Property |  |  |  |
Related Party Sales of Property |  | 2,300 | 1,400 | 200
Related Party Purchases of Property |  | 11,600 | 16,700 | 6,000
Related Party Transactions (Textuals) |  |  |  |
Total Property, Plant and Equipment, Net |  | 13,339,900 | 12,101,000 |
Charitable Contribution to AEP Foundation [Abstract] |  |  |  |
Related Party Charitable Contribuions to AEP Foundation |  | 11,100 |  |
AEP Transmission Co [Member] | Direct Sales to East Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 | 0 | 0
AEP Transmission Co [Member] | Auction Sales to OPCo [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 0
AEP Transmission Co [Member] | Direct Sales to AEPEP [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 0
AEP Transmission Co [Member] | Transmission Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 1,276,400 | 1,136,100 | 885,000
AEP Transmission Co [Member] | Other Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 7,400 | 17,800 | 11,300
AEP Transmission Co [Member] | Direct Sales to West Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 |  |
Appalachian Power Co [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 256,100 | 197,900 | 174,700
Transmission Service Charges |  |  |  |
PJM Net Transmission Service Charges |  | 345,100 | 302,000 | 243,200
Barging, Urea Transloading and Other Services |  |  |  |
Expenses from Barging, Urea Transloading and Other Services |  | 36,100 | 40,100 | 43,700
Sales and Purchases of Property |  |  |  |
Related Party Sales of Property |  | 16,000 | 6,200 | 5,700
Related Party Purchases of Property |  | 2,400 | 1,000 | 1,300
Related Party Transactions (Textuals) |  |  |  |
Total Property, Plant and Equipment, Net |  | 12,379,200 | 11,804,300 |
Charitable Contribution to AEP Foundation [Abstract] |  |  |  |
Related Party Charitable Contribuions to AEP Foundation |  | 12,500 |  |
Appalachian Power Co [Member] | Direct Sales to East Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 169,700 | 128,600 | 112,500
Appalachian Power Co [Member] | Auction Sales to OPCo [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues | [1] |  |  | 5,300
Appalachian Power Co [Member] | Direct Sales to AEPEP [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 0
Appalachian Power Co [Member] | Transmission Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 77,500 | 60,300 | 49,100
Appalachian Power Co [Member] | Other Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 8,900 | 9,000 | 7,800
Appalachian Power Co [Member] | Direct Sales to West Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 |  |
Indiana Michigan Power Co [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 15,300 | 3,800 | 10,500
Cost of Purchased Power from Affiliate |  | 241,800 | 217,900 | 172,800
Transmission Service Charges |  |  |  |
PJM Net Transmission Service Charges |  | 220,800 | 186,700 | 145,900
Sales and Purchases of Property |  |  |  |
Related Party Sales of Property |  | 5,300 | 7,000 | 1,500
Related Party Purchases of Property |  | 2,000 | 600 | 3,400
Related Party Transactions (Textuals) |  |  |  |
Total Property, Plant and Equipment, Net |  | 7,411,500 | 7,310,900 |
Charitable Contribution to AEP Foundation [Abstract] |  |  |  |
Related Party Charitable Contribuions to AEP Foundation |  | $ 11,000 |  |
Indiana Michigan Power Co [Member] | Rockport Plant, Unit 2 [Member] |  |  |  |
Related Party Transactions (Textuals) |  |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share |  | 50.00% |  |
Indiana Michigan Power Co [Member] | Auction Purchases From AEPEP [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Cost of Purchased Power from Affiliate | [1] | $ 0 | 0 | 0
Indiana Michigan Power Co [Member] | Auction Purchases From AEP Energy [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Cost of Purchased Power from Affiliate | [1] |  | 0 | 0
Indiana Michigan Power Co [Member] | Auction Purchases from AEPSC [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Cost of Purchased Power from Affiliate | [1] |  |  | 0
Indiana Michigan Power Co [Member] | Direct Purchases from AEGCo [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Cost of Purchased Power from Affiliate |  | 241,800 | 217,900 | 172,800
Indiana Michigan Power Co [Member] | Direct Sales to East Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 | 0 | 0
Indiana Michigan Power Co [Member] | Auction Sales to OPCo [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues | [1] |  |  | 3,100
Indiana Michigan Power Co [Member] | Direct Sales to AEPEP [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 0
Indiana Michigan Power Co [Member] | Transmission Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 7,700 | (2,500) | 2,900
Indiana Michigan Power Co [Member] | Other Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues | [2] | 7,600 | 6,300 | 4,500
Indiana Michigan Power Co [Member] | Direct Sales to West Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 |  |
Indiana Michigan Power Co [Member] | AEP Wind Holdings LLC [Member] | Generation and Marketing [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Cost of Purchased Power from Affiliate |  | 12,000 | 10,000 | 11,000
Kentucky Power Co [Member] |  |  |  |
Barging, Urea Transloading and Other Services |  |  |  |
Expenses from Barging, Urea Transloading and Other Services |  | 2,000 | 3,100 | 3,200
Related Party Transactions (Textuals) |  |  |  |
Capacity Sales |  | 199 |  |
Ohio Power Co [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 18,800 | 24,800 | 41,500
Cost of Purchased Power from Affiliate |  | 9,800 | 51,900 | 119,700
Transmission Service Charges |  |  |  |
PJM Net Transmission Service Charges |  | 608,200 | 508,900 | 417,400
Sales and Purchases of Property |  |  |  |
Related Party Sales of Property |  | 7,600 | 9,200 | 7,000
Related Party Purchases of Property |  | 2,000 | 1,400 | 1,200
Related Party Transactions (Textuals) |  |  |  |
Total Property, Plant and Equipment, Net |  | 8,609,300 | 7,963,000 |
Charitable Contribution to AEP Foundation [Abstract] |  |  |  |
Related Party Charitable Contribuions to AEP Foundation |  | 8,100 |  |
Ohio Power Co [Member] | Auction Purchases From AEPEP [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Cost of Purchased Power from Affiliate | [1] | 9,800 | 26,600 | 51,000
Ohio Power Co [Member] | Auction Purchases From AEP Energy [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Cost of Purchased Power from Affiliate | [1] |  | 25,300 | 58,700
Ohio Power Co [Member] | Auction Purchases from AEPSC [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Cost of Purchased Power from Affiliate | [1] |  |  | 10,000
Ohio Power Co [Member] | Direct Purchases from AEGCo [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Cost of Purchased Power from Affiliate |  | 0 | 0 | 0
Ohio Power Co [Member] | Direct Sales to East Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 | 0 | 0
Ohio Power Co [Member] | Auction Sales to OPCo [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 0
Ohio Power Co [Member] | Direct Sales to AEPEP [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 0
Ohio Power Co [Member] | Transmission Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | (3,600) | (1,100) | 16,600
Ohio Power Co [Member] | Other Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 22,400 | 25,900 | 24,900
Ohio Power Co [Member] | Direct Sales to West Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 |  |
Ohio Power Co [Member] | AEP Wind Holdings LLC [Member] | Generation and Marketing [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Cost of Purchased Power from Affiliate |  | 24,000 | 20,000 | 23,000
Public Service Co Of Oklahoma [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 2,900 | 4,200 | 5,200
Transmission Service Charges |  |  |  |
SPP Net Transmission Service Charges |  | 110,800 | 94,700 | 69,700
Sales and Purchases of Property |  |  |  |
Related Party Sales of Property |  | 2,500 | 500 | 1,100
Related Party Purchases of Property |  | 7,600 | 300 | 400
Related Party Transactions (Textuals) |  |  |  |
Total Property, Plant and Equipment, Net |  | 5,626,500 | 4,802,800 |
Charitable Contribution to AEP Foundation [Abstract] |  |  |  |
Related Party Charitable Contribuions to AEP Foundation |  | 5,800 |  |
Public Service Co Of Oklahoma [Member] | OKTCo Radial Asset Transfer [Member] | Net Book Value of Radial Assets [Member] |  |  |  |
Related Party Transactions (Textuals) |  |  |  |
Total Property, Plant and Equipment, Net |  |  | 60,000 |
Public Service Co Of Oklahoma [Member] | Direct Sales to East Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 | 0 | 0
Public Service Co Of Oklahoma [Member] | Auction Sales to OPCo [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 0
Public Service Co Of Oklahoma [Member] | Direct Sales to AEPEP [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 0
Public Service Co Of Oklahoma [Member] | Transmission Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 | 0 | 0
Public Service Co Of Oklahoma [Member] | Other Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 2,900 | 4,200 | 5,200
Public Service Co Of Oklahoma [Member] | Direct Sales to West Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 |  |
Southwestern Electric Power Co [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 59,500 | 41,400 | 41,000
Revenue from Related Parties, Net |  | 53,900 | 41,000 | 39,000
Transmission Service Charges |  |  |  |
SPP Net Transmission Service Charges |  | 62,100 | 56,200 | 31,300
Sales and Purchases of Property |  |  |  |
Related Party Sales of Property |  | 1,000 | 400 | 800
Related Party Purchases of Property |  | 2,800 | 300 | 2,800
Related Party Transactions (Textuals) |  |  |  |
Total Property, Plant and Equipment, Net |  | 8,262,200 | 7,400,100 |
Charitable Contribution to AEP Foundation [Abstract] |  |  |  |
Related Party Charitable Contribuions to AEP Foundation |  | 8,800 |  |
Southwestern Electric Power Co [Member] | Direct Sales to East Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 | 0 | 0
Southwestern Electric Power Co [Member] | Auction Sales to OPCo [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 0
Southwestern Electric Power Co [Member] | Direct Sales to AEPEP [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 0
Southwestern Electric Power Co [Member] | Transmission Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 51,500 | 39,600 | 37,400
Southwestern Electric Power Co [Member] | Other Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 1,100 | 1,400 | 1,600
Southwestern Electric Power Co [Member] | Direct Sales to West Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 1,300 |  |
Southwestern Electric Power Co [Member] | AEP Wind Holdings LLC [Member] | Generation and Marketing [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Cost of Purchased Power from Affiliate |  | 14,000 | 14,000 | 14,000
Wheeling Power Co [Member] [Domain] |  |  |  |
Barging, Urea Transloading and Other Services |  |  |  |
Expenses from Barging, Urea Transloading and Other Services |  | 4,700 | 3,200 | 3,300
AEP Texas Inc. [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 3,500 | 3,900 | 90,800
ERCOT Transmission Service Charges |  |  |  |
Billings from ETT for ERCOT Wholesale Transmission Services |  | 28,000 | 28,000 | 28,000
Sales and Purchases of Property |  |  |  |
Related Party Sales of Property |  | 3,000 | 400 | 900
Related Party Purchases of Property |  | 1,300 | 400 | 1,500
Related Party Transactions (Textuals) |  |  |  |
Total Property, Plant and Equipment, Net |  | 11,681,600 | 10,635,400 |
Charitable Contribution to AEP Foundation [Abstract] |  |  |  |
Related Party Charitable Contribuions to AEP Foundation |  | $ 9,900 |  |
AEP Texas Inc. [Member] | Oklaunion Generating Station [Member] |  |  |  |
Related Party Transactions (Textuals) |  |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share |  | 54.69% |  |
AEP Texas Inc. [Member] | Direct Sales to East Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | $ 0 | 0 | 0
AEP Texas Inc. [Member] | Auction Sales to OPCo [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 0
AEP Texas Inc. [Member] | Direct Sales to AEPEP [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  |  |  | 87,500
AEP Texas Inc. [Member] | Transmission Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 0 | 0 | 0
AEP Texas Inc. [Member] | Other Revenues [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | 3,500 | $ 3,900 | $ 3,300
AEP Texas Inc. [Member] | Direct Sales to West Affiliates [Member] |  |  |  |
Affiliated Revenues and Purchases |  |  |  |
Affiliated Revenues |  | $ 0 |  |
[1] | Refer to the Ohio Auctions section below for further information regarding these amounts.
[2] | I&M’s affiliated revenues exclude capacity sales to KPCo from Rockport Plant, Unit 2 and barging, urea transloading and other transportation services to affiliates. See sections “Unit Power Agreements” and “I&M Barging, Urea Transloading and Other Services” below for additional information.

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- Definition I&M provides barging, urea transloading and other transportation services to affiliates. + References No definition available. + Details
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- Definition Billings from ETT for ERCOT Wholesale Transmission Services + References No definition available. + Details
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Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Capacity Sales + References No definition available. + Details
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Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Charitable Contribution to AEP Foundation [Abstract] + References No definition available. + Details
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- Definition Cook Coal Terminal, a division of OPCo, performs coal transloading services at cost. + References No definition available. + Details
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Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Cook Coal Terminal and SWEPCo Railcar Facility. + References No definition available. + Details
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Data Type: | xbrli:stringItemType
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- Definition Cost of electricity purchased as well as fuel used to generate electricity used in operations and sold during the reporting period from affiliate. + References No definition available. + Details
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Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition ERCOT Transmission Service Charges [Abstract] + References No definition available. + Details
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Namespace Prefix: | aep_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Expenses from barging, urea transloading and other services provided by I&M. + References No definition available. + Details
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Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition 50 year joint license agreement between AEPTCo and operating companies allowing either party to occupy the granting party's facilities or real property. + References No definition available. + Details
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Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
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- Definition Joint License Agreement [Abstract] + References No definition available. + Details
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Balance Type: | na
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- Definition Oklaunion PPA between AEP Texas and AEPEP [Abstract] + References No definition available. + Details
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Namespace Prefix: | aep_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition AEP Texas has partial ownership in the Oklaunion Plant which is operated by PSO but has leased its entire portion of the output of the plant to a non-utility affiliate. This is the noncurrent liability portion of the lease. + References No definition available. + Details
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Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition PJM Net Transmission Service Charges + References No definition available. + Details
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