Other Short-term Investments
Other Short-Term Investments
Stock Appreciation Rights (SARs)
Stock Appreciation Rights (SARs) [Member]
Requested Annual Increase in Rebuttal
Requested Annual Increase in Rebuttal
Requested Annual Increase in Rebuttal
Maintenance
Utilities Operating Expense, Maintenance
Letters of Credit Limit
Line of Credit Facility, Maximum Borrowing Capacity
Interim WACC
Interim WACC
Interim Weighted Average Cost of Capital
Changes in Certain Components of Working Capital:
Increase (Decrease) in Operating Capital [Abstract]
Rate Matters
Public Utilities Disclosure [Text Block]
Cross Default Provisions Maximum Third Party Obligation Amount
Cross Default Provisions Maximum Third Party Obligation Amount
Non-exchange traded commodity contracts containing cross-default provisions
All Award Types
Award Type [Domain]
Fair Value as of Grant Date
Award Grant Date Fair Value
AEP Transmission Holdco [Member]
AEP Transmission Holdco [Member]
AEP Transmission Holdco.
Wholesale and Competitive - Retail
Wholesale and Competitive - Retail [Member]
Wholesale and Competitive - Retail
Alternative and Other [Member]
Alternative and Other [Member]
Alternative and Other [Member]
COVID-19
COVID-19 [Member]
COVID-19
Pension Contributions to Qualified Plan Trust
Qualified Pension Contribution
Payment for Pension Benefits
Transfers out of Level 3
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3
Staff and Intervenor Recommended Return on Equity
Staff and Intervenor Recommended Return on Equity
Staff and Intervenor Recommended Return on Equity
Disallowance Item [Domain]
Disallowance Item [Domain]
[Domain] for Disallowance Item [Axis]
Recommended Disallowance from Staff or Intervenors
Recommended Disallowance from Staff or Intervenors
Recommended disallowance from either staff or intervenors in current case.
Deferred Income Tax Liabilities, Net
Deferred Income Tax Liabilities, Net
Accrued Taxes, Net
Increase (Decrease) in Accrued Taxes Payable
Purchases of Investment Securities
Payments to Acquire Investments
Payments to Acquire Investments
Financing Activities (Textuals)
Financing Activities Textuals [Abstract]
Financing Activities.
After 10 years
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value
Insider Trading Policies and Procedures [Line Items]
Rule 10b5-1 Arrangement Terminated
Rule 10b5-1 Arrangement Terminated [Flag]
Risk Management Assets
Current Risk Management Assets
Derivative Asset, Current
Other Revenues [Member]
Other Revenues [Member]
Other Revenues.
Junior Subordinated Notes
Junior Subordinated Notes
Maximum Future Payments for Letters of Credit Uncommitted Facilities
Maximum Future Payments for Letters of Credit Uncommitted Facilities [Table Text Block]
[Table Text Block] for aep_MaximumFuturePaymentsForLettersOfCreditUncommittedFacilitiesTextBlock [Table]
Amount of Approved Increase Related to Storm Catastrophe Reserve
Amount of Approved Increase Related to Storm Catastrophe Reserve
Amount of Approved Increase Related to Storm Catastrophe Reserve
Other Long Term Debt Six
Other Long Term Debt Six [Member]
Other Long Term Debt Six
Restatement does not require Recovery
Restatement Does Not Require Recovery [Text Block]
Change in Other Noncurrent Assets
Increase (Decrease) in Other Noncurrent Assets
2022 Recommended Increase in ENEC Rates
2022 Recommended Increase in ENEC Rates
2022 Recommended Increase in ENEC Rates
Renewable Energy Portfolio Standards Costs
Renewable Energy Portfolio Standards Costs [Member]
Renewable Energy Portfolio Standards Costs
Proceeds on Sale of Receivables to AEP Credit
Proceeds on Sale of Receivables to AEP Credit [Text Block]
Proceeds on sale of receivables to AEP Credit.
Fair Value Significant Unobservable Input Price Per Unit
Fair Value Significant Unobservable Input Price Per Unit
Price per unit of significant unobservable inputs, such as but not limited to fair value for financial transmission rights agreements and energy contracts.
Previously Incurred Costs Deferral Below Authorized ROE Band
Previously Incurred Costs Deferral Below Authorized ROE Band
Deferred previously incurred costs estimate that will earn below authorized ROE band.
Variable Interest Entities (Textuals)
Variable Interest Entities (Textuals) [Abstract]
Unearned Revenue
Unearned Revenue
Carrying amount as of the balance sheet date of unearned revenue that will be recognized over a future period of time consistent with the repayment of Transition Funding III's bond principal balance.
2022 Requested Increase in ENEC Rates Second Filing
2022 Requested Increase in ENEC Rates Second Filing
2022 Requested Increase in ENEC Rates Second Filing
Current Liabilities
Liabilities, Current [Abstract]
Forward Equity Contract Payment Rate
Forward Equity Contract Payment Rate
Forward Equity Contract Payment Rate
gain (loss) on Disposition of Business net of Tax
Gain (Loss) on Disposition of Business net of Tax
Gain (Loss) on Disposition of Business net of Tax
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Accounts Receivable and Accrued Unbilled Revenues
Accounts Receivable and Accrued Unbilled Revenues [Text Block]
Accounts receivable and accrued unbilled revenues under the sale of receivables agreement.
Dividends Paid on Common Stock
Payments of Ordinary Dividends, Common Stock
Wholesale and Competitive [Member]
Wholesale and Competitive [Member]
Revenues related to wholesale and competitive sales.
Total Diluted Earnings Per Share Attributable to AEP Common Shareholders
Earnings Per Share, Diluted
Mineral Rights
Mineral Rights [Member]
Mineral Rights
Total Accounts Receivable
Accounts Receivable, after Allowance for Credit Loss, Current
Equity Units [Axis]
Equity Units [Axis]
AEP Equity Units. Corporate units issued by AEP that settle in AEP stock.
AEPTCo Parent [Member]
AEPTCo Parent [Member]
AEPTCo Parent [Member]
Pollution Control Bond Five
Pollution Control Bond Five [Member]
Pollution Control Bond Five
Issuance of Short-term Debt with Original Maturities greater than 90 Days
Proceeds from Short-Term Debt, Maturing in More than Three Months
Alternative [Member]
Alternative [Member]
Alternative [Member]
Components of Net Periodic Benefit Cost
Schedule of Net Benefit Costs [Table Text Block]
Other Noncurrent Assets
Assets, Noncurrent [Abstract]
Other Income (Expense):
Other Nonoperating Income (Expense) [Abstract]
Percentage of an Asset Acquired
Percentage of an Asset Acquired
Percentage of an asset acquired when AEP does not purchase the entire asset.
Redeemable Noncontrolling Interest
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Trading Symbol
Trading Symbol
US Government Agencies Debt Securities [Member]
US Government Agencies Debt Securities [Member]
Guarantor Obligations, Nature [Domain]
Guarantor Obligations, Nature [Domain]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Opinion Coal Fired Plants Capacity Factor
Opinion Coal Fired Plants Capacity Factor
Opinion Coal Fired Plants Capacity Factor
Approved Annual Revenue Increase
Approved Annual Revenue Increase
Amount of approved annual revenue increase.
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Abstract]
Dividends Paid on Common Stock
Payments of Distributions to Affiliates
Payment Timing [Axis]
Payment Timing [Axis]
Payment Timing
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings
Direct Borrowing [Member]
Direct Borrowing [Member]
Direct Borrowing and Loans from and to Parent
Equity
Equity, Attributable to Parent [Abstract]
Tax Reform Excess ADIT Reversal
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent
Approved Rider to Recover Dolet Hills and Pirkey Costs
Approved Rider to Recover Dolet Hills and Pirkey Costs
Approved Rider to Recover Dolet Hills and Pirkey Costs
Total Long-Term Debt
Total Long-Term Debt [Member]
Total Long-Term Debt
2023 Kentucky Base Rate and Securitization Case [Member]
2023 Kentucky Base Rate and Securitization Case [Member]
2023 Kentucky Base Rate and Securitization Case
Residential [Member]
Residential [Member]
Retail revenues from the residential class.
Service Cost
Defined Benefit Plan, Service Cost
2023 Staff and Intervenor Recommended Carrying Charges
2023 Staff and Intervenor Recommended Carrying Charges
2023 Staff and Intervenor Recommended Carrying Charges
Executive Category:
Executive Category [Axis]
2022 Approved Overall ENEC Rate Increase
2022 Approved Overall ENEC Rate Increase
2022 Approved Overall ENEC Rate Increase
Accrued Reimbursement of Spent Nuclear Fuel Costs
Accrued Reimbursement of Spent Nuclear Fuel Costs
Accrued reimbursement of spent nuclear fuel costs at Cook nuclear plant. The Department of Energy has an obligation to I&M over the storage of spent nuclear waste.
Revenue from Contract with Customers, Net of Provisions for Refund, Including Assessed Tax
Revenue from Contract with Customers, Net of Provisions for Refund, Including Assessed Tax
Revenue from Contract with Customers, Net of Provisions for Refund, Including Assessed Tax
Significant Accounting Matters
Significant Accounting Policies [Text Block]
Level 1 [Member]
Fair Value, Inputs, Level 1 [Member]
DIR Revenue Amount above 2019 Authorized Limit
DIR Revenue Amount above 2019 Authorized Limit
Amount proposed by audit report that 2019 DIR revenue exceeded its authorized limit by.
Asset Retirement Obligation - Louisiana [Member]
Asset Retirement Obligation - Louisiana [Member]
Asset Retirement Obligation - Louisiana [Member]
Assets and Liabilities HFS - Contracted Renewables
Assets and Liabilities HFS - Contracted Renewables [Table Text Block]
Table containing the Assets and Liabilities Held for Sale related to the contracted competitive renewables portfolio.
Impaired Long-Lived Assets Held and Used by Type [Axis]
Impaired Long-Lived Assets Held and Used by Type [Axis]
Competitive Contracted Renewables NBV
Competitive Contracted Renewables NBV
Competitive Contracted Renewables NBV
Equity Components [Axis]
Statement, Equity Components [Axis]
Equity Components [Axis]
Financial Instruments [Domain]
Major Types of Trading Securities and Assets [Domain]
Financial Instruments [Domain]
Indiana Earnings Test Filings
Indiana Earnings Test Filings [Member]
Indiana Earnings Test Filings
Additional 402(v) Disclosure
Additional 402(v) Disclosure [Text Block]
Renewable Energy Credits
Renewable Energy Credits
Amount of renewable energy credits removed from the materials and supplies line item and split out separately on the face of the balance sheet due to materiality.
Hedging Relationship [Domain]
Hedging Relationship [Domain]
Disaggregation of Revenue
Disaggregation of Revenue [Abstract]
Net of Affiliated Provisions for Refund [Domain]
Net of Affiliated Provisions for Refund [Domain]
Net of Affiliated Provisions for Refund [Domain]
2020 Louisiana Base Rate Case
2020 Louisiana Base Rate Case [Member]
2020 Louisiana Base Rate Case
Requested Recovery of Dolet Hills Power Station
Requested Recovery of Dolet Hills Power Station
The amount requested for recovery of Dolet Hills Power Station.
Other Long Term Debt Five
Other Long Term Debt Five [Member]
Other Long Term Debt Five
Amount of Increase Related to SPP Expenses
Amount of Increase Related to SPP Expenses
Amount of Increase Related to SPP Expenses
Entity Small Business
Entity Small Business
Local Phone Number
Local Phone Number
Recovery of Erroneously Awarded Compensation Disclosure [Line Items]
Ownership Interest in Mitchell Power Plant
Ownership Interest in Mitchell Power Plant
Ownership Interest in Mitchell Power Plant
Derivative, Notional Amount
Derivative, Notional Amount
Commodity Hedges [Member]
Commodity [Member]
2023 Intervenor Recommended Share of OSS Revenues with Customers
2023 Intervenor Recommended Share of OSS Revenues with Customers
2023 Intervenor Recommended Share of OSS Revenues with Customers
FTRs [Member]
Financial Trasnsmission Rights [Member]
Risk management commodity contracts whose primary underlying risk is tied financial transmission rights.
Fair Value of Derivative Instruments
Derivative Instrument Detail [Abstract]
Restricted Cash
Restricted Cash and Cash Equivalents, Current
Other Operation Expense [Member]
Other Operation Expense [Member]
Other operation expense.
Retirement Plan Type [Domain]
Retirement Plan Type [Domain]
Reclassifications of KPCo Pension and OPEB Regulatory Assets from AOCI, before Income Tax (Expense) Benefit
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent
Cost
Investment Owned, Cost
Forgone Recovery due to Violation of Home Country Law, Amount
Forgone Recovery due to Violation of Home Country Law, Amount
Natural Gas Expenses and Purchases of Electricity to be Recovered from Customers [Table Text Block]
Natural Gas Expenses and Purchases of Electricity to be Recovered from Customers [Table Text Block]
Natural Gas Expenses and Purchases of Electricity to be Recovered from Customers
Depreciation
Depreciation
Expected Retirement Date
Disposal Group, Including Discontinued Operation, Description and Timing of Disposal
Renewable Energy Facilities
Renewable Energy Facilities [Member]
Renewable Energy Facilities
ENEC Filing
2021 and 2022 ENEC Filing [Member]
2021 and 2022 ENEC Filing
Retirement Benefits [Abstract]
Retirement Benefits [Abstract]
OCC Staff and Intervenor Recommended Plant Investments
OCC Staff and Intervenor Recommended Plant Investments
OCC Staff and Intervenor Recommended Plant Investments
Comprehensive Income [Abstract]
Comprehensive Income [Abstract]
Cook Plant Study Costs [Member]
Cook Plant Study Costs [Member]
Cook Plant Study Costs.
Maximum Minimum Average Interest Rates for Funds Borrowed from Loaned to Nonutility Money Pool
Maximum Minimum Average Interest Rates for Funds Borrowed from Loaned to Nonutility Money Pool [Text Block]
Tabular disclosure of the maximum and minimum weighted-average interest rate, calculated on a daily basis and the average interest rates of funds borrowed from or loaned to a Nonutility Money Pool during the period.The Nonutility Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain nonutility subsidiaries.
Total Principal Outstanding
Loan, Held-for-Sale or Securitization or Asset-Backed Financing Arrangement, Principal Outstanding
Portion at Fair Value Measurement [Member]
Portion at Fair Value Measurement [Member]
Amortization of Excess ADIT Not Subject to Normalization Requirements Policy
Unprotected Excess ADIT Amortization Policy [Policy Text Block]
Text Block for Unprotected Excess ADIT Amortization Policy.
Virginia
Virginia [Member]
Virginia
Public Utilities, General Disclosures [Line Items]
Public Utilities, General Disclosures [Line Items]
Income Taxes (Textuals) [Abstract]
Income Taxes (Textuals) [Abstract]
Income Taxes.
Due Date
Debt Instrument, Maturity Date 1
Date when the debt instrument is scheduled to be fully repaid, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).
Total Mezzanine Equity
Total Mezzanine Equity
Total mezzanine equity balance.
FAC Credit to Customers
FAC Credit to Customers
FAC Credit to Customers
Variable Interest Entities
Consolidation, Variable Interest Entity, Policy [Policy Text Block]
TOTAL REVENUES
Revenues
Revenues
Deferred Fuel Over/Under-Recovery, Net
Fuel Over Under Recovery Net
The net change during the reporting period in the value of the asset (liability) created by an (over) under recovery of fuel costs. An over recovery represents the excess of fuel revenues billed to customers over fuel costs incurred and an under recovery represents excess fuel costs incurred over fuel revenues billed to customers.
Aggregate Available
Trading Arrangement, Securities Aggregate Available Amount
Insider Trading Policies and Procedures Not Adopted
Insider Trading Policies and Procedures Not Adopted [Text Block]
Employee Benefits and Pension Assets
Employee Benefits and Pension Assets
Element represents the noncurrent asset recognized on the balance sheet that is associated with employee benefit and pension assets including, but not limited to, defined benefit pension plans, other postretirement defined benefit plans, deferred incentive compensation and other postemployment benefits.
Award Type
Award Type [Axis]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Spent Nuclear Fuel and Decommissioning Trusts [Member]
Spent Nuclear Fuel and Decommissioning Trusts [Member]
Spent Nuclear Fuel and Decommissioning Trusts.
Loans to Parent
Loans to Parent
Loans to Parent at period end. Parent represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
2021 Louisiana Storm Cost Filing
2021 Louisiana Storm Cost Filing [Member]
2021 Louisiana Storm Cost Filing
Document Quarterly Report
Document Quarterly Report
Jurisdiction [Axis]
Jurisdiction [Axis]
Common Stock Dividends
Dividends, Common Stock
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Delinquent Securitized Accounts Receivable
Delinquent Amount at End of Period on Loans Managed and Securitized or Asset-Backed Financing Arrangement
Rockport Plant, Unit 2 Acquisition Price
Rockport Plant, Unit 2 Acquisition Price
The future acquisition price of the Rockport Plant, Unit 2; pending regulatory approvals and litigation outcomes.
Intervenor Recommended Return on Common Equity
Intervenor Recommended Return on Common Equity
Intervenor recommended return on common equity.
Total Property, Plant and Equipment
Total Property, Plant and Equipment
Property, Plant and Equipment, Gross
Notes Payable, Other Payable
Notes Payable, Other Payable [Member]
Notes Payable, Other Payable
Expensed Remaining Closed Coal Plant
Expensed Remaining Closed Coal Plant
Expensed Remaining Closed Coal Plant Regulatory Asset previously ordered by the Virginia SCC.
PEO Actually Paid Compensation Amount
PEO Actually Paid Compensation Amount
Expected Return on Plan Assets
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Texas Retail Electric Provider Bad Debt Expense
Texas Retail Electric Provider Bad Debt Expense [Member]
Texas Retail Electric Provider Bad Debt Expense
2021 Approved Reduction in ENEC Projected Costs
2021 Approved Reduction in ENEC Projected Costs
2021 Approved Reduction in ENEC Projected Costs
Cash, Cash Equivalents and Restricted Cash
Cash, Cash Equivalents and Restricted Cash [Abstract]
Cash, Cash Equivalents and Restricted Cash [Abstract]
Cumulative Fair Value Hedging Adjustment in the Carrying Amount of the Hedged Asset (Liability)
Cumulative Fair Value Hedging Adjustment in the Carrying Amount of the Hedged Asset (Liability)
Cumulative Fair Value Hedging Adjustment in the Carrying Amount of the Hedged Asset (Liability)
Change in Other Regulatory Assets
Increase (Decrease) in Other Regulatory Assets
Obligations Under Operating Leases
Operating Lease, Liability, Current
Impact of Cash Flow Hedges on the Condensed Balance Sheet
Impact of Cash Flow Hedges on Balance Sheet [Text Block]
Tabular disclosure of the impact of cash flow hedges on the balance sheet.
Investment in Private Investee
Investment in ChargePoint [Member]
Investment in ChargePoint. Consists of shares and share warrants
Property Taxes
Amortization of Deferred Property Taxes
Production and Investment Tax Credits
Effective Income Tax Rate Reconciliation production and investment tax credits
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations due to production and investment tax credits.
Cash Flow Hedges, Net of Tax
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax
Accrued Unbilled Revenues
Unbilled Receivables, Current
Nonaffiliated Party Power Participation Ratio
Nonaffiliated Party Power Participation Ratio
Power participation ratio of nonaffiliated party
Revenue from Contracts with Customers [Abstract]
Revenue from Contracts with Customers [Abstract]
Revenue from Contracts with Customers [Abstract]
Total Long-Term Debt Outstanding [Domain]
Total Long-Term Debt Outstanding [Domain]
Total Long-Term Debt Outstanding [Domain]
Restoration Funding [Member]
Restoration Funding [Member]
Texas Restoration Funding for Hurricane Harvey
Requested Return on Equity
Public Utilities, Requested Return on Equity, Percentage
Flat Ridge II
Flat Ridge II [Member]
Flat Ridge II
Stock Price or TSR Estimation Method
Stock Price or TSR Estimation Method [Text Block]
Current Long Term Debt [Axis]
Current Long Term Debt [Axis]
Current Long Term Debt
Reconciliation of Cash, Cash Equivalents and Restricted Cash
Reconciliation of Cash, Cash Equivalents and Restricted Cash [Table Text Block]
Reconciliation of Cash, Cash Equivalents and Restricted Cash
Security Exchange Name
Security Exchange Name
Accumulated Other Comprehensive Income (Loss)
Beginning Balance in AOCI
Ending Balance in AOCI
Accumulated Other Comprehensive Income (Loss), Net of Tax
Employee Stock Option
Employee Stock Option [Member]
Derivatives and Hedging
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Transmission [Member]
Electric Transmission [Member]
Total Long-Term Debt Two [Axis]
Total Long-Term Debt Due within One Yr [Axis]
Total Long-Term Debt Due within One Yr
Cook plant
Cook Plant [Member]
Cook Plant
Regulated Status [Axis]
Regulated Status [Axis]
Regulated Status Axis
Approximate OVEC Generating Capacity (MWs)
Utility Plant Generation Capacity
Generating capacity of utility plants.
Maximum [Member]
High [Member]
Maximum [Member]
Document Type
Document Type
Stockholders Equity ASU 2016-13 Adoption
Stockholders Equity ASU 2016-13 Adoption
This element represents movements included in the statement of changes in stockholders' equity which are specifically related to the adoption of ASU 2016-13.
Tabular List, Table
Tabular List [Table Text Block]
Transfers into Level 3
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3
Notes Payable
Other Notes Payable
Establishment of Regulatory Asset
Establishment of Regulatory Asset
2017-2019 Virginia Triennial Review Establishment of Regulatory Asset
Changes in Accumulated Other Comprehensive Income (Loss) by Component
Changes In Accumulated Other Comprehensive Income by Component [Abstract]
Senior Unsecured Notes Two [Member]
Senior Unsecured Notes Two [Member]
A senior note is a bond that takes priority over other debt securities sold by the issuer. In the event the issuer goes bankrupt, senior debt holders receive priority for [must receive] repayment [prior] relative to junior and unsecured (general) creditors.
Requested Net Increase in Oklahoma Annual Revenues
Requested Net Increase in Oklahoma Annual Revenues
Requested Net Increase in Oklahoma Annual Revenues
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Risk Management Liabilities
Current Risk Management Liabilities
Derivative Liability, Current
Fair Value Measurements 1 (Textuals)
Fair Value Measurements 1 (Textuals) [Abstract]
Fair value measurements textuals abstract for assets and liabilities measured on a recurring basis.
Dolet Hills Power Station Fuel Costs - Louisiana
Dolet Hills Power Station Fuel Costs - Louisiana [Member]
Dolet Hills Power Station Fuel Costs - Louisiana
Fair Values of Long-term Debt
Book Values And Fair Values Of Long Term Debt Policy [Text Block]
Policy for determining fair value of long-term debt.
Maximum and Minimum Interest Rates for Funds Either Borrowed from or Loaned to Utility Money Pool
Maximum And Minimum Interest Rates For Funds Either Borrowed From Or Loaned To Utility Money Pool [Text Block]
Tabular disclosure of the maximum and minimum weighted-average interest rate, calculated on a daily basis, of funds either borrowed from or loaned to a Utility Money Pool during the period. The Utility Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain utility subsidiaries.
Allowance for Uncollectible Accounts
Accounts Receivable, Allowance for Credit Loss, Current
Organization and Summary of Significant Accounting Policies (Textuals)
Organization and Summary of Significant Accounting Policies Textuals [Abstract]
Organization and Summary of Significant Accounting Policies.
Disallowance Item [Axis]
Disallowance Item [Axis]
Disallowance Item [Axis]
Cash [Member]
Cash [Member]
Total Long-Term Debt Due Within One Year [Domain]
Total Long-Term Debt Due Within One Year [Domain]
Total Long-Term Debt Due Within One Year [Domain]
Revenue from Contracts with Customers
Generation & Marketing Revenues
Fees Paid to AEP Credit for Customer Accounts Receivable Sold
Revenue from Contract with Customer, Including Assessed Tax
Title of 12(b) Security
Title of 12(b) Security
Oxbow Mine Related Costs Recovery Request
Oxbow Mine Related Costs Recovery Request
Unopposed settlement agreement filed with the PUCT for recovery of Oxbow Mine related costs.
Senior Unsecured Notes Eleven
Senior Unsecured Notes Eleven [Member]
Senior Unsecured Notes Eleven
Dolet Hills Power Station Accelerated Depreciation [Member]
Dolet Hills Power Station Accelerated Depreciation [Member]
Dolet Hills Power Station Accelerated Depreciation [Member]
Aggregate Erroneous Compensation Not Yet Determined
Aggregate Erroneous Compensation Not Yet Determined [Text Block]
ELG Investment
Estimated ELG Investment
Estimated ELG Investment
Minimum Lease Payments, Sale Leaseback Transactions, Next Twelve Months
Minimum Lease Payments, Sale Leaseback Transactions, Next 12 Months
2023 Michigan Base Rate Case [Member]
2023 Michigan Base Rate Case [Member]
2023 Michigan Base Rate Case
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Abstract]
Requested Securitization Bonds Regulatory Assets Recovery
Requested Securitization Bonds Regulatory Assets Recovery
Requested Securitization Bonds Regulatory Assets Recovery
Forgone Recovery due to Expense of Enforcement, Amount
Forgone Recovery due to Expense of Enforcement, Amount
Amortization (Deferral) of Incremental Nuclear Refueling Outage Expenses, Net
Deferral of Incremental Nuclear Refueling Outage Expenses, Net
The net cash inflow or outflow due to Cook Unit 1 & 2 refueling outage levelization.
Entity Tax Identification Number
Entity Tax Identification Number
OCC Staff and Intervenor Recommended ROE Range
OCC Staff and Intervenor Recommended ROE Range
OCC Staff and Intervenor Recommended ROE Range
Minimum Interest Rate for Funds Loaned
Minimum Interest Rate for Funds Loaned
The minimum weighted-average interest rate of funds outstanding at that time, calculated on a daily basis, loaned during the period.
Pollution Control Bond Eight
Pollution Control Bond Eight [Member]
Pollution Control Bond Eight
Statistical Measurement [Axis]
Statistical Measurement [Axis]
AEP Texas Interim Transmission and Distribution Rates [Member]
AEP Texas Interim Transmission and Distribution Rates [Member]
AEP Texas Interim Transmission and Distribution Rates
Other Current Assets
Increase (Decrease) in Other Current Assets
Proposed Rate Adjustments [Domain]
Proposed Rate Adjustments [Domain]
Proposed Rate Adjustments
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Entity Interactive Data Current
Entity Interactive Data Current
Intervenor Recommended Opposition to Return on Retirement Costs
Intervenor Recommended Opposition to Return on Retirement Costs
Intervenor Recommended Opposition to Return on Retirement Costs
Adjusted Cost of Domestic Equity Securities
Adjusted Cost Of Equity Securities
Adjusted cost of equity securities within the nuclear trusts
Asset Retirement Obligation
Beginning Balance
Ending Balance
Asset Retirement Obligation
2023 Intervenor Recommended Under Recovery Disallowance
2023 Intervenor Recommended Under Recovery Disallowance
2023 Intervenor Recommended Under Recovery Disallowance
2021 Modified Reduction in ENEC Projected Costs
2022 Modified Reduction in ENEC Projected Costs
2022 Modified Reduction in ENEC Projected Costs
Plant in Service
Plant in Service [Member]
Plant in Service
AEP Texas Inc. [Member]
AEP Texas Inc. [Member]
AEP Texas Inc.
Impairment Charge Total
Impairment Charge Total
Total impairment charge recorded as part of agreement.
Within 1 year
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value
Related and Nonrelated Party Status [Axis]
Related and Nonrelated Party Status [Axis]
Long-term Accounts Receivable - Affiliated
Increase (Decrease) in Accounts Receivable, Related Parties
Measure:
Measure [Axis]
Name
Outstanding Recovery, Individual Name
AOCI Gain (Loss) Net of Tax
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax
Revenue from Contract with Customer
Revenue from Contract with Customer [Policy Text Block]
Commitments Guarantees and Contingencies [Abstract]
Commitments Guarantees and Contingencies [Abstract]
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Revenue Textuals
Revenue Textuals [Abstract]
Revenue Textuals Abstract.
Other Long-term Debt
Other Long-Term Debt
Maximum Potential Lease Payments, AEPRO Barge and Boat Leases
Maximum Potential Lease Payments, AEPRO Barge and Boat Leases
Future potential lease obligations under guaranteed AEPRO boat and barge leases.
Disposal Group, Including Discontinued Operation, Assets
Disposal Group, Including Discontinued Operation, Assets
Other Long Term Debt Two [Member]
OtherLongTermDebtTwo [Member]
Other Long Term Debt Two [Member]
Prepaid Pension and OPEB Assets [Member]
Prepaid Pension and OPEB assets [Member]
Prepaid Pension and OPEB assets
Derivatives and Hedging
Derivatives, Policy [Policy Text Block]
Total Long-Term Debt Two [Domain]
Total Long-Term Debt Two [Domain]
Total Long-Term Debt Two [Domain]
Power [Member]
Power Contract Member [Member]
Nominal energy measure used to calculate payments on a derivative instrument.
Operating Lease, Payments
Operating Lease, Payments
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Estimated Turk AFUDC Refunds
Estimated Turk AFUDC Refunds
Estimated Turk AFUDC Refunds
Interest Cost
Defined Benefit Plan, Interest Cost
Amount of Gain (Loss) Recognized on Risk Management Contracts
Gain (Loss) on Derivative Instruments, Net, Pretax
Other Noncontrolling Interests
Other Noncontrolling Interests
PEO
PEO [Member]
Other Changes in Equity
Forward Equity Purchase Contract Included in Current and Noncurrent Liabilities as of September 30,
Stockholders' Equity, Other
Benefit Plans
Retirement Benefits [Text Block]
TOTAL OTHER NONCURRENT ASSETS
Other Noncurrent Assets
Assets, Noncurrent
Term Loan 2 [Member]
Term Loan 2 [Member]
Term Loan 2
Generation And Marketing [Member]
Generation And Marketing [Member]
Generation And Marketing [Member]
Common Stock, Par or Stated Value Per Share
Common Stock, Par or Stated Value Per Share
Sale of Stock [Axis]
Sale of Stock [Axis]
Notional Volume Of Derivative Instruments
Notional Volume Of Derivative Instruments [Abstract]
Notional Volume Of Derivative Instruments Abstract.
North Central Wind Energy Facilities [Axis]
North Central Wind Energy Facilities [Axis]
North Central Wind Energy Facilities
Net Cash Flows from (Used for) Investing Activities
Net Cash Provided by (Used in) Investing Activities
After 1 year through 5 years
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value
Maturity Year [Domain]
Maturity Year [Domain]
Maturity of Net Fair Value of Risk Management Contracts Prior to Cash Collateral, Assets/Liabilities
Maturity Of Net Fair Value Of Risk Management Contracts Prior To Cash Collateral Assets Or Liabilities
Maturity of the net fair value of risk management contracts prior to cash collateral, assets or liabilities.
Requested Deferred Storm Costs
Requested Deferred Storm Costs
Requested Deferred Storm Costs
Staff Recommended Annual Rate Increase
Staff Recommended Annual Rate Increase
The staff's recommended annual rate increase.
Affiliated Long Term Debt Noncurrent
Long-term Debt - Affiliated
Affiliated Long Term Debt Noncurrent
Sum of the affiliated carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.
Liabilities Held for Sale
Disposal Group, Including Discontinued Operation, Liabilities
Staff and Intervenor Recommended Annual Increase
Staff and Intervenor Recommended Annual Increase
Staff and Intervenor recommended increase in annual rates.
Long-term Risk Management Liabilities
Long-term Risk Management Liabilities
Derivative Liability, Noncurrent
Outstanding Aggregate Erroneous Compensation Amount
Outstanding Aggregate Erroneous Compensation Amount
Repayments of Debt
Repayments of Debt
Maximum Borrowings from Money Pool
Maximum Borrowings from Money Pool
Maximum Borrowings from a Money Pool at anytime during the period. The Money Pool represents a centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
Gross Realized Gains on Investment Sales
Gross Realized Gains on Investment Sales On Short Term Investment
Gross Realized Gains on Investment Sales On Short Term Investment.
Retirements and Principal Payments
Schedule of Extinguishment of Debt [Table Text Block]
TOTAL LIABILITIES
Liabilities
Maximum Future Payments for Letters of Credit Issued Under the Uncommitted Facility
Maximum Future Payments for Letters of Credit Issued Under the Uncommitted Facility
Maximum future payments for Letters of Credit issued under the uncommitted facility.
Rock Falls Wind Facility
Rock Falls Wind Facility [Member]
Rock Falls Wind Facility
Total Long-Term Debt Due Within One Year
Total Long-Term Debt Due Within One Year [Member]
Total Long-Term Debt Due Within One Year
Mobile Generation Lease Payments
Mobile Generation Lease Payments [Member]
Mobile Generation Lease Payments
Property, Plant and Equipment
Property, Plant and Equipment Disclosure [Text Block]
Construction Expenditures
Payments for Construction in Process
Noncurrent Liabilities
Liabilities, Noncurrent [Abstract]
Return of Capital to Parent Cash Flows
Return of Capital to Parent Cash Flows
Return of Capital to Parent Cash Flows
Non-Rule 10b5-1 Arrangement Adopted
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Revolving Credit Facilities
Credit Facilities Structured
Amount of revolving credit facilities.
Additional Revenues Recognized to be Surcharged to Customers
Additional Revenues Recognized to be Surcharged to Customers
Increase in revenues recognized to be surcharged to customers
Total Commitment from Bank Conduits to Finance Receivables
Total Commitment From Bank Conduits To Finance Receivables
Total commitment from bank conduits to finance receivables.
Property, Plant and Equipment, Type [Domain]
Long-Lived Tangible Asset [Domain]
Related Party Transaction [Domain]
Related Party Transaction [Domain]
Welsh Plant Unit 1 and 3
Welsh Plant Unit 1 and 3 [Member]
Welsh Plant Unit 1 and 3 [Member]
Property, Plant and Equipment, Net
Public Utilities, Property, Plant and Equipment, Net
Notes Payable, Other Payable Six [Member]
Notes Payable, Other Payables Six [Member]
A written promise to pay a note to a third party.
Other Revenues [Member]
Other Revenues - Affiliated and Nonaffiliated [Member]
Other Revenues - Affiliated and Nonaffiliated.
Asset Retirement Obligation [Member]
Asset Retirement Obligation [Member]
Asset retirement obligation shown on the balance sheet
Public Utilities, Approved Rate Increase (Decrease), Amount
Public Utilities, Approved Rate Increase (Decrease), Amount
Securitized Debt for Receivables
Short-Term Debt, Weighted Average Interest Rate, at Point in Time
Awards Close in Time to MNPI Disclosures, Table
Awards Close in Time to MNPI Disclosures [Table Text Block]
Senior Unsecured Notes Three
Senior Unsecured Notes Three [Member]
Senior Unsecured Notes Three
2024-2025[Member]
2-3 Years [Member]
Time period in which fixed performance obligations will be satisfied.
Reversal of a Regulatory Provision
Reversal of a Regulatory Provision
Reversal of a Regulatory Provision.
TOTAL CURRENT ASSETS
Current Assets
Assets, Current
Short Term Debt
Schedule of Short-Term Debt [Table Text Block]
Preferred Stock [Member]
Preferred Stock [Member]
Pollution Control Bond [Member]
Pollution Control Bond [Member]
Pollution Control Bond [Member]
Net Periodic Benefit Cost (Credit)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Cash Flow Hedges [Member]
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Asset Impairments and Other Related Charges
Loss on the Expected/Completed Sale
Asset Impairment Charges
Estimated alternative CCR Investment
Estimated alternative CCR Investment
Estimated alternative CCR Investment
Supplementary Information
Supplemental Cash Flow Information [Abstract]
Current Long Term Debt [Domain]
Current Long Term Debt [Domain]
Current Long Term Debt [Domain]
Other Long Term Debt Thirteen
Other Long Term Debt Thirteen [Member]
Other Long Term Debt Thirteen
Money Pool Participant by Company Type [Domain]
Money Pool Participant by Company Type [Domain]
Money Pool Participant by Company Type [Domain]
Intervenor Recommended Base Rate Decrease Depreciation Expense
Intervenor Recommended Base Rate Decrease Depreciation Expense
Intervenor Recommended Base Rate Decrease Depreciation Expense
Short-term Debt, Type [Domain]
Short-Term Debt, Type [Domain]
Estimated Turk AFUDC Disallowance
Estimated Turk AFUDC Disallowance
Estimated Turk AFUDC Disallowance
Noncash Contribution of Assets to Cedar Creek Project
Contribution of Property
2020 Ohio Base Rate Case [Member]
2020 Ohio Base Rate Case [Member]
2020 Ohio Base Rate Case
Earnings Per Share
Earnings Per Share, Policy [Policy Text Block]
Balance Sheet Information
Segment Reporting Information, Additional Information [Abstract]
Independence Energy Connection Project [Member]
Independence Energy Connection Project [Member]
Independence Energy Connection Project
Apple Blossom and Black Oak [Member]
Apple Blossom and Black Oak [Member]
Apple Blossom and Black Oak
Oklahoma [Member]
Oklahoma [Member]
Oklahoma
Schedule of Accumulated Other Comprehensive Income (Loss)
Changes in Accumulated Other Comprehensive Income (Loss) by Component
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Property, Plant and Equipment (Textuals)
Property, Plant and Equipment (Textuals) [Abstract]
Property Plant And Equipment Textuals Abstract.
Disposal Group, Including Discontinued Operation, Other Liabilities, Current
Disposal Group, Including Discontinued Operation, Other Liabilities, Current
Short-term Contract with Customer [Member]
Short-Term Contract with Customer [Member]
Notes Payable, Other Payable Eight [Member]
Notes Payable, Other Payable Eight [Member]
Notes Payable, Other Payable Eight
State Income Tax, net of Federal Benefit
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
2023 Alt Two Under Recovery
2023 Alt Two Under Recovery
2023 Alternative Two Under Recovery
Regulatory Liabilities and Deferred Investment Tax Credits
Regulatory Liability, Noncurrent
Natural Gas [Member]
Natural Gas Contracts [Member]
Natural Gas Contract [Member]
Nominal energy measure used to calculate payments on a derivative instrument.
Other Postretirement Benefit Plans [Member]
Other Postretirement Benefits Plan [Member]
ReclassificationToAccumulatedOtherComprehensiveIncomeAxis [Axis]
Reclassification Into Accumulated Other Comprehensive Income [Axis]
Reclassification Into Accumulated Other Comprehensive Income
Net Cash Flows from (Used for) Operating Activities
Net Cash Provided by (Used in) Operating Activities
2022 Requested Increase in ENEC Rates
2022 Requested Increase in ENEC Rates
2022 Requested Increase in ENEC Rates
Entities [Table]
Entities [Table]
Share of Net Investment in Dolet Hills Power Station
Share of Net Investment in Dolet Hills Power Station
SWEPCo's share of the net investment in Dolet Hills Power Station.
Erroneously Awarded Compensation Recovery
Erroneously Awarded Compensation Recovery [Table]
Tangible Capital to Tangible Assets
Banking Regulation, Tangible Capital Ratio, Actual
Senior Unsecured Notes
Unsecured Debt
Amortization of Prior Service Cost (Credit)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Maximum and Minimum Interest Rates
Maximum and Minimum Interest Rates [Abstract]
Maximum and Minimum Interest Rates.
Affiliated Companies - Contracts with Customers
Accounts and Other Receivables, Net, Current
Gain (Loss) on Disposition of Other Assets
Gain (Loss) on Disposition of Other Assets
Award Timing, How MNPI Considered
Award Timing, How MNPI Considered [Text Block]
Money Pool Participants Money Pool Activity And Authorized Borrowing Limits
Money Pool Participants Money Pool Activity And Authorized Borrowing Limits [Abstract]
Money Pool Participants Money Pool Activity And Authorized Borrowing Limits [Abstract]
Entity Information [Line Items]
Entity Information [Line Items]
Assets and Liabilities Held for Sale related to KPCo
Assets and Liabilities Held for Sale related to KPCo
Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
OVEC ICPA Recommended Disallowance
OVEC ICPA Recommended Disallowance
OVEC ICPA Recommended Disallowance
Fair Value Of Derivative Liabilities Subject To Cross Acceleration Provisions
Fair Value Of Derivative Liabilities Subject To Cross Acceleration Provisions
Fair Value Of Derivative Liabilities Subject To Cross Acceleration Provisions
Commercial Paper [Member]
Commercial Paper [Member]
Consolidation Items [Axis]
Consolidation Items [Axis]
Cost of Removal Regulatory Liability
Cost of Removal Regulatory Liability
The regulatory liability recorded for cost of removal.
Senior Unsecured Notes Seven
Senior Unsecured Notes Seven [Member]
Senior Unsecured Notes Seven
Staff and Intervenor Recommended Storm Costs Regulatory Asset
Staff and Intervenor Recommended Storm Costs Regulatory Asset
Staff and Intervenor Recommended Storm Costs Regulatory Asset
Basis of Accounting
Basis Of Accounting [Text Block]
Description of the basis of accounting used to prepare the financial statements (for example, U.S. Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).
2023 Alt Two Major Storm Expense Deferrals
2023 Alt Two Major Storm Expense Deferrals
2023 Alternative Two Major Storm Expense Deferrals
Variable Interest Entities [Domain]
Variable Interest Entities [Domain]
Variable Interest Entities [Domain]
Cash Collateral Netting
Cash Collateral Netting [Abstract]
Cash collateral netting detail.
Maximum Shares Issued Under Equity Units Conversion
Maximum Shares Issued Under Equity Units Conversion
The maximum shares that can be issued related to AEP's Equity Units
Other Long Term Debt Nine
Other Long Term Debt Nine [Member]
Other Long Term Debt Nine
Commercial [Member]
Commercial [Member]
Retail revenues from the commercial class.
Variable Interest Entities
Variable Interest Entity Disclosure [Text Block]
Fair Value Of Derivative Liabilities Subject To Cross Default Provisions
Fair Value Of Derivative Liabilities Subject To Cross Default Provisions
Fair value of derivative liabilities subject to cross-default provisions.
Fuel Adjustment Clause Purchased Power Limitation [Member]
Fuel Adjustment Clause Purchased Power Limitation [Member]
Fuel Adjustment Clause Purchased Power Limitation
Retail, Trading and Marketing
Retail, Trading and Marketing [Member]
Retail, Trading and Marketing
Settlements
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases, Sales, Issues, Settlements
Virginia E-RAC
Virginia E-RAC [Member]
Virginia E-RAC
Quarter to Date
Quarter to Date [Member]
Quarter to Date
Property, Plant and Equipment, Type [Axis]
Long-Lived Tangible Asset [Axis]
Ash Pond Closure Revision [Member]
Ash Pond Closure Revision [Member]
Ash Pond Closure Revision
Commodity
Commodity:
Commodity [Abstract]
Commodity.
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Accounting Standards Update and Change in Accounting Principle [Abstract]
Expected Reimbursement for Spent Nuclear Fuel Dry Cask Storage
Expected Reimbursement For Spent Nuclear Fuel Dry Cask Storage
Future cash inflow for nuclear fuel dry cask storage reimbursement from the DOE.
Entity Emerging Growth Company
Entity Emerging Growth Company
Revised Requested Annual Increase
Revised Requested Annual Increase
Revised Requested Annual Increase
Term Loan 5
Term Loan 5 [Member]
Term Loan 5
Materials and Supplies
Other Inventory, Supplies, Gross
Other Noncurrent Assets [Member]
Other Noncurrent Assets [Member]
Corporate and Other
Corporate and Othr [Member]
Corporate and Othr
Deferred Tax Assets, Gross
Deferred Tax Assets, Gross
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation [Member]
Purchased Electricity for Resale [Member]
Purchased Electricity for Resale.
Public Service Co Of Oklahoma [Member]
Public Service Co Of Oklahoma [Member]
Public Service Company Of Oklahoma Member
Pay vs Performance Disclosure, Table
Pay vs Performance [Table Text Block]
Amount Exceeding Maximum Borrowings from Money Pool
Amount Exceeding Maximum Borrowings from Money Pool
Amount exceeding the Maximum Borrowings from a Money Pool at anytime during the period. The Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
Antidilutive Securities [Axis]
Antidilutive Securities [Axis]
Title
Trading Arrangement, Individual Title
Major Property Class [Domain]
Major Property Class [Domain]
Demand Side Management Programs
Demand Side Management Programs [Member]
Demand Side Management Programs
Net Equity Units Issuance Proceeds
Net Equity Units Issuance Proceeds
Net Equity Units proceeds after issuance costs.
Proceeds for KY Operations
Proceeds for KY Operations [Member]
Proceeds for KY Operations
Common Stock [Member]
Common Stock [Member]
Landfille Closure Revision [Member]
Landfille Closure Revision [Member]
Landfille Closure Revision
Senior Unsecured Notes Twelve
Senior Unsecured Notes Twelve [Member]
Senior Unsecured Notes Twelve
Amortization of Pension and OPEB Deferred Costs, Net of Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Individual:
Individual [Axis]
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Long-term Risk Management Assets
Derivative Asset, Noncurrent
Pollution Control Bond Nine
Pollution Control Bond Nine [Member]
Pollution Control Bond Nine
Beginning Balance
Ending Balance
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs
Amount of Approved Increase Related to Vegetation Management
Amount of Approved Increase Related to Vegetation Management
Amount of Approved Increase Related to Vegetation Management
Weighted Average Interest Rate
Debt, Weighted Average Interest Rate
Beginning Balance
Ending Balance
TOTAL EQUITY
Equity
Equity, Including Portion Attributable to Noncontrolling Interest
Common Stock Dividends
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
Pirkey Power Plant and Sabine Unbilled Fixed Costs
Pirkey Power Plant and Sabine Unbilled Fixed Costs
Pirkey Power Plant and Sabine unbilled fixed costs that will be billed to SWEPCo prior to closure.
Total Long-Term Debt Outstanding [Axis]
Total Long-Term Debt [Axis]
Total Long-Term Debt
Contested Joint Agreement Base Rate Annual Revenue Increase
Contested Joint Agreement Base Rate Annual Revenue Increase
Contested Joint Agreement Base Rate Annual Revenue Increase
Senior Unsecured Notes Nine
Senior Unsecured Notes Nine [Member]
Senior Unsecured Notes Nine
Requested annual Base Rate Incresae Depreciation Expense Portion
Requested annual Base Rate Incresae Depreciation Expense Portion
Requested Annual Base Rate Increase Depreciation Expense Portion
Minimum [Member]
Low [Member]
Minimum [Member]
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET
Net Investment
Net Property, Plant and Equipment
Property, Plant and Equipment, Net
AEP Share of Independence Energy Connection Capital Costs
AEP Share of Independence Energy Connection Capital Costs
AEP Share of Independence Energy Connection Capital Costs
Amount of Gain (Loss) Recognized on Risk Management Contracts
Schedule of Derivative Instruments Included in Trading Activities [Table Text Block]
2020-2022 Virginia Triennial Review [Member]
2020-2022 Virginia Triennial Review [Member]
2020-2022 Virginia Triennial Review
Other Comprehensive Income (Loss), Net of Tax, Total
Other Comprehensive Income (Loss)
Net Current Period Other Comprehensive Income (Loss)
Other Comprehensive Income (Loss), Net of Tax
Transmission and Distribution Utilities [Member]
Transmission and Distribution Utilities Revenues [Member]
Transmission and Distribution Utilities Revenues [Member]
Transmission and Distribution Revenues.
After 2027
After 5 Years [Member]
Time period in which fixed performance obligations will be satisfied.
Portion Expected to be Reclassified to Net Income During the Next Twelve Months
Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months
CCR/ELG Filings
CCR/ELG Filings [Member]
CCR/ELG Filings
Statement of Cash Flows [Abstract]
Statement of Cash Flows [Abstract]
Other Long Term Debt Seventeen
Other Long Term Debt Seventeen [Member]
Other Long Term Debt Seventeen
Fees Paid to AEP Credit for Customer Accounts Receivable Sold
Fees Paid to AEP Credit for Customer Accounts Receivable Sold [Text Block]
Fees paid to AEP Credit for customer accounts receivable sold.
Award Timing MNPI Disclosure
Award Timing MNPI Disclosure [Text Block]
Commodity [Member]
Commodity Contract [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Long term debt and other securities issued, retired and principal payments made [Abstract]
Long-term debt and other securities issued, retired and principal payments made.
Recovery of 2021 Dolet Hills Fuel Costs
Amount of Dolet Hills Fuel Costs Approved to Recover
Amount of Dolet Hills Fuel Costs Approved to Recover in 2021.
Issuance of Long-term Debt
Proceeds from Issuance of Long-Term Debt
Fair Value of Derivative Instruments
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Regulated Generating Units to be Retired
Regulated Generating Units to be Retired [Table Text Block]
Regulated Generating Units to be Retired.
2023 Staff and Intervenor Recommended Under Recovery
2023 Staff and Intervenor Recommended Under Recovery
2023 Staff and Intervenor Recommended Under Recovery
Staff Recommended Annual Rate Decrease
Staff Recommended Annual Rate Decrease
The staff's recommended annual rate decrease.
Net Cash Flows from (Used for) Financing Activities
Net Cash Provided by (Used in) Financing Activities
Retirement Plan Type [Axis]
Retirement Plan Type [Axis]
Pollution Control Bonds
Long-Term Pollution Control Bond
Other Investing Activities
Payments for (Proceeds from) Other Investing Activities
Retained Earnings [Member]
Retained Earnings [Member]
Trust Assets [Domain]
Trust Assets [Domain]
[Domain] for Trust Assets [Axis]
Damages Representing Lost Mining Fees for Sabine
Damages Representing Lost Mining Fees for Sabine
Damages Representing Lost Mining Fees for Sabine
FERC RTO Incentive Complaint [Member]
FERC RTO Incentive Complaint [Member]
FERC RTO Incentive Complaint
Long-term Debt Due Within One Year
Long-term Debt Due Within One Year
Long-Term Debt, Current Maturities
Maturity of Credit Facility [Axis]
Maturity of Credit Facility [Axis]
Maturity of Credit Facility
Adjustment to Non-PEO NEO Compensation Footnote
Adjustment to Non-PEO NEO Compensation Footnote [Text Block]
Trent and Desert Sky Wind Farms [Member]
Trent and Desert Sky Wind Farms [Member]
Trent and Desert Sky Wind Farms [Member]
Construction Expenditures Included in Current Liabilities as of September 30,
Construction in Progress Expenditures Incurred but Not yet Paid
Wind Generation MWs
WindGenerationMWs
Wind Generation (MWs)
Total Basic Earnings Per Share Attributable to AEP Common Shareholders
Earnings Per Share, Basic
Requested Securitization Bonds Under-Recovered Purchased Power Rider Costs
Requested Securitization Bonds Under-Recovered Purchased Power Rider Costs
Requested Securitization Bonds Under-Recovered Purchased Power Rider Costs
Energy Harbor [Member]
Energy Harbor [Member]
Energy Harbor
Accounting Policies [Abstract]
Accounting Policies [Abstract]
Storm Expenses to be Requested in Separate Filing
Storm Expenses to be Requested in Separate Filing
Storm Expenses to be Requested in Separate Filing
SaleOfStockNameOfTransactionDomain
Sale of Stock [Domain]
Gain on Sale of Mineral Rights
Gain (Loss) on Disposition of Assets
Gain (Loss) on Disposition of Assets
Erroneous Compensation Analysis
Erroneous Compensation Analysis [Text Block]
Regulatory Assets Currently Not Earning Return [Member]
Regulatory Assets Currently Not Earning Return [Member]
Regulatory Assets Currently Not Earning a Return
Interest Rate
Interest Rate [Abstract]
2023 Alt One Annual Increase in ENEC
2023 Alt One Annual Increase in ENEC
2023 Alternative One Annual Increase in ENEC
CCR Investment
CCR Investment
CCR Investment
Carrying Amount of Hedged Asset (Liability)
Carrying Amount of Hedged Asset (Liability)
Carrying Amount of Hedged Asset (Liability)
EQ Method Investments
EQ Method Investments
EQ Method Investments included in the plan of sale but still classified as Deferred Charges and Other NonCurrent Assets.
Reclassifications to AOCI, Current Period, before Tax, Attributable to Parent
Reclassifications to AOCI, Current Period, before Tax, Attributable to Parent
Reclassifications to AOCI, Current Period, before Tax, Attributable to Parent
TOTAL NONCURRENT LIABILITIES
Noncurrent Liabilities
Liabilities, Noncurrent
Nonutility [Member]
Nonutility [Member]
Nonutility Company.
Requested Weighted Average Cost of Capital
Requested Weighted Average Cost of Capital
Requested Weighted Average Cost of Capital
Proceeds from Issuance of Debt
Proceeds from Issuance of Debt
Senior Unsecured Notes Six
Senior Unsecured Notes Six [Member]
Senior Unsecured Notes Six
Common Stock Dividends
Affiliated Dividends Common Stock
Equity impact of aggregate cash, stock, and paid-in-kind dividends declared to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.
Document Transition Report
Document Transition Report
Award Timing Predetermined
Award Timing Predetermined [Flag]
Maximum Percentage Paid to Selling Agents
Maximum Percentage Paid to Selling Agents
Maximum percentage of gross offering proceeds of the shares sold which is paid to selling agents with respect to each equity distribution agreement.
Change in Fair Value Recognized in AOCI
Other Comprehensive Income Unrealized Gain Loss Arising During Period Net Of Tax
Net of tax amount, before reclassification adjustments, of the change in accumulated gain (loss).
Intervenor Recommended Opposition to Purchased Power Recovery
Intervenor Recommended Opposition to Purchased Power Recovery
Intervenor Recommended Opposition to Purchased Power Recovery
2020 Equity Units [Member]
2020 Equity Units [Member]
Equity Units issued in August 2020
Accounts Payable
Increase (Decrease) in Accounts Payable
Trust Assets for Decommissioning and Spent Nuclear Fuel Disposal
Trust Assets For Decommissioning And Spent Nuclear Fuel Disposal (Policy) [Text Block]
Element used to describe policy for trust assets for decommissioning and spent nuclear fuel disposal.
Fuel and Other Consumables Used for Electric Generation [Member]
Electricity, Generation [Member]
Derivative, Energy Notional Amount
Derivative Nonmonetary Energy Notional Amount
Volume of energy derivative contracts.
Obligation to Return Securities Received as Collateral
Cash Collateral Paid Netted Against Risk Management Liabilities
Obligation to Return Securities Received as Collateral
Average Interest Rates for Funds Borrowed From and Loaned to Money Pool
Average Interest Rates for Funds Borrowed From and Loaned to Money Pool [Abstract]
Average Interest Rates for Funds Borrowed From and Loaned to Money Pool.
Risk Management Contracts [Member]
Risk Management Commodity Contracts [Member]
Risk Management Commodity Contracts [Member]
Risk Management Contracts Member.
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Abstract]
Pirkey Power Plant Accelerated Depreciation
Pirkey Power Plant Accelerated Depreciation [Member]
Pirkey Power Plant Accelerated Depreciation
Pirkey Power Plant and Related Fuel Operations
Pirkey Power Plant and Related Fuel Operations [Member]
Pirkey Power Plant and Related Fuel Operations
Derivative Instrument [Axis]
Derivative Instrument [Axis]
Pollution Control Bond Six
Pollution Control Bond Six [Member]
Pollution Control Bond Six
All Trading Arrangements
All Trading Arrangements [Member]
Regulatory Asset Approved for Recovery
Regulatory Asset Approved for Recovery [Member]
Regulatory Asset Approved for Recovery
All Adjustments to Compensation
All Adjustments to Compensation [Member]
Junior Subordinated Debt [Member]
Junior Subordinated Debt [Member]
Glen Lyn Station [Member]
Glen Lyn Station [Member]
Glen Lyn Station
Compensation Amount
Outstanding Recovery Compensation Amount
Other Retail [Member]
Other Retail [Member]
Revenues from retail classes other than residential, commercial and industrial.
Redemption of Short-term Debt with Original Maturities Greater than 90 Days
Repayments of Short-Term Debt, Maturing in More than Three Months
Equity Method Investment, Nonconsolidated Investee [Axis]
Equity Method Investment, Nonconsolidated Investee [Axis]
Fixed Performance Obligations
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]
AFUDC Equity
Effective Income Tax Rate Reconciliation AFUDC Equity Percentage
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations due to AFUDC Equity.
Total Assets
Risk Management Assets
Derivative Asset
Debt and Equity Securities Within Other Temporary Investments
Debt and Equity Securities Within Other Temporary Investments [Text Block]
Debt and equity securities within Other Temporary Investments.
Deferred Income Taxes
Deferred Income Tax Expense (Benefit)
corporate alternative minimum tax
corporate alternative minimum tax
corporate alternative minimum tax
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Statement of Comprehensive Income [Abstract]
Statement of Comprehensive Income [Abstract]
Reconciling Adjustments [Member]
Consolidation Eliminations [Member]
Consolidation, Eliminations [Member]
Pledged Accounts Receivable - AEP Credit
Transfers Accounted for as Secured Borrowings, Assets, Carrying Amount
Capital Contributions from Parent
Proceeds from Contributions from Parent
Other Long Term Debt Sixteen
Other Long Term Debt Sixteen [Member]
Other Long Term Debt Sixteen
Securitization Bonds Three
Securitization Bonds Three [Member]
Securitization Bonds Three
Amortization Of Pension And Other Postretirement Benefit Plans
Amortization Of Pension And Other Postretirement Benefit Plans [Abstract]
Affiliated and Nonaffiliated [Member]
Affiliated and Nonaffiliated [Member]
Includes affiliated and nonaffiliated revenues.
Senior Unsecured Notes Ten
Senior Unsecured Notes Ten [Member]
Senior Unsecured Notes Ten
Requested Securitization Bonds Deferred Storm Costs
Requested Securitization Bonds Deferred Storm Costs
Requested Securitization Bonds Deferred Storm Costs
Dry Lake Solar Project [Member]
Dry Lake Solar Project [Member]
Dry Lake Solar Project
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Other Segments [Member]
All Other [Member]
Other Segments [Member]
Asset Retirement Obligation (ARO)
Schedule of Change in Asset Retirement Obligation [Table Text Block]
Revised Requested Net Annual Increase
Revised Requested Net Annual Increase
Revised Requested Net Annual Increase
Weighted Average Dilutive Effect of Shares
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements
Taxes Other Than Income Taxes
Taxes, Miscellaneous
Proceeds from Sale of Property, Plant, and Equipment
Proceeds from Sale of Property, Plant, and Equipment
June 2022 Storm Costs
June 2022 Storm Costs [Member]
June 2022 Storm Costs
Exchange [Domain]
Exchange [Domain]
Retail [Member]
Retail [Member]
Requested Debt Capital Structure
Requested Debt Capital Structure
Requested Debt Capital Structure
Term Loan
Other Borrowings
Kentucky Power Co [Member]
Kentucky Power Co [Member]
Kentucky Power Company Member
Document Period End Date
Document Period End Date
Adoption Date
Trading Arrangement Adoption Date
Approved Net Increase in Texas Annual Revenues
Approved Net Increase in Texas Annual Revenues
Net Increase in approved Texas Annual Revenues
Intervenor Recommended Annual Increase
Intervenor Recommended Annual Increase
Intervenor Recommended Annual Increase
Term Loan [Member]
Term Loan [Member]
Term Loan
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassifications from Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Member]
Notes Payable, Other Payable Three [Member]
Notes Payable, Other Payable Three [Member]
A written promise to pay a note to a third party.
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Income Tax Expense (Benefit)
Income Tax (Expense) Benefit
Income Tax Expense (Benefit)
Accounts Receivable and Accrued Unbilled Revenues
Receivable, Held-for-Sale [Abstract]
Proposed Previously Incurred Costs Expected to Recover
Proposed Previously Incurred Costs Expected to Recover
Proposed regulatory asset for previously incurred costs expected to recover
Fair Value Measurements
Fair Value Disclosures [Text Block]
Reclassification from AOCI, Net of Income Tax (Expense) Benefit
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Requested Equity Capital Structure
Requested Equity Capital Structure
Requested Equity Capital Structure
Maximum Potential Amount of Future Payments Associated with Guarantee
Maximum Potential Amount of Future Payments Associated with Guarantee
Maximum Potential Amount of Future Payments Associated with Guarantee
Advances to Affiliates
Net Loans To Money Pool
Other Receivables, Net, Current
Compensation Actually Paid vs. Company Selected Measure
Compensation Actually Paid vs. Company Selected Measure [Text Block]
Retail, Trading and Marketing Revenues [Member]
Marketing, Competitive Retail and Renewable [Member]
Marketing, Competitive Retail and Renewable [Member]
Mark-to-Market of Risk Management Contracts
Unrealized Gain (Loss) on Derivatives
Amortization of Net Actuarial Loss
Defined Benefit Plan, Amortization of Gain (Loss)
Rockport Lease [Member]
Rockport Lease [Member]
Lease Type One.
Intervenor Recommended Base Rate Storm Cost Removal
Intervenor Recommended Base Rate Storm Cost Removal
Intervenor Recommended Base Rate Storm Cost Removal
Cash and Cash Equivalents
Cash and Cash Equivalents at Beginning of Period
Cash and Cash Equivalents at End of Period
Cash and Cash Equivalents, at Carrying Value
TOTAL COMPREHENSIVE INCOME (LOSS)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
ALJ Recommended Disallowance
ALJ Recommended Disallowance
ALJ Recommended Disallowance
Industrial [Member]
Industrial [Member]
Retail revenues from the industrial class.
maturityofcreditfacility [Domain]
maturityofcreditfacility [Domain]
[Domain] for maturityofcreditfacility [Axis]
Total Long-Term Debt [Domain]
Total Long-Term Debt [Domain]
Total Long-Term Debt [Domain]
Liabilities Held for Sale
Disposal Group, Including Discontinued Operation, Liabilities, Current
Jointly Owned Utility Plant [Domain]
Jointly Owned Utility Plant [Domain]
Compensation Actually Paid vs. Other Measure
Compensation Actually Paid vs. Other Measure [Text Block]
Amounts Attributable to AEP Common Shareholders
Net Income (Loss) Available to Common Stockholders, Basic [Abstract]
Public Utilities General Disclosures [Table]
Public Utilities General Disclosures [Table]
Senior Unsecured Notes [Member]
Senior Unsecured Notes [Member]
A senior note is a bond that takes priority over other debt securities sold by the issuer, in the event the issuer goes bankrupt, senior debt holders receive priority for [must receive] repayment [prior] relative to junior and unsecured [general] creditors.
Dilutive Securities, Effect on Basic Earnings Per Share
Dilutive Securities 1
Includes adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.
Contingently Reedemable Performance Share Awards
Mezzanine Equity
The fair value as of the balance sheet date of contingently redeemable performance share awards.
Qualified Pension Contribution
Defined Contribution Plan Disclosures [Table Text Block]
Dolet Hills Power Station
Dolet Hills Power Station [Member]
Dolet Hills Power Station
Interest Rate Contract [Member]
Interest Rate Contract [Member]
Noncontrolling Interest Assumed - Dry Lake Solar Project
Noncash or Part Noncash Acquisition, Investments Acquired
Noncash Acquisitions Under Finance Leases
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability
Impact of Fair Value Hedges on the Condensed Balance Sheet
Impact of Fair Value Hedges on Balance Sheet [Table Text Block]
Impact of Fair Value Hedges on Condensed Balance Sheet [Table Text Block]
Regulated Operations [Abstract]
Regulated Operations [Abstract]
Revenue from Contract with Customer
Revenue from Contract with Customer [Text Block]
Transmission Operations [Member]
AEP Transmission Holdco [Member]
Transmission Operations [Member]
Transmission Operations Member.
Contract with Customer, Duration [Domain]
Contract with Customer, Duration [Domain]
LIABILITIES AND EQUITY
Variable Interest Carrying Amount Liabilities And Equity [Abstract]
Variable Interest Carrying Amount Liabilities And Equity.
Additional Paid-in Capital [Member]
Additional Paid-in Capital [Member]
Estimated ELG Costs
Estimated ELG Costs
Estimated ELG Costs
Weighted Average Dilutive Effect of:
Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract]
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Equity Earnings (Loss) of Unconsolidated Subsidiaries
Income (Loss) from Equity Method Investments
Transource Energy [Member]
Transource Energy [Member]
Transource Energy [Member]
Corporate Alternative Minimum Tax [Domain]
Corporate Alternative Minimum Tax [Domain]
Corporate Alternative Minimum Tax [Domain]
Cover [Abstract]
Cover [Abstract]
Maximum Interest Rate
Maximum Interest Rate
The maximum weighted-average interest rate of funds outstanding at that time, calculated on a daily basis, either borrowed from or loaned to a Money Pool during the period. The Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
Pension Costs
Pension Costs [Member]
March 2024
March 2023 [Member]
March 2023
Collateral Triggering Events [Abstract]
Collateral Triggering Events [Abstract]
Collateral Triggering Events Abstract.
Deferred Credits and Other Noncurrent Liabilities
Other Liabilities, Noncurrent
Fixed Performance Obligations
Revenue, Remaining Performance Obligation, Amount
Assets and Liabilities Held for Sale [Domain]
Assets and Liabilities Held for Sale [Domain]
Assets and Liabilities Held for Sale [Domain]
Reclassifications From Accumulated Other Comprehensive Income
Reclassifications From Accumulated Other Comprehensive Income [Abstract]
Distribution
Public Utilities, Property, Plant and Equipment, Distribution
Other Temporary Investments
Short-Term Investments
TOTAL EXPENSES
Operating Expenses
Business Segments
Segment Reporting Disclosure [Text Block]
Revenue, Performance Obligation
Revenue, Performance Obligation [Abstract]
March 2027
March 2026 [Member]
March 2026
Generating Units Probable of Abandonment [Member]
Generating Units Probable of Abandonment [Member]
Generating Units Probable of Abandonment [Member]
Net Increase (Decrease) in Cash and Cash Equivalents
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Regulated and Unregulated Operation [Domain]
Regulated and Unregulated Operation [Domain]
Requested Annual Increase
Requested Annual Increase
Requested annual increase.
Equity Component [Domain]
Equity Component [Domain]
Finance Lease, Liability, Current
Finance Lease, Liability, Current
State and Local Jurisdiction [Member]
State and Local Jurisdiction [Member]
Non-GAAP Measure Description
Non-GAAP Measure Description [Text Block]
Credit Downgrade Trigger Exposure
Credit Downgrade Trigger Exposure
Credit Downgrade Trigger Exposure from contracts with collateral triggering events
Regulation Status [Axis]
Regulation Status [Axis]
Long-term Debt
Long-Term Debt, Unclassified [Abstract]
2029 - 2033 [Member]
Maturity Period Four [Member]
Entity Current Reporting Status
Entity Current Reporting Status
Competitive Contracted Renewables
Competitive Contracted Renewables [Member]
Competitive Contracted Renewables
Regulated Status [Domain]
Regulated Status [Domain]
Regulated Status Domain
OPERATING INCOME (LOSS)
Operating Income (Loss)
Realized Investment Gains (Losses)
Realized Investment Gains (Losses)
Senior Unsecured Notes Eight
Senior Unsecured Notes Eight [Member]
Senior Unsecured Notes Eight
Amortization of Nuclear Fuel
Amortization of Nuclear Fuel
The expense charged against earnings for the periodic recognition of nuclear fuel usage.
Cash and Cash Equivalents [Member]
Cash and Cash Equivalents [Member]
Consolidated Entities [Domain]
Consolidated Entities [Domain]
Liabilities Incurred
Asset Retirement Obligation, Liabilities Incurred
Segments [Axis]
Segments [Axis]
AEP Credit, Inc. [Member]
AEP Credit, Inc. [Member]
AEP Credit, Inc. Variable Interest Entity Member
Securities Activity Within Decommissioning and SNF Trusts
Securities Activity Within Decommissioning and SNF Trusts [Abstract]
Securities Activity Within Decommissioning And Snf Trusts.
Maximum Future Payments for Letters of Credit [Abstract]
Maximum Future Payments for Letters of Credit [Abstract]
Proposed Settlement Annual Rate Increase
Proposed Settlement Annual Rate Increase
Proposed Settlement Annual Rate Increase
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Spent Nuclear Fuel and Decommissioning Trusts
Nuclear Fuel and Decommissioning Trusts [Abstract]
Nuclear Fuel and Decommissioning Trusts Abstract.
Awards Close in Time to MNPI Disclosures
Awards Close in Time to MNPI Disclosures [Table]
Other Long Term Debt Ten
Other Long Term Debt Ten [Member]
Other Long Term Debt Ten
Guarantor Obligations, Current Carrying Value
Guarantor Obligations, Current Carrying Value
Accounts Receivable:
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Rockport Plant, Unit 2 Operating Lease Amortization
Operating Lease Cost Rockport
Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability of Rockport Plant.
Regulatory Asset Return Disclosure [Axis]
Regulatory Asset Return Disclosure [Axis]
Regulatory Asset Return Disclosure Axis
North Central Wind Energy Facilities [Domain]
North Central Wind Energy Facilities [Domain]
North Central Wind Energy Facilities [Domain]
Consolidated Entities [Axis]
Consolidated Entities [Axis]
Net Income (Loss) Attributable to Noncontrolling Interests
Net Income (Loss) Attributable to Noncontrolling Interests
Net Income (Loss) Attributable to Noncontrolling Interest
Pay vs Performance Disclosure [Line Items]
Term Loan 4
Term Loan 4 [Member]
Term Loan 4
Impaired Long-Lived Assets Held and Used, Asset Name [Domain]
Impaired Long-Lived Assets Held and Used, Asset Name [Domain]
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Other Various Expenses
Other Various Expenses [Member]
Other Various Expenses
Regulatory Assets Pending Final Regulatory Approval
Schedule of Regulatory Assets [Table Text Block]
Underlying Security Market Price Change
Underlying Security Market Price Change, Percent
Staff Recommended Equity Capital Structure
Staff Recommended Equity Capital Structure
Staff Recommended Equity Capital Structure
Storm Related Costs - Louisiana
Storm Related Costs - Louisiana [Member]
Storm Related Costs - Louisiana
Maturity Of Fair Value Risk Management Contracts [Axis]
Maturity Of Fair Value Risk Management Contracts [Axis]
AEP Texas Transition Funding and Restoration Funding [Member]
AEP Texas Transition Funding and Restoration Funding [Member]
AEP Texas Transition and Restoration Funding [Member]
Other Long Term Debt Seven
Other Long Term Debt Seven [Member]
Other Long Term Debt Seven
Max Potential Loss on Master Lease Agreements
Max Potential Loss on Master Lease Agreements [Table Text Block]
Max potential loss on master lease agreements.
Financing Activities
Debt Disclosure [Text Block]
Statement of Stockholders' Equity [Abstract]
Statement of Stockholders' Equity [Abstract]
AEP Share Of ETT Cumulative Revenues Subject To Review
AEP Share Of ETT Cumulative Revenues Subject To Review
AEP's share of ETT's cumulative revenues, subject to review, based upon interim rate increases.
2022 Recommended ENEC Under-Recovery Disallowance
2022 Recommended ENEC Under-Recovery Disallowance
2022 recommended under-recovery disallowance in ENEC from intervenors.
Utility Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits
Utility Money Pool Participants Money Pool Activity And Authorized Borrowing Limits [Text Block]
Tabular disclosure of a Utility Money Pool participants' money pool activity and authorized borrowing limits including: (1) Maximum Borrowings from Utility Money Pool; (2) Maximum Loans to Utility Money Pool; (3) Average Borrowings from Utility Money Pool; (4) Average Loans to Utility Money Pool; (5) Net Loans (Borrowings) to/from Utility Money Pool as of the balance sheet date; (6) Authorized Short-term Borrowing Limit. The Utility Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain utility subsidiaries.
MNPI Disclosure Timed for Compensation Value
MNPI Disclosure Timed for Compensation Value [Flag]
Segment Reporting [Abstract]
Segment Reporting [Abstract]
Accounts Payable
Accounts Payable, Current
Accounts Payable, Current
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations and Disposal Groups [Abstract]
Restatement Determination Date:
Restatement Determination Date [Axis]
Contested Joint Agreement Interim Annual Base Rate Cumulative Revenue Increase
Contested Joint Agreement Interim Annual Base Rate Cumulative Revenue Increase
Contested Joint Agreement Interim Annual Base Rate Cumulative Revenue Increase
Corporate Debt [Member]
Corporate Debt Securities [Member]
Gross Amounts of Risk Management Assets/Liabilities Recognized [Member]
Gross Amounts of Risk Management Assets Liabilities Recognized [Member]
Gross Amounts of Risk Management Assets/Liabilities Recognized.
Change in Other Noncurrent Liabilities
Increase (Decrease) in Other Noncurrent Liabilities
U.S. Federal Statutory Rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
OtherLongTermDebtThree
OtherLongTermDebtThree [Member]
OtherLongTermDebtThree
Commitments and Contingencies
Commitments and Contingencies
Consolidated Assets and Liabilities of Variable Interest Entities
us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesAbstract [Abstract]
us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesAbstract
Transmission
Public Utilities, Property, Plant and Equipment, Transmission
Amount of Increase Related to Annual Amortization Expense
Amount of Increase Related to Annual Amortization Expense
Amount of Increase Related to Annual Amortization Expense
Other Asset Impairment Charges
Other Asset Impairment Charges
Construction Work in Progress
Construction in Progress, Gross
Money Pool Participant by Company Type [Axis]
Money Pool Participant by Company Type [Axis]
Money Pool Participant by Company Type.
Commitment from Bank Conduits to Finance Receivables
Commitment from Bank Conduits to Finance Receivables
A commitment from bank conduits to finance receivables.
Public Utility [Axis]
Public Utility [Axis]
State Transcos [Member]
State Transcos [Member]
State Transcos [Member]
Issuance of Common Stock
Proceeds from Issuance of Common Stock
Variable Interest Entities [Axis]
Variable Interest Entities [Axis]
Variable Interest Entities
Income Taxes
Income Tax Disclosure [Text Block]
ARO Type [Axis]
ARO Type [Axis]
ARO Type
Principal Amounts of Junior Subordinated Debt
Principal Amounts of Junior Subordinated Debt
Principal Amounts Of Junior Subordinated Debt. The dollar amount that notes are broken into.
Intervenor Recommended Opposition to Tax Related Regulatory Asset
Intervenor Recommended Opposition to Tax Related Regulatory Asset
Intervenor Recommended Opposition to Tax Related Regulatory Asset
Guarantor Obligations by Nature [Axis]
Guarantor Obligations, Nature [Axis]
Jointly Owned Utility Plant [Axis]
Jointly Owned Utility Plant [Axis]
ETT Interim Transmission Rates [Member]
ETT Interim Transmission Rates [Member]
ETT Interim Transmission Rates [Member]
BP Wind Energy
BP Wind Energy [Member]
BP Wind Energy [Member]
PEO Total Compensation Amount
PEO Total Compensation Amount
Securitization Bonds
Secured Debt
Present Value of Future Minimum Lease Payments, Sale Leaseback Transactions, Fiscal Year Maturity [Abstract]
Present Value of Future Minimum Lease Payments, Sale Leaseback Transactions, Fiscal Year Maturity [Abstract]
Hedging Relationship [Axis]
Hedging Relationship [Axis]
Approved Deferral of Dolet Hills Fuel Costs
Approved Deferral of Dolet Hills Fuel Costs
Approved Deferral of Dolet Hills Fuel Costs in 2021
AEP Wind Holdings LLC [Member]
AEP Wind Holdings LLC [Member]
AEP Wind Holdings LLC [Member]
Potential Cumulative ENEC Under Recovery Disallowance
Potential Cumulative ENEC Under Recovery Disallowance
Potential Cumulative ENEC Under Recovery Disallowance
Appalachian Consumer Rate Relief Funding [Member]
Appalachian Consumer Rate Relief Funding [Member]
Appalachian Consumer Rate Relief Funding [Member]
Average Borrowings from Money Pool
Average Borrowings from Money Pool
Average Borrowings from a Money Pool during the period. The Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
Opinion Recommended Disallowance Factor
Opinion Recommended Disallowance Factor
Opinion Recommended Disallowance Factor
Competitive Contracted Renewable Portfolio
Competitive Contracted Renewable Portfolio [Member]
Competitive Contracted Renewable Portfolio
Boat and Barge Leases [Member]
Boat and Barge Leases [Member]
Boat and Barge Leases [Member]
Trading Arrangements, by Individual
Trading Arrangements, by Individual [Table]
Level 3 [Member]
Fair Value, Inputs, Level 3 [Member]
Treasury Stock, Shares
Treasury Stock, Common, Shares
Regulatory Asset for Under-Recovered Fuel Costs
Regulatory Assets, Current
Regulatory Asset, Current
Maintenance Expense [Member]
Maintenance Expense [Member]
Maintenance expense.
Pollution Control Bond Three
Pollution Control Bond Three [Member]
Pollution Control Bond Three
Net Amounts of Assets/Liabilities Presented in the Statement of Financial Position [Member]
Net Amounts of Assets Liabilities Presented in Statement of Financial Position [Member]
Net Amounts of Assets/Liabilities Presented in the Statement of Financial Position.
Plant Retirement Costs - Unrecovered Plant [Member]
Plant Retirement Costs - Unrecovered Plant [Member]
Plant Retirement Costs - Unrecovered Plant [Member]
Non-PEO NEO Average Compensation Actually Paid Amount
Non-PEO NEO Average Compensation Actually Paid Amount
2022 Michigan Integrated Resource Plan Filing
2022 Michigan Integrated Resource Plan Filing [Member]
2022 Michigan Integrated Resource Plan Filing
Interest Income
Investment Income, Interest and Dividend
Long Term Debt, Fair Value
Long-Term Debt, Fair Value
Net Income (Loss)
Net Income (Loss)
TOTAL CURRENT LIABILITIES
Current Liabilities
Liabilities, Current
Supplementary Information
Supplementary Information [Text Block]
Supplementary Information.
Notional Volume of Derivative Instruments
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]
Derivative Contract [Domain]
Derivative Contract [Domain]
Changed Peer Group, Footnote
Changed Peer Group, Footnote [Text Block]
Public Utilities, General Disclosures [Abstract]
Public Utilities, General Disclosures [Abstract]
Company Selected Measure Name
Company Selected Measure Name
Commercial Paper
Commercial Paper
Accrued Interest
Interest Payable, Current
Power Participation Ratio
Power Participation Ratio
Power participation ratio
Long-term Debt Issuances
Long Term Debt and Other Securities Issued [Text Block]
This element may be used as a single block of text to encapsulate long-term debt and other securities issued during the period.
Hedged Liability, Discontinued Fair Value Hedge, Cumulative Increase (Decrease)
Hedged Liability, Discontinued Fair Value Hedge, Cumulative Increase (Decrease)
PJM Portion of Annual Revenue Increase
PJM Portion of Annual Revenue Increase
PJM Portion of Annual Revenue Increase
Rate Base
Rate Base [Member]
Rate Base
Noncash Acquisitions Under Finance Leases
Lease Obligation Incurred
Asset Retirement Obligation, Revision of Estimate
Asset Retirement Obligation, Revision of Estimate
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark [Domain]
Reclassifications of KPCo Pension and OPEB Regulatory Assets, Net of Tax
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent
Mitchell Power Plant
Mitchell Power Plant [Member]
Mitchell Power Plant
Cost of Goods and Services Sold
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation
Cost of Goods and Services Sold
Proceeds from Sale of Productive Assets
Proceeds from Sale of Productive Assets
Regulatory Liabilities [Member]
Regulatory Liabilities [Member]
Regulatory Liabilities.
2023 Indiana Base Rate Case [Member]
2023 Indiana Base Rate Case [Member]
2023 Indiana Base Rate Case
Nuclear Trust Fund Investments
Nuclear Trust Fund Investments [Text Block]
Nuclear trust fund investments.
Securitization Bonds Two [Member]
Securitization Bonds Two [Member]
A collateralized debt obligation (backed by pledge, mortgage or other lien on the entity's assets).
Southwestern Electric Power Co [Member]
Southwestern Electric Power Co [Member]
Southwestern Electric Power Company Member
Other Long Term Debt Fifteen
Other Long Term Debt Fifteen [Member]
Other Long Term Debt Fifteen
Name
Measure Name
Increase (Decrease) in Margin Deposits Outstanding
Increase (Decrease) in Margin Deposits Outstanding
Name
Forgone Recovery, Individual Name
Purchases of Investments
Payments to Acquire Short-Term Investments
Goodwill
Goodwill
Securitized Debt for Receivables - AEP Credit
Securitized Debt for Receivables
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount
Public Utilities, Approved Equity Capital Structure, Percentage
Public Utilities, Approved Equity Capital Structure, Percentage
Total MTM Derivative Contract Net Assets (Liabilities)
Derivative Assets (Liabilities), at Fair Value, Net
Minimum Interest Rate For Funds Borrowed
Minimum Interest Rate For Funds Borrowed
The minimum weighted-average interest rate of funds outstanding at that time, calculated on a daily basis, borrowed during the period.
Proceeds for KY Operations [Axis]
Proceeds for KY Operations [Axis]
Proceeds for KY Operations
Measurement Basis [Axis]
Measurement Basis [Axis]
Underlying Securities
Award Underlying Securities Amount
Contractual Maturities, Fair Value of Debt Securities
Debt Securities, Held-to-Maturity, Fair Value, Maturity [Abstract]
Net Book Value of Amos and Mountaineer Plants - Virginia
Net Book Value of Amos and Mountaineer Plants - Virginia
Net Book Value of Amos and Mountaineer Plants - Virginia
COVID-19 - West Virginia
COVID-19 - West Virginia [Member]
COVID-19 - West Virginia
Additional Settlement Liability if Cross Default Provision is Triggered
Assets Needed for Immediate Settlement, Aggregate Fair Value
Comprehensive Income
Comprehensive Income (Loss) Note [Text Block]
Notes Payable, Other Payable Nine
Notes Payable, Other Payable Nine [Member]
Notes Payable, Other Payable Nine
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Parent Company Loss Benefit
Effective Income Tax Rate Reconciliation Parent Company Loss Benefit Percentage
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations due to Parent Company Loss Benefit.
Change in Short-term Debt with Original Maturities less than 90 Days, Net
Proceeds from (Repayments of) Short-Term Debt, Maturing in Three Months or Less
Acquisitions of Nuclear Fuel
Payments for Nuclear Fuel
Subsidiaries [Member]
Subsidiaries [Member]
Common Stock, Dividends Per Share, Declared
Common Stock, Dividends, Per Share, Declared
Common Stock, No Par Value
Common Stock, No Par Value
Interest Rate (Variable)
Debt Instrument Interest Variable Rate
The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.
Flow Through
Effective Income Tax Rate Reconciliation Flow Through Percentage
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations due to Flow Through.
Level 3 Quantitative Information
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Rate Matters
Rate Matters
Describes all of the specific events that have or may impact rates and amortization of regulatory assets and liabilities (for example, pending or recently concluded regulatory proceedings, environmental requirements). Specifics may include quantifications related to rates, costs and earnings. Events may relate to rate moratoriums or price caps.
Obligations Under Operating Leases
Operating Lease, Liability, Noncurrent
Contractual Maturities, Fair Value of Debt Securities in Nuclear Trusts
Investments Classified by Contractual Maturity Date [Table Text Block]
Changes in Fair Value of Net Trading Derivatives and Other Investments
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Reclassification from AOCI, before Income Tax (Expense) Benefit
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax
Adjusted Cost of Debt Securities
Adjusted cost of debt securities
Adjusted cost of debt securities.
Requested Annual Base Rate Storm Level Restoration Expense
Requested Annual Base Rate Storm Level Restoration Expense
Requested Annual Base Rate Storm Level Restoration Expense
Environmental Expense Deferral - Virginia
Environmental Expense Deferral - Virginia [Member]
Environmental Expense Deferral - Virginia
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
2023 Alt Two Asset Securitization
2023 Alt Two Asset Securitization
2023 Alternative Two Asset Securitization
Asset Retirement Obligations
Asset Retirement Obligation and Environmental Cost [Policy Text Block]
Gross Unrealized Gains
Investment Owned, Unrecognized Unrealized Appreciation
Conesville Generating Station [Member]
Conesville Generating Station (Unit No. 4) [Member]
Conesville Generating Station (Unit No. 4) Member
Minimum Lease Payments, Sale Leaseback Transactions, within Two Years
Minimum Lease Payments, Sale Leaseback Transactions, within Two Years
OCC Staff and Intervenor Recommended Annual Revenue Change Range
OCC Staff and Intervenor Recommended Annual Revenue Change Range
OCC Staff and Intervenor Recommended Annual Revenue Change Range
Proceeds For Securitzation Bonds
Proceeds For Securitzation Bonds
Proceeds received for ODFA for ratepayer-backed securitization bonds.
Other Long Term Debt Eighteen
Other Long Term Debt Eighteen [Member]
Other Long Term Debt Eighteen
Welsh Plant Unit 2
Welsh Plant Unit 2 [Member]
Welsh Plant Unit 2
Margin Deposits
Margin Deposit Assets
Borrowings from Parent
Borrowings from Parent
Borrowings from Parent at period end. Parent represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
Northeastern Plant, Unit 3
Northeastern Plant, Unit 3 [Member]
Northeastern Plant, Unit 3
Book Values and Fair Values of Long-term Debt
Fair Value, by Balance Sheet Grouping [Table Text Block]
Product and Service [Domain]
Product and Service [Domain]
Other Performance Measure, Amount
Other Performance Measure, Amount
Servicing Contracts [Member]
Servicing Contracts [Member]
AEP Generating Company
AEP Generating Company [Member]
AEP Generating Company
Contracted Renewables GWs
Contracted Renewables GWs
Contracted Renewables GWs
Fuel, Materials and Supplies
Increase (Decrease) in Inventories
Forward Equity Purchase Contract Date
Forward Equity Purchase Contract Date
Forward Equity Purchase Contract Date
Staff Recommended Debt Capital Structure
Staff Recommended Debt Capital Structure
Staff Recommended Debt Capital Structure
Investing Activities
Net Cash Provided by (Used in) Investing Activities [Abstract]
Asset Retirement Obligations
Asset Retirement Obligation, Current
Pollution Control Bond Seven
Pollution Control Bond Seven [Member]
Pollution Control Bond Seven
2021 Projected ENEC Cost Incease
2021 Projected ENEC Cost Incease
2021 Projected ENEC Cost Incease
Consolidated Assets And Liabilities Of Variable Interest Entities
Consolidated Assets And Liabilities Of Variable Interest Entities [Table Text Block]
Schedule of consolidated assets and liabilities of variable interest entities.
Dolet Hills Power Station and Related Fuel Operations
Dolet Hills Power Station and Related Fuel Operations [Member]
Dolet Hills Power Station and Related Fuel Operations
Notes Payable, Other Payable Two [Member]
Notes Payable, Other Payable Two [Member]
A written promise to pay a note to a third party.
Liabilities Settled
Asset Retirement Obligation, Liabilities Settled
Corporate Alternative Minimum Tax
Corporate Alternative Minimum Tax [Member]
Corporate Alternative Minimum Tax
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Accrued Tax Benefits
Income Taxes Receivable, Current
Regulatory Asset Return Disclosure [Domain]
Regulatory Asset Return Disclosure [Domain]
Regulatory Asset Return Disclosure [Domain]
Interest Expense
Interest Expense
Interest Expense
Construction Expenditures Included in Noncurrent Liabilities as of September 30,
Capital Expenditures Incurred but Not yet Paid
Proceeds from Sale of Receivables to AEP Credit
Proceeds from Sale of Finance Receivables
Unbilled Receivables Related to Securitization, Sale of Accounts Receivable
Unbilled Receivables Related to Securitization, Sale of Accounts Receivable
The amount of revenue for work performed for which billing has not occurred related to securitization of accounts receivable.
Notes Payable, Other Payables [Member]
Notes Payable, Other Payables [Member]
Capital Contribution from Member
Adjustments to Additional Paid in Capital, Other
Trading Arrangement:
Trading Arrangement [Axis]
Ohio Power Co [Member]
Ohio Power Co [Member]
Ohio Power Company Member
Plant Retirement Costs - Asset Retirement Obligation Costs [Member]
Asset Retirement Obligation Related to Retired Plants [Member]
Asset Retirement Obligation Related to Retired Plants [Member]
Long-term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Entity File Number
Entity File Number
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Estimated Pretax Income Reduction
Estimated Pretax Income Reduction
Estimated Pretax Income Reduction
Liabilities assumed with Sempra Renewable LLC and Santa Rita East Acquisition
Noncash or Part Noncash Acquisition, Value of Liabilities Assumed
Effective Interest Rates on Securitization of Accounts Receivable
Effective Interest Rates on Securitization of Accounts Receivable
Effective interest rate on the amount owed for securitized accounts receivables.
Notes Payable, Other Payable Seven [Member]
Notes Payable, Other Payable Seven [Member]
Notes Payable, Other Payable Seven
Changes in Fair Value Allocated to Regulated Jurisdiction
Changes in Fair Value Allocated to Regulated Jurisdiction
This element represents total gains or losses for the period (realized and unrealized), arising from assets and liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are allocated to regulated jurisdictions.
Assets and Liabilities Held for Sale [Axis]
Assets and Liabilities Held for Sale [Axis]
Assets and Liabilities Held for Sale
Entity Shell Company
Entity Shell Company
Cedar Creek Project
Cedar Creek Project [Member]
Cedar Creek Project
Production Tax Credit Proceeds
Production Tax Credit Proceeds
Production Tax Credits (PTCs) resulting in cash proceeds.
Restatement Determination Date
Restatement Determination Date
Direct Borrowing Activity
Direct Borrowing Activity [Table Text Block]
[Table Text Block] for Tabular disclosure of the Direct borrowing participants; activity including: (1) Maximum borrowings from AEP; (2) Maximum Loans to AEP; (3) Average Borrowings from AEP; (4) Average Loans to AEP; (5) Borrowings from AEP as of the balance sheet date; (6) Loans to AEP as of the balance sheet date. Direct Borrowing represents centralized funding mechanism AEP uses to meet the short-term cash requirement of certain subsidiaries.
Share of Net Investment in Pirkey Power Plant
Share of Net Investment in Pirkey Power Plant
SWEPCo's share of the net investment in Pirkey Power Plant
2023 [Member]
Within Current Year [Member]
Maturity of risk management contracts within current year.
Guarantee Obligations Current Carrying Value Other Liabilities Noncurrent
GuaranteeObligationsCurrentCarryingValueOtherLiabilitiesNoncurrent
The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees under Other Noncurrent Liabilities.
Rule 10b5-1 Arrangement Adopted
Rule 10b5-1 Arrangement Adopted [Flag]
Cash, Cash Equivalents and Restricted Cash at Beginning of Period
Cash, Cash Equivalents and Restricted Cash at End of Period
Total Cash, Cash Equivalents and Restricted Cash
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents
Regulatory Assets Currently Earning Return [Member]
Regulatory Assets Currently Earning Return [Member]
Regulatory Assets Currently Earning a Return
Amount of Increase Related to Annual Depreciation Expense
Amount of Increase Related to Annual Depreciation Expense
The amount of requested increase related to annual depreciation expense.
Investment in CCR/ELG
Estimated CCR/ELG Costs
Estimated CCR/ELG Costs
Loans Payable [Member]
Loans Payable [Member]
Rockport Plant, Unit 2 Operating Lease Amortization
Operating Lease, Cost
Ohio
Ohio [Member]
Ohio
Beginning Balance, Shares
Ending Balance, Shares
Common Stock, Shares, Issued
Common Stock, Shares, Issued
Sales of Investment Securities
Proceeds from Sale, Maturity and Collection of Investments
Maximum Percentage Debt to Capitalization
Maximum Percentage Debt to Capitalization
Maximum level of debt to capitalization persuant to credit agreement leverage restrictions.
2022 Oklahoma Base Rate Case [Member]
2022 Oklahoma Base Rate Case [Member]
2022 Oklahoma Base Rate Case
Equity Method Ownership [Axis]
Equity Method Ownership [Axis]
Information by name of entity in which equity method ownership interest is disclosed.
Storm Related Costs [Member]
Storm Expense [Member]
Storm Costs [Member]
Total Assets
Assets, Fair Value Disclosure
Total Long-term Debt Outstanding
Total Long-term Debt Outstanding
Total Long-term Debt Outstanding
Long-Term Debt
FERC PJM Transmission Formula Rate Challenge [Member]
FERC PJM Transmission Formula Rate Challenge [Member]
FERC PJM Transmission Formula Rate Challenge
Recommended Disallowance
Recommended Disallowance
Recommended Disallowance
Guarantor Obligations, Current Carrying Value, Contingent Portion
Guarantor Obligations, Current Carrying Value, Contingent Portion
The contingent portion of the current carrying amount of the liability for the freestanding or embedded guarantee or each group of similar guarantees.
Cash Flow Hedges, Tax
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax
Other Financing Activities
Proceeds from (Payments for) Other Financing Activities
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Notes Payable, Other Payable Ten
Notes Payable, Other Payable Ten [Member]
Notes Payable, Other Payable Ten
Regulatory Assets Pending Final Regulatory Approval [Member]
Regulatory Assets Pending Final Regulatory Approval [Member]
Regulatory Assets Pending Final Regulatory Approval [Member]
Net Uncollectible Accounts Receivable Written Off
Net Uncollectible Accounts Receivable Written Off
Net uncollectible accounts receivable written off.
September 2022 Cumulative ENEC Under Recovery Balance
September 2022 Cumulative ENEC Under Recovery Balance
September 2022 Cumulative ENEC Under Recovery Balance
Contract with Customer, Duration [Axis]
Contract with Customer, Duration [Axis]
Employee Benefits and Pension Obligations
Employee Benefits and Pension Obligations
Element represents the noncurrent liability recognized on the balance sheet that is associated with employee benefit and pension obligations including, but not limited to, defined benefit pension plans, other postretirement defined benefit plans, deferred incentive compensation and other postemployment benefits.
Entity Address, Address Line One
Entity Address, Address Line One
Proceeds of Mineral Rights Sale
Proceeds of Mineral Rights Sale [Member]
Proceeds of Mineral Rights Sale
2023 Alt Two Annual Increase in ENEC Rates
2023 Alt Two Annual Increase in ENEC Rates
2023 Alternative Two Annual Increase in ENEC Rates
Amortization of Generation Deferrals
Amortization Of Generation Deferrals
Amortization Of Generation Deferrals
Amortizations related to recoveries of pre-2012 deferred fuel balances that are recovered by the Phase In Recovery Rider. Amortizations related to recoveries of deferred capacity costs that are recovered by the Retail Stability Rider ($4.00/MWh recovery of previously deferred OPCo capacity costs and previously deferred carrying costs per Case No. 14-1186-EL-RDR & March 2017 through June 2019 monthly amortization of remaining RSR capacity costs using the appropriate incremental rate multiplied by the current monthly RSR rider revenue).
Gross Realized Losses on Investment Sales
Gross Realized Losses On Investment Sales On Short Term Investment
Gross Realized Losses On Investment Sales On Short Term Investment.
Proprosed ESP Return on Common Equity
Proprosed ESP Return on Common Equity
Proprosed ESP Return on Common Equity
Provision for Refund-Nonaffiliated
Provision for Refund-Nonaffiliated
Provision for Refund-Nonaffiliated
Impairment Charge Welsh Plant, Unit 2
Impairment Charge Welsh Plant, Unit 2
Impairment recorded due to lack of return on Welsh Plant Unit 2.
Payment When Put in Service
Payment When Put in Service [Member]
Payment When Put in Service
Net Increase (Decrease) in Cash and Cash Equivalents
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect
Sabine Mining Co [Member]
Sabine Mining Co [Member]
Sabine Mining Company Variable Interest Entity Member
Interest Rate [Member]
Interest Rate [Member]
Interest Rate Member.
Other [Member]
Portion at Other than Fair Value Measurement [Member]
Provision for Refund
Accumulated Provisions For Rate Refunds
Refunds for costs collected in formula rates.
Accrued Taxes
Taxes Payable, Current
Other Property, Plant and Equipment
Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment
Intervenor Recommended Base Rate Boiler Maintenance Removal
Intervenor Recommended Base Rate Boiler Maintenance Removal
Intervenor Recommended Base Rate Boiler Maintenance Removal
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation [Member]
Electricity, Purchased [Member]
Subsequent Event [Member]
Subsequent Event [Member]
Maximum Minimum and Average Interest Rates for Funds Borrowed from and Loaned to AEP
Maximum Minimum and Average Interest Rates for Funds Borrowed from and Loaned to AEP [Table Text Block]
[Table Text Block] for Tabular disclosure of the maximum and minimum weighted-average interest rate, calculated on a daily basis and the average interest rates of funds borrowed from or loaned to AEP during the period. The Direct Borrowing represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
Contested Joint Agreement Return on Equity
Contested Joint Agreement Return on Equity
Contested Joint Agreement Return on Equity
Transmission And Distribution Utilities [Member]
Transmission And Distribution Companies [Member]
Transmission And Distribution Companies [Member]
Other Liabilities, Current
Other Liabilities, Current
Other Liabilities, Current
Income Statement [Abstract]
Income Statement [Abstract]
Rockport U2 Leasehold Improvements Net Book Value
Rockport U2 Leasehold Improvements Net Book Value
Rockport U2 Leasehold Improvements Net Book Value
Securitized Assets
Securitized Regulatory Transition Assets, Noncurrent
Issuance of Common Stock, Shares
Stock Issued During Period, Shares, New Issues
Stock Issued During Period, Shares, New Issues
Other Temporary Investments
Short-Term Investments [Abstract]
Insider Trading Policies and Procedures Adopted
Insider Trading Policies and Procedures Adopted [Flag]
Disposal Group, Including Discontinued Operation, Other Assets
Disposal Group, Including Discontinued Operation, Other Assets
Reclassification of KPCo Pension and OPEB Regulatory Assets from AOCI [Axis]
Reclassification of KPCo Pension and OPEB Regulatory Assets from AOCI [Axis]
Reclassification of KPCo Pension and OPEB Regulatory Assets from AOCI
Cash and Cash Equivalents
Cash and Cash Equivalents, Fair Value Disclosure
2021 Requested Increase in ENEC Revenues
2021 Requested Increase in ENEC Rates
2021 Requested Increase in ENEC Revenues
Components of Net Periodic Benefit Cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Total Liabilities
Risk Management Liabilities
Derivative Liability
Sundance [Member]
Sundance [Member]
Sundance
2020 Texas Base Rate Case [Member]
2020 Texas Base Rate Case [Member]
2020 Texas Base Rate Case
Current Cumulative ENEC Under Recovery
Current Cumulative ENEC Under Recovery
Current Cumulative ENEC Under Recovery
West Virginia
West Virginia [Member]
West Virginia
Notes Payable, Other Payable Five [Member]
Notes Payable, Other Payable Five [Member]
A written promise to pay a note to a third party.
Paid-in Captial
Members' Capital
Louisiana Jurisdiction [Member]
Louisiana Jurisdiction [Member]
Louisiana Jurisdiction
Equity Units Issued
Equity Units Issued
The amount of AEP Equity Units Issued in connection with the March 2019 issuance of Junior Subordinated Notes.
Entity Listings, Exchange [Axis]
Entity Listings, Exchange [Axis]
Fair Value Assets and Liabilities Measured on Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring Basis (Policy) [Text Block]
Element describes policy for fair value assets and liabilities measured on recurring basis.
Carrying Costs Income
Carrying Costs Income
Carrying Costs Income
Income recorded to accrue a return on certain regulatory assets as granted by a regulator.
Trust Fund Assets One Time Fee Obligation for Nuclear Fuel Disposition
Trust Fund Assets One Time Fee Obligation for Nuclear Fuel Disposition
Trust fund assets one time fee obligation for nuclear fuel disposition.
Maximum Value of Shares to be Issued Under ATM Program
Maximum Value of Shares to be Issued Under ATM Program
Maximum value of shares to be issued under ATM program of its common stock through an at-the-market offering program, including an equity forward sales component.
Return on Common Equity
Return on Common Equity [Member]
Return on Common Equity
Equity Method Investments
Equity Method Investments
Affiliated Long-term Debt Due Within One Year
Affiliated Long Term Debt Current
Total of the portions of the affiliated carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.
2016 Texas Base Rate Case [Member]
2016 Texas Base Rate Case [Member]
2016 Texas Base Rate Case [Member]
Other Investments
Other Investments [Member]
Financial Instrument [Axis]
Schedule of Trading Securities and Other Trading Assets, Major Types of Trading Securities and Assets [Axis]
Financial Instrument [Axis]
Change in Regulatory Assets
Change in Regulatory Assets
The increase (decrease) during the reporting period in regulatory assets.
Vertically Integrated Utilities [Member]
Vertically Integrated Utilities [Member]
Vertically Integrated Utilities [Member]
Authorized Short Term Borrowing Limit
Authorized Short Term Borrowing Limit
Authorized Short-term Borrowing Limit by regulatory orders.
2023 [Member]
Less Than 1 Year [Member]
Time period in which fixed performance obligations will be satisfied.
Vegetation Management Programs
Vegetation Management Programs [Member]
Vegetation Management Programs
Total Shareholder Return Amount
Total Shareholder Return Amount
2023 Alt One Current Year ENEC Increase
2023 Alt One Current Year ENEC Increase
2023 Alternative One Current Year ENEC Increase
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Adjustment To PEO Compensation, Footnote
Adjustment To PEO Compensation, Footnote [Text Block]
Requested Net Increase in Texas Annual Revenues
Requested Net Increase in Texas Annual Revenues
Requested net increase in Texas annual revenues.
Other Long Term Debt Fourteen
Other Long Term Debt Fourteen [Member]
Other Long Term Debt Fourteen
Acquisitions and Dispositions
Mergers, Acquisitions and Dispositions Disclosures [Text Block]
Fixed Income Funds [Member]
Fixed Income Funds [Member]
Amortization of Pension and OPEB Deferred Costs, Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax
Provision for Refund Affiliated
Provision for Refund Affiliated
Provision for Refund-Affiliated
Provision for Refund-Affiliated
Segments [Domain]
Segments [Domain]
Equity Units Annual Distribution Rate
Equity Units Annual Distribution Rate
Equity Units Annual Distribution Rate
Significant Unobservable Inputs for Level 3
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Consolidation Items [Domain]
Consolidation Items [Domain]
Retained Earnings
Retained Earnings (Accumulated Deficit)
Maverick [Member]
Maverick [Member]
Maverick
Proceeds from Investment Sales
Proceeds from Sale of Short-Term Investments
Contested Joint Agreement Equity Capital Structure
Contested Joint Agreement Equity Capital Structure
Contested Joint Agreement Equity Capital Structure
Variable Interest Entities [Abstract]
2023 Alt Two WV Amos and Mountaineer Book Value and CCR and ELG Investments
2023 Alt Two WV Amos and Mountaineer Book Value and CCR and ELG Investments
2023 Alternative Two WV Amos and Mountaineer Book Value and CCR and ELG Investments
Contested Joint Agreement Distribution Investments Recovery
Contested Joint Agreement Distribution Investments Recovery
Contested Joint Agreement Distribution Investments Recovery
Accounts Receivable and Accrued Unbilled Revenues
Accounts and Financing Receivables, Held-for-Sale
Average Interest Rates for Funds Borrowed from and Loaned to Utility Money Pool
Average Interest Rates For Funds Borrowed From And Loaned To Utility Money Pool [Text Block]
Tabular disclosure of the average interest rates for funds borrowed from and loaned to a Utility Money Pool. The Utility Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain utility subsidiaries.
Basis Point RTO Incentive
Basis Point RTO Incentive
Basis Point RTO Incentive
Noncash or Part Noncash Divestiture, Amount of Consideration Received
Noncash or Part Noncash Divestiture, Amount of Consideration Received
Current Assets
Assets, Current [Abstract]
Accounts Receivable Retained Interest and Pledged as Collateral Less Uncollectible Accounts
Accounts Receivable Retained Interest and Pledged as Collateral Less Uncollectible Accounts
Accounts receivables that have been pledged as collateral less uncollectible accounts as of the balance sheet date.
Accounts Receivable and Accrued Unbilled Revenues
Accounts Receivable, before Allowance for Credit Loss, Current
Kentucky Operations [Member]
Kentucky Operations [Member]
Kentucky Operations
Equity Method Investment, Nonconsolidated Investee [Domain]
Equity Method Investment, Nonconsolidated Investee [Domain]
Contested Joint Agreement Debt Capital Structure
Contested Joint Agreement Debt Capital Structure
Contested Joint Agreement Debt Capital Structure
Entity Address, State or Province
Entity Address, State or Province
Compensation Actually Paid vs. Total Shareholder Return
Compensation Actually Paid vs. Total Shareholder Return [Text Block]
Payment at Closing
Payment at Closing [Member]
Payment at Closing
Term Loan 3
Term Loan 3 [Member]
Term Loan 3
Notes Payable, Other Payable Four [Member]
Notes Payable, Other Payable Four [Member]
A written promise to pay a note to a third party.
Operating Activities
Net Cash Provided by (Used in) Operating Activities [Abstract]
2022 Approved Projected ENEC Rate Increase
2022 Approved Projected ENEC Rate Increase
2022 Approved Projected ENEC Rate Increase
Accrued Interest
Increase (Decrease) in Interest Payable, Net
Intervenor Recommended Base Rate Vegetation Management Removal
Intervenor Recommended Base Rate Vegetation Management Removal
Intervenor Recommended Base Rate Vegetation Management Removal
Accounts Receivable, Net
Increase (Decrease) in Accounts and Other Receivables
Securities Received as Collateral
Cash Collateral Received Netted Against Risk Management Assets
Securities Received as Collateral
Miscellaneous
Other Receivables
2023 Alt One Under Recovery
2023 Alt One Under Recovery
2023 Alternative One Under Recovery
Gain (Loss) on Fair Value Portion of Long Term Debt
Gain (Loss) on Fair Value Portion of Long Term Debt
Gain (Loss) on fair value portion of long-term debt.
Notes Payable
Notes Payable
Welsh Unit 1 and 3 Accelerated Depreciation
Welsh Unit 1 and 3 Accelerated Depreciation [Member]
Welsh Unit 1 and 3 Accelerated Depreciation
Arkansas
Arkansas [Member]
Arkansas
Reclassification of KPCo Pension and OPEB Regulatory Assets from AOCI
Reclassification of KPCo Pension and OPEB Regulatory Assets from AOCI [Member]
Reclassification of KPCo Pension and OPEB Regulatory Assets from AOCI
Type of Expense [Axis]
Nature of Expense [Axis]
Advances From Affiliates
Net Borrowings from Money Pool
Other Short-Term Borrowings
Other
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Stand Alone Treatment of NOLCs Annual Revenue Increase
Stand Alone Treatment of NOLCs Annual Revenue Increase
Stand Alone Treatment of NOLCs Annual Revenue Increase
Parent Ownership Interest In ETT
Parent Ownership Interest In ETT
Parents equity ownership interest in ETT.
Requested Purchased Power Costs Not Recoverable Through FAC Recovery
Requested Purchased Power Costs Not Recoverable Through FAC Recovery
Requested Purchased Power Costs Not Recoverable Through FAC Recovery
Earnings Attributable to Common Shareholders
Net Income (Loss)
Net Income (Loss) Available to Common Stockholders, Basic
Effective Income Tax Rate
Effective Income Tax Rate Reconciliation, Percent
Operating Lease, Liability
Operating Lease, Liability
Staff Recommended Return on Common Equity
Staff Recommended Return on Common Equity
The staff's recommended return on common equity.
Purchased Electricity from AEP Affiliates
Cost of Purchased Power from Affiliate
Cost of electricity purchased as well as fuel used to generate electricity used in operations and sold during the reporting period from affiliate.
Estimated Reduced Annual Revenues
Estimated Reduced Annual Revenues
Estimated Reduced Annual Revenues
Total Shareholder Return Vs Peer Group
Total Shareholder Return Vs Peer Group [Text Block]
Other Short-term Debt
Short-Term Bank Loans and Notes Payable
Accumulated Other Comprehensive Income [Member]
AOCI Attributable to Parent [Member]
Aggregate Erroneous Compensation Amount
Aggregate Erroneous Compensation Amount
Alternative CCR/ELG Investment
Estimated alternative CCR/ELG Investment
Estimated alternative CCR/ELG Investment
Book Values and Fair Values of Long - term Debt
Long-Term Debt, Other Disclosure [Abstract]
All Executive Categories
All Executive Categories [Member]
Maximum Interest Rate For Funds Loaned
Maximum Interest Rate For Funds Loaned
The maximum weighted-average interest rate of funds outstanding at that time, calculated on a daily basis, loaned during the period.
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Pension and OPEB [Member]
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Other Regulatory Assets Not Yet Being Recovered [Member]
Other Regulatory Assets Not Yet Being Recovered [Member]
Other Regulatory Assets Not Yet Being Recovered
Debt Disclosure [Abstract]
Debt Disclosure [Abstract]
Generation
Public Utilities, Property, Plant and Equipment, Generation or Processing
Ohio ESP Filings [Member]
Ohio ESP Filings [Member]
Ohio ESP Filings
Gross Unrealized Losses
Investment Owned, Unrecognized Unrealized Depreciation
2021 Cumulative ENEC Under Recovery
2021 Cumulative ENEC Under Recovery
2021 Cumulative ENEC Under Recovery
Earnings Per Share
Basic and Diluted EPS Calculations
Earnings Per Share [Abstract]
AEP Transmission Co [Member]
AEP Transmission Co [Member]
AEP Transmission Company, LLC.
Pretax Reduction in Investment Basis
Pretax Reduction in Investment Basis
Pretax Reduction in Investment Basis
Common Stock
Common Stock, Value, Issued
2012 Texas Base Rate Case [Member]
2012 Texas Base Rate Case [Member]
2012 Texas Base Rate Case [Member]
2021 Arkansas Rate Case
2021 Arkansas Rate Case [Member]
2021 Arkansas Rate Case
Customer Accounts Receivable Managed Portfolio
Customer Accounts Receivable Managed Portfolio [Abstract]
Customer accounts receivable managed portfolio.
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Amount of Cash Collateral Posted
Collateral Already Posted, Aggregate Fair Value
Intervenor Recommended Return on Equity
Intervenor Recommended Return on Equity
Intervenor Recommended Return on Equity
2027 - 2028 [Member]
Maturity Period 3 [Member]
Cross Acceleration Provisions Maximum Third Party Obligation Amount
Cross Acceleration Provisions Maximum Third Party Obligation Amount
Cross Acceleration Provisions Maximum Third Party Obligation Amount
Wholesale Transmission [Member]
Wholesale Transmission [Member]
Wholesale Transmission.
New Accounting Standards
Accounting Standards Update and Change in Accounting Principle [Table Text Block]
Principal Payments for Finance Leases Obligations
Finance Lease, Principal Payments
Requested Fuel Cost Deferral
Requested Fuel Cost Deferral
Requested fuel cost deferral amount in filing.
CashCollateralNettingTableTextBlock
CashCollateralNettingTableTextBlock [Table Text Block]
Cash Collateral Netting Table
Approved Deferred Storm Costs
Approved Deferred Storm Costs
Approved Deferred Storm Costs
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Abstract]
All Individuals
All Individuals [Member]
Notional Amount of a Discontinued Hedge
Notional Amount of a Discontinued Hedge
Notional Amount of a Discontinued Hedge
Proceeds of Mineral Rights Sale [Axis]
Proceeds of Mineral Rights Sale [Axis]
Proceeds of Mineral Rights Sale
Other Income
Other Nonoperating Income (Expense)
Entity Filer Category
Entity Filer Category
Intervenor Recommended WACC
Intervenor Recommended WACC
Intervenor Recommended WACC
Non-PEO NEO Average Total Compensation Amount
Non-PEO NEO Average Total Compensation Amount
Statement [Table]
Statement [Table]
Current Fiscal Year End Date
Current Fiscal Year End Date
Proceeds of Mineral Rights Sale [Domain]
Proceeds of Mineral Rights Sale [Domain]
Proceeds of Mineral Rights Sale [Domain]
Requested Return on Equity
Requested Return on Equity
Requested return on equity.
Uncommitted Facility
Uncommitted Facility
Amount of letters of credit drawn on an uncommitted credit facility.
Unrealized Gain (Loss) Included in Net Income (or Changes in Net Assets) Relating to Assets Still Held at the Reporting Date
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss)
Schedule of Effective Income Tax Rate Reconciliation
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Major Property Class [Axis]
Major Property Class [Axis]
Hedging Contracts [Member]
Hedging Contracts [Member]
PEO Name
PEO Name
Recognition Period [Domain]
Recognition Period [Domain]
[Domain] for Recognition Period [Axis]
Utility Plant [Domain]
Utility Plant [Domain]
Liabilities Subject to Cross Default Provisions
Cross Default Provision [Text Block]
Tabular disclosure of liabilities subject to cross default provisions.
Sub-Limit of Secured Debt
Sub-Limit of Secured Debt
The amount of secured debt as a sub-limit to the amount of contractually defined priority debt as defined in the covenants for AEPTCo's note purchase agreements and indenture.
Public Utilities, Approved Debt Capital Structure, Percentage
Public Utilities, Approved Debt Capital Structure, Percentage
ASSETS
Variable Interest Carrying Amount Assets [Abstract]
Variable Interest Carrying Amount Assets.
Derivative, Volume Notional Amount
Derivative Nonmonetary Volume Notional Amount
Volume of heating oil and gasoline derivative contracts.
Short-term Debt:
Short-Term Debt [Abstract]
Bad Debt Reserves Related to Securitization, Sale of Accounts Receivable
Bad Debt Reserves Related to Securitized Sale of Accounts Receivable
A valuation allowance for securitized receivables that are expected to be uncollectible.
Restricted Stock Units and Performance Share Units [Member]
Restricted Stock Units and Performance Share Units [Member]
2021 Approved ENEC Rate Increase
2021 Approved ENEC Rate Increase
2021 Approved ENEC Rate Increase
Pollution Control Bond Four
Pollution Control Bond Four [Member]
Pollution Control Bond Four
Preferred Stock 2
Preferred Stock 2 [Member]
Preferred Stock 2
Interest Rate (Percentage)
Debt Instrument, Interest Rate, Stated Percentage
Statement of Financial Position [Abstract]
Statement of Financial Position [Abstract]
Gain (Loss) on Disposition of Business
Gain (Loss) on Disposition of Business
TOTAL COMMON SHAREHOLDER'S EQUITY
Equity, Attributable to Parent
Assets Held for Sale
Disposal Group, Including Discontinued Operation, Assets, Current
Debt and Equity Securities Within Other Temporary Investments
Debt and Equity Securities Within Other Temporary Investments [Abstract]
Activity for our debt and equity securities within Other Temporary Investments.
Renewable Generation [Member]
Renewable Generation [Member]
Renewable Generation
Accelerated Depreciation Regulatory Asset
Accelerated Depreciation
The amount of accelerated depreciation as a regulatory asset for plants to be retired.
Capitalization and Amortization of Fuel Costs, Policy
Capitalization and Amortization of Fuel Costs, Policy [Policy Text Block]
Securitization Bonds [Member]
Securitization Bonds [Member]
A collateralized debt obligation (backed by pledge, mortgage or other lien on the entity's assets).
Sensitivity of Fair Value Measurements
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Spent Nuclear Fuel and Decommissioning Trusts
Fair Value
Spent Nuclear Fuel And Decommissioning Trusts
Funds to pay for the disposal of spent nuclear fuel and the decontaminating and decommissioning of nuclear facilities through the collection of revenues from rate payers.
Vertically Integrated Utilities [Member]
Vertically Integrated Utilities [Member]
Electricity [Member]
Revenues from Related Parties, Net of Provisions for Refund
Revenues from Related Parties, Net of Provisions for Refund
Revenues from Related Parties, Net of Provisions for Refund
Mutual Funds Equity [Member]
Mutual Fund [Member]
Valuation Techniques
Fair Value Measurement, Policy [Policy Text Block]
Pirkey Power Plant and Dolet Hills Power Station
Pirkey Power Plant and Dolet Hills Power Station [Member]
Pirkey Power Plant and Dolet Hills Power Station
Level 2 [Member]
Fair Value, Inputs, Level 2 [Member]
Realized and Unrealized Gains (Losses) Included in Other Comprehensive Income
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)
2023 Approved Annual Increase in ENEC Rates
2023 Approved Annual Increase in ENEC Rates
2023 Approved Annual Increase in ENEC Rates
The NASDAQ Stock Market LLC
NASDAQ - ALL MARKETS [Member]
Commitments, Guarantees and Contingencies (Textuals) [Abstract]
Commitments Guarantees And Contingencies Textuals [Abstract]
Commitments, Guarantees and Contingencies.
Amortization of Prior Service Cost (Credit)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax
Maximum Term for Exposure to Variability of Future Cash Flows
Maximum Length of Time Hedged in Price Risk Cash Flow Hedge
Approved Return on Common Equity
Public Utilities, Approved Return on Equity, Percentage
Approved Additional Vegetation Management Expenses
Approved Additional Vegetation Management Expenses
Increase in approved additional vegetation management expenses
Gain (Loss) on Hedging Instruments
Derivative Instruments, Gain (Loss) [Table Text Block]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Named Executive Officers, Footnote
Named Executive Officers, Footnote [Text Block]
Proposed Adjustments [Axis]
Proposed Adjustments [Axis]
Proposed Adjustments
Reclassifications To Accumulated Other Comprehensive Income [Member]
Reclassifications To Accumulated Other Comprehensive Income [Member]
Reclassifications To Accumulated Other Comprehensive Income
Other Long Term Debt Eleven
Other Long Term Debt Eleven [Member]
Other Long Term Debt Eleven
Document Fiscal Period Focus
Document Fiscal Period Focus
Weighted Average [Member]
Weighted Average [Member]
Net Under-Recovered Fuel Costs
Net Under-Recovered Fuel Costs
Net Under-Recovered Fuel Costs
Traverse [Member]
Traverse [Member]
Traverse
Affiliated Accounts Receivable Contracts with Customers
Affiliated Accounts Receivable Contracts with Customers [Table Text Block]
Tabular disclosure of affiliated accounts receivable contracts with customers.
Proceeds from Sale of Receivables
Proceeds from Sale and Collection of Receivables [Abstract]
Proceeds for KY Operations [Domain]
Proceeds for KY Operations [Domain]
Proceeds for KY Operations [Domain]
Plant Retirement Costs - Unrecovered Plant, Louisiana
Plant Retirement Costs - Unrecovered Plant, Louisiana [Member]
Plant Retirement Costs - Unrecovered Plant, Louisiana.
Nonutility Money Pool Activity
Nonutility Money Pool Activity [Table Text Block]
Tabular disclosure of a Nonutility Money Pool participants' money pool activity including: (1) Maximum Loans to Nonutility Money Pool; (2) Average Loans to Nonutility Money Pool; (3) Net Loans (Borrowings) to/from Nonutility Money Pool as of the balance sheet date. The Nonutility Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain nonutility subsidiaries.
City Area Code
City Area Code
Energy Contracts [Member]
Energy Contracts [Member]
Risk management commodity contracts whose primary underlying risk is tied energy contracts.
Earnings Per Share
Earnings Per Share [Text Block]
Product and Service [Axis]
Product and Service [Axis]
Minimum Interest Rate
Minimum Interest Rate
The minimum weighted-average interest rate of funds outstanding at that time, calculated on a daily basis, either borrowed from or loaned to a Money Pool during the period. The Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
Oklaunion Purchase Power Agreement - Current
Oklaunion Purchase Power Agreement - Current
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 current liability portion of the lease.
Shares Per Equity Unit
Shares Per Equity Unit
Amount of shares issued per equity unit at maturity
Equity Method Investment, Ownership Percentage
Equity Method Investment, Ownership Percentage
Document Fiscal Year Focus
Document Fiscal Year Focus
Other Cash Deposits [Member]
Other Cash Deposits [Member]
Other Cash Deposits
Equity Method Ownership [Domain]
Equity Method Ownership [Domain]
Equity Method Ownership [Domain]
Regulatory Assets Return Disclosure [Domain]
Regulatory Assets Return Disclosure [Domain]
Regulatory Assets Return Disclosure Domain
2026-2027 [Member]
4-5 Years [Member]
Time period in which fixed performance obligations will be satisfied.
Amount of Increase Related to Vegetation Management
Amount of Increase Related to Vegetation Management
The amount of requested increase related to vegetation management.
Base Rate [Axis]
Base Rate [Axis]
Base Rate Axis.
After 5 years through 10 years
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Fair Value
FERC Matter [Axis]
FERC Matter [Axis]
FERC Matter
Other Operation
Utilities Operating Expense, Operations
Total Basis Point Band for Authorized Return on Equity
Total Basis Point Band for Authorized Return on Equity
The total range of basis points for the authorized ROE when considering excess earnings.
Future Minimum Lease Payments for Sale and Leaseback
Future Minimum Lease Payments for Sale and Leaseback [Table Text Block]
Future Minimum Lease Payments for sale-and-leaseback.
Exercise Price
Award Exercise Price
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Reverse Common Stock Split
Reverse Common Stock Split
Reverse Common Stock Split to reduce the number of shares
Additional Recognized Expenses Consisting Primarily of Depreciation and Vegetation Management
Additional Recognized Expenses Consisting Primarily of Depreciation and Vegetation Management
Increase in recognized expenses consisting primarily of depreciation and vegetation management
Net Income (Loss)
Net Income (Loss)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Appalachian Power Co [Member]
Appalachian Power Co [Member]
Appalachian Power Company Member
Net Cash Paid (Received) for Income Taxes
Income Taxes Paid, Net
Derivatives and Hedging (Textuals) [Abstract]
Derivatives and Hedging Textuals [Abstract]
Derivatives and Hedging Textuals
Commitments, Guarantees and Contingencies
Commitments Contingencies and Guarantees [Text Block]
Net of Affiliated Provisions for Refund [Axis]
Net of Affiliated Provisions for Refund [Axis]
Net of Affiliated Provisions for Refund
Average Interest Rate For Funds Borrowed
Average Interest Rate For Funds Borrowed
The average interest rate for funds borrowed from a Money Pool during the period. The Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
Generation and Marketing [Member]
Generation and Marketing Revenues [Member]
Generation and Marketing Revenues [Member]
Generation and Marketing Revenues.
Reclassification of KPCo Pension and OPEB Regulatory Assets from AOCI [Domain]
Reclassification of KPCo Pension and OPEB Regulatory Assets from AOCI [Domain]
Reclassification of KPCo Pension and OPEB Regulatory Assets from AOCI [Domain]
TOTAL LIABILITIES AND EQUITY
Total Liabilities and Equity
Liabilities and Equity
Authorized Annual Base Rate Increase
Authorized Annual Base Rate Increase
Authorized Annual Base Rate Increase
Change in Advances from Affiliates, Net
Increase (Decrease) in Notes Payable, Related Parties
Deferred Charges and Other Noncurrent Assets
Other Assets, Noncurrent
Allowance for Equity Funds Used During Construction
Allowance for Equity Funds Used During Construction
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity
Peer Group Total Shareholder Return Amount
Peer Group Total Shareholder Return Amount
Operating Lease Assets
Operating Lease, Right-of-Use Asset
Depreciation and Amortization
Utilities Operating Expense, Depreciation and Amortization
Equity Valuation Assumption Difference, Footnote
Equity Valuation Assumption Difference, Footnote [Text Block]
Other Long Term Debt [Member]
Other Long Term Debt [Member]
Other long term debt member
Comparative Accounts Receivable Information
Comparative Accounts Receivable Information [Text block]
Comparative accounts receivable information.
Other than Temporary Impairment Losses, Investments
Other than Temporary Impairment Losses, Investments
Heating Oil and Gasoline [Member]
Heating Oil And Gasoline Contract Member [Member]
Nominal volume used to calculate payments on a derivative instrument.
Securitization Bonds Four
Securitization Bonds Four [Member]
Securitization Bonds Four
Arrangement Duration
Trading Arrangement Duration
Equity Units [Domain]
Equity Units [Domain]
Equity Units issued as Corporate Units
Regulatory Assets [Member]
Regulatory Assets [Member]
Regulatory Assets.
Beginning Balance
Ending Balance
TOTAL MEMBER'S EQUITY
Members' Equity
Entity Address, City or Town
Entity Address, City or Town
Award Timing MNPI Considered
Award Timing MNPI Considered [Flag]
Notes Payable, Other Payable Eleven
Notes Payable, Other Payable Eleven [Member]
Notes Payable, Other Payable Eleven
Reportable Segment Information
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Related Party
Related Party [Member]
Oklaunion Power Station Accelerated Depreciation [Member]
Oklaunion Power Station Accelerated Depreciation [Member]
Oklaunion Power Station Accelerated Depreciation [Member]
Max Potential Loss on Master Lease Agreements
Max Potential Loss on Master Lease Agreements
Maximum potential loss on master lease agreements.
AEP Texas Cumulative Revenues Subject to Review
AEP Texas Cumulative Revenues Subject to Review
AEP Texas cumulative revenues, subject to review, based upon interim rate increases received.
Potential Disallowed Costs
Potential Disallowed Costs
Potential Disallowed Costs
Termination Date
Trading Arrangement Termination Date
DCC Fuel [Member]
DCC Fuel [Member]
DCC Fuel Variable Interest Entity Member
Common Stock, Shares Authorized
Common Stock, Shares Authorized
Fuel
Inventory, Raw Materials, Gross
Total Short-term Debt
Short-Term Debt
Letters of Credit [Member]
Letters of Credit [Member]
Letters of Credit Member.
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Amount of Increase Related to North Central Wind Facilities
Amount of Increase Related to North Central Wind Facilities
Amount of Increase Related to North Central Wind Facilities
Wholesale Generation [Member]
Wholesale Generation [Member]
Wholesale Generation.
Voluntary Retirement Incentive Program [Abstract]
Voluntary Retirement Incentive Program [Abstract]
Voluntary Retirement Incentive Program
Held For Sale
Held For Sale [Member]
Held For Sale [Member]
Staff Calculated Revenue Deficiency
Staff Calculated Revenue Deficiency
Amount of revenue deficiency calculated by staff.
North Central Wind Energy Facilities
North Central Wind Energy Facilities [Member]
North Central Wind Energy Facilities
Amount of Increase Related to Storm Catastrophe Reserve
Amount of Increase Related to Storm Catastrophe Reserve
The amount of requested increase related to a storm catastrophe reserve.
Adjustments to Reconcile Net Income to Net Cash Flows from (Used for) Operating Activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Reduction in Fuel Costs
Reduction in Fuel Costs
Reduction in Fuel Costs
Reclassifications of KPCo Pension and OPEB Regulatory Assets, Tax
Reclassification from AOCI, Current Period, Tax
Award Timing Disclosures [Line Items]
Average Loans to Money Pool
Average Loans to Money Pool
Average Loans to a Money Pool during the period. The Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
Equity Distribution Agreement
Equity Distribution Agreement [Member]
Equity Distribution Agreement.
FERC Matter [Domain]
FERC Matter [Domain]
FERC Matter
Senior Unsecured Notes Four
Senior Unsecured Notes Four [Member]
Senior Unsecured Notes Four
Total Comprehensive Income (Loss) Attributable to Noncontrolling Interest
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Gain (Loss) on Investments
Gain (Loss) on Investments
AEP Texas Central Transition Funding Co [Member]
AEP Texas Central Transition Funding Co [Member]
AEP Texas Central Transition Funding Company Variable Interest Entity Member
Paid-in Capital
Additional Paid in Capital
Protected Cell Of Energy Insurance Services, Inc. [Member]
Protected Cell Of Energy Insurance Services, Inc. [Member]
Protected Cell Of Energy Insurance Services, Inc. Variable Interest Entity Member
Mutual Funds Fixed Income [Member]
Mutual Funds Fixed Income [Member]
Mutual Funds Fixed Income
Average Interest Rate For Funds Loaned
Average Interest Rate For Funds Loaned
The average interest rate for funds loaned to a Money Pool during the period. The Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
Total Long-Term Debt Due Within One Year [Axis]
Total Long-Term Debt Due Within One Year [Axis]
Total Long-Term Debt Due Within One Year
Short-term Debt, Type [Axis]
Short-Term Debt, Type [Axis]
Warrants Held in Investee
Warrants Held in ChargePoint [Member]
Warrants Held in ChargePoint
Income Tax, Policy
Income Tax, Policy [Policy Text Block]
Prepayments and Other Current Assets
Prepaid Expense and Other Assets, Current
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation [Member]
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation [Member]
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation
Commitment from Bank Conduits to Finance Receivables Two
Commitment from Bank Conduits to Finance Receivables Two
Commitment from Bank Conduits to Finance Receivables Two
Asset Retirement Obligations (ARO)
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Requested Annual Base Rate Increase
Requested Annual Base Rate Increase
Requested Annual Base Rate Increase
Property, Plant and Equipment
Property, Plant and Equipment, Gross [Abstract]
Guarantee Obligations Current Carrying Value Other Liabilities Current
GuaranteeObligationsCurrentCarryingValueOtherLiabilitiesCurrent
The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees recorded under Other Current Liabilities.
Insider Trading Arrangements [Line Items]
Utility [Member]
Utility [Member]
Utility Company.
Remaining Recovery Period
Regulatory Asset, Amortization Period
Michigan Power Supply Cost Recovery Reconciliation
Michigan Power Supply Cost Recovery Reconciliation [Member]
Michigan Power Supply Cost Recovery Reconciliation
Impact of Cash Flow Hedges on the Condensed Balance Sheet
Impact of Cash Flow Hedges on Balance Sheet [Abstract]
Impact of Cash Flow Hedges on Balance Sheet.
Fees Paid to AEP Credit for Customer Accounts Receivable Sold
Fees Paid to AEP Credit for Customer Accounts Receivable Sold [Abstract]
Corporate unit ownership share of an equity unit
Corporate unit ownership share of an equity unit
A corporate unit's undivided beneficial ownership interest in an equity unit
Pirkey Generating Station (Unit No. 1)
Pirkey Generating Station (Unit No. 1) [Member]
Pirkey Generating Station (Unit No. 1) Member
Costs Below Authorized ROE Band in Base Rate Increase Request
Costs Below Authorized ROE Band in Base Rate Increase Request
Previously incurred costs included in recovery of below authorized ROE band in base rate increase.
Entity Registrant Name
Entity Registrant Name
Vegetation Management Program [Member]
Vegetation Management [Member]
Vegetation Management Member.
Material Terms of Trading Arrangement
Material Terms of Trading Arrangement [Text Block]
Award Timing Method
Award Timing Method [Text Block]
Non-Affiliate Interest
Non-Affiliate Interest
Non-affiliate member's interest in Desert Sky Wind Farm LLC and Trent Wind Farm LLC for repowering.
Trust Assets [Axis]
Trust Assets [Axis]
Trust Assets [Axis]
Adjustment to Compensation, Amount
Adjustment to Compensation Amount
Other Current Liabilities
Increase (Decrease) in Other Current Liabilities
Noncontrolling Interests
Equity, Attributable to Noncontrolling Interest
Base Rate [Domain]
Base Rate [Domain]
Base Rate Domain.
Santa Rita East [Member]
Santa Rita East [Member]
Santa Rita East
Compensation Actually Paid vs. Net Income
Compensation Actually Paid vs. Net Income [Text Block]
Peer Group Issuers, Footnote
Peer Group Issuers, Footnote [Text Block]
Requested Securitization Bonds Plant Recovery Retirement Costs
Requested Securitization Bonds Plant Recovery Retirement Costs
Requested Securitization Bonds Plant Recovery Retirement Costs
Accumulated Depreciation and Amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Other Long Term Debt Eight
Other Long Term Debt Eight [Member]
Other Long Term Debt Eight
Fair Value, Assets and Liabilities Measured on Recurring Basis
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Minimum Lease Payments, Sale Leaseback Transactions
Minimum Lease Payments, Sale Leaseback Transactions
Corporate and Other
Corporate and Other [Member]
Retirement of Long-term Debt
Repayments of Long-term Debt
Repayments of Long-Term Debt
Per Unit Conversion for Equity Units
Per Unit Conversion for Equity Units
The PAR value for each equity unit as issued
Asset Retirement Obligations (ARO) Liability for Nuclear Decommissioning of the Cook Plant
Decommissioning Liability, Noncurrent
Entity Central Index Key
Entity Central Index Key
Liabilities, Fair Value Disclosure
Liabilities, Fair Value Disclosure [Abstract]
Gain (Loss) on Fair Value Hedging Instruments
Derivative, Gain (Loss) on Derivative, Net
Amount of Gain (Loss) Recognized on Risk Management Contracts
Derivative Risk Management Contracts Gain Loss Recognized As Regulatory Asset Liability
Realized and unrealized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
February 2021 Severe Storm Fuel Costs
February 2021 Severe Storm Fuel Costs [Member]
February 2021 Severe Storm Fuel Costs
Non-Rule 10b5-1 Arrangement Terminated
Non-Rule 10b5-1 Arrangement Terminated [Flag]
AEP Share Price for Equity Unit Conversion
AEP Share Price for Equity Unit Conversion
AEP Share Price for Equity Unit Conversion
Requested Securitization Bonds Deferred Purchased Power Expenses
Requested Securitization Bonds Deferred Purchased Power Expenses
Requested Securitization Bonds Deferred Purchased Power Expenses
Impairment of Equity Method Investment
Equity Method Investment, Other than Temporary Impairment
Depreciation Expense
Depreciation Expense [Member]
Depreciation Expense
Non-Service Cost Components of Net Periodic Benefit Cost
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component
Kentucky Transmission Company
Kentucky Transmission Company [Member]
Kentucky Transmission Company
Reclassification Into Accumulated Other Comprehensive Income [Domain]
Reclassification Into Accumulated Other Comprehensive Income [Domain]
Reclassification Into Accumulated Other Comprehensive Income [Domain]
Customer Deposits
Customer Deposits, Current
Name
Trading Arrangement, Individual Name
Staff Recommended Adjustments to Companies Request
Staff Recommended Adjustments to Companies Request
The staff's recommended adjustments to the companies request.
Disaggregated Revenues from Contracts with Customers
Disaggregation of Revenue [Table Text Block]
Accretion Expense
Asset Retirement Obligation, Accretion Expense
Requested Rider to Recover October 2022 thru January 2024
Requested Rider to Recover October 2022 thru January 2024
Requested Rider to Recover period of October 2022 thru January 2024
Issuance of Common Stock, Value
Stock Issued During Period, Value, New Issues
Acquisition Of Nuclear Fuel Included In Current Liabilities
Acquisition of Nuclear Fuel Included in Current Liabilities as of March 31,
Acquisition Of Nuclear Fuel Included In Current Liabilities
Future cash outflow to pay for acquired nuclear fuel.
Ohio Valley Electric Corporation [Member]
Ohio Valley Electric Corporation [Member]
Ohio Valley Electric Corporation
Increase (Decrease) in Contract with Customer, Liability
Increase (Decrease) in Customer Deposits
Discrete Tax Adjustments
Effective Income Tax Rate Reconciliation Discrete Tax Adjustments Percentage
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations due to Discrete Tax Adjustments.
Plant Retirement Costs - Materials and Supplies [Member]
Materials and Supplies Related to Retired Plants [Member]
Materials and Supplies Related to Retired Plants [Member]
Interest Rate Foreign Currency Hedges
Interest Rate Foreign Currency Hedges [Member]
COVID-19 - Virginia
COVID-19 - Virginia [Member]
COVID-19 - Virginia
Regulatory Liability for Over-Recovered Fuel Costs
Regulatory Liability, Current
Amortization of Actuarial (Gains) Losses
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax
Entity [Domain]
Entity [Domain]
Maximum Potential Loss [Abstract]
Maximum Potential Loss [Abstract]
Maximum potential loss.
Long-term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Amendment Flag
Amendment Flag
Gain (Loss) on Hedging Instruments
Derivative, Gain (Loss) on Derivative, Net [Abstract]
Spent Nuclear Fuel Obligation
Spent Nuclear Fuel Obligation, Noncurrent
Legal Entity [Axis]
Legal Entity [Axis]
Fair Value Hedges [Member]
Fair Value Hedging [Member]
Enterprise Value
Enterprise Value
Enterprise Value
Asset Retirement Obligations
Asset Retirement Obligations, Noncurrent
Maximum Interest Rate for Funds Borrowed
Maximum Interest Rate for Funds Borrowed
The maximum weighted-average interest rate of funds outstanding at that time, calculated on a daily basis, borrowed during the period.
OtherLongTermDebtFour
OtherLongTermDebtFour [Member]
OtherLongTermDebtFour
Storm-Related Costs Recovery Request [Member]
Storm-Related Costs Recovery Request [Member]
Storm-Related Costs Recovery Request
Cash Paid for Interest, Net of Capitalized Amounts
Interest Paid, Excluding Capitalized Interest, Operating Activities
Domestic [Member]
Domestic [Member]
Domestic Member.
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure [Abstract]
Pollution Control Bond Two [Member]
Pollution Control Bond Two [Member]
Pollution Control Bond Two
Proceeds from Sale of Other Investments
Proceeds from Sale of Other Investments
Long-term Debt
Long-term Debt
Long-Term Debt, Excluding Current Maturities
Approved Carrying Charge
Approved Carrying Charge
Approved Carrying Charge on a Regulatory Asset
Related and Nonrelated Party Status [Domain]
Related and Nonrelated Party Status [Domain]
Weighted Average Number of Diluted AEP Common Shares Outstanding
Weighted Average Number of Shares Outstanding, Diluted
Amount of Gain (Loss) Recognized on Risk Management Contracts
Gain (Loss) on Derivative Instruments, Net, Pretax [Abstract]
Forgone Recovery, Explanation of Impracticability
Forgone Recovery, Explanation of Impracticability [Text Block]
Securities Activity Within the Decommissioning and SNF Trusts
Securities Activity Within Decommissioning and SNF Trusts [Text Block]
Securities Activity Within the decommissioning and SNF trusts.
Risk Management Assets
Derivative Asset [Abstract]
Wheeling Power Company
Wheeling Power Company [Member]
Wheeling Power Company
Texas
Texas [Member]
Texas Jurisdiction
Expenses
Operating Expenses [Abstract]
Acquisitions of Assets
Payments to Acquire Property, Plant, and Equipment
Payments to Acquire Property, Plant, and Equipment
Company Selected Measure Amount
Company Selected Measure Amount
Requested Annual Base Rate Increase Vegetation Management Portion
Requested Annual Base Rate Increase Vegetation Management Portion
Requested Annual Base Rate Increase Vegetation Management Portion
Employee Related Expense
Employee Related Expense [Member]
Employee Related Expense
TOTAL ASSETS
Total Assets
Total Assets
Assets
Name
Awards Close in Time to MNPI Disclosures, Individual Name
Requested Net Annual Increase
Requested Net Annual Increase
The amount requested for net annual increase.
Comparative Accounts Receivable Information
Proceeds from Sale and Collection of Other Receivables [Abstract]
2024 - 2026 [Member]
Maturity Period 2 [Member]
Property Tax
Property Tax [Member]
Property Tax
ARO Additional Liability Incurred [Member]
ARO Additional Liability Incurred [Member]
ARO Additional Liability Incurred
2019 Equity Units [Member]
2019 Equity Units [Member]
2019 Equity Units issued in March 2019
Other Long Term Debt Twelve
Other Long Term Debt Twelve [Member]
Other Long Term Debt Twelve
Non-NEOs
Non-NEOs [Member]
Indiana Michigan Power Co [Member]
Indiana Michigan Power Co [Member]
Indiana Michigan Power Company Member
ARO Type [Domain]
ARO Type [Domain]
ARO Type
Fair Value Held for Sale [Member]
Fair Value Held for Sale [Member]
Fair Value Held for Sale
2017-2019 Virginia Triennial Review [Member]
Virginia Legislation Affecting Biennial Reviews [Member]
Virginia Legislation Affecting Biennial Reviews [Member]
Equity Units [Member]
Equity units [Member]
Equity units issued by AEP in March 2019
Pension Plans [Member]
Pension Plan [Member]
Changes in the Fair Value of Net Trading Derivatives and other investments
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financing Activities
Net Cash Provided by (Used in) Financing Activities [Abstract]
INCOME BEFORE INCOME TAX EXPENSE AND EQUITY EARNINGS
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
2013 Reversal Of Previously Recorded Regulatory Disallowances
2013ReversalOfPreviouslyRecordedRegulatoryDisallowances
The 2013 reversal of previously recorded regulatory disallowances.
Kentucky Deferred Purchase Power Expenses [Member]
Kentucky Deferred Purchase Power Expenses [Member]
Kentucky Deferred Purchase Power Expenses [Member]
Non-PEO NEO
Non-PEO NEO [Member]
Ohio Transmission Company [Member]
Ohio Transmission Company [Member]
Ohio Transmission Company
Adjustment to Compensation:
Adjustment to Compensation [Axis]
Electric Generation, Transmission and Distribution Revenues [Member]
Electric Generation Transmission Distribution Revenues [Member]
Electric Generation, Transmission and Distribution Revenues.
Statutory Accounting Practices, Jurisdiction [Domain]
Statutory Accounting Practices, Jurisdiction [Domain]
Weighted Average Number of Basic AEP Common Shares Outstanding
Weighted Average Number of Shares Outstanding, Basic
Deferred Property Taxes
Deferred Tax Assets, Property, Plant and Equipment
Nuclear Trust Fund Investments
Nuclear Trust Fund Investments [Abstract]
Nuclear trust fund investments.
Maximum Loans to Money Pool
Maximum Loans to Money Pool
Maximum Loans to a Money Pool at anytime during the period. The Money Pool represents centralized funding mechanism AEP uses to meet the short-term cash requirements of certain subsidiaries.
Other Temporary Investments
Other Temporary Investments [Text Block]
Other Temporary Investments
Recognition Period [Axis]
Recognition Period [Axis]
Recognition Period [Axis]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Axis]
Senior Unsecured Notes Five
Senior Unsecured Notes Five [Member]
Senior Unsecured Notes Five
Change in Advances to Affiliates, Net
Increase (Decrease) in Notes Receivable, Related Parties
Revenues
Revenues [Abstract]
Return of Capital to Parent Equity Statement
Return of Capital to Parent Equity Statement
Return of Capital to Parent Equity Statement
Payment Timing [Domain]
Payment Timing [Domain]
Payment Timing [Domain]
OTHER COMPREHENSIVE INCOME
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Fair Value Measurements (Textuals)
Fair Value Measurements (Textuals) [Abstract]
Fair Value Measurements Textuals Abstract
Impairment Charge Disallowed Plant Investments
Impairment Charge Disallowed Plant Investments
Impairment Charge recorded to recognize disallowed plant investments.
Dolet Hills Power Station [Member]
Dolet Hills Generating Station (Unit No. 1) [Member]
Dolet Hills Generating Station (Unit No. 1) Member
Regulatory Assets
Regulatory Assets, Noncurrent
Regulatory Asset, Noncurrent
Related Party Transaction [Axis]
Related Party Transaction [Axis]
Pay vs Performance Disclosure
Pay vs Performance Disclosure [Table]
Statement [Line Items]
Statement [Line Items]
Customer Accounts Receivable Managed Portfolio
Customer Accounts Receivable Managed Portfolio [Text Block]
Customer accounts receivable managed portfolio.
Variable Interest Entities [Member]
Variable Interest Entities [Member]
Variable Interest Entities
Gross Amounts Offset in the Statement of Financial Position [Member]
Gross Amounts Offset in Statement of Financial Position [Member]
Gross Amounts Offset in the Statement of Financial Position.
Reportable Segment Information
Segment Reporting Information, Profit (Loss) [Abstract]
Type of Expense [Domain]
Interim Period, Costs Not Allocable [Domain]
Long-term Debt
Schedule of Debt [Table Text Block]
Kentucky Power Company and Kentucky Transmission Company
Kentucky Power Company and Kentucky Transmission Company [Member]
Kentucky Power Company and Kentucky Transmission Company
Reclamation Cost Revision [Member]
Reclamation Cost Revision [Member]
Reclamation Cost Revision
Vertically Integrated Utilities Revenues [Member]
Vertically Integrated Utilities Revenues [Member]
Vertically Integrated Utilities Revenues.
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Maximum Percentage of Consolidated Tangible Net Assets
Maximum Percentage of Consolidated Tangible Net Assets
Maximum percentage of consolidated tangible net assets limit for debt as stated in the covenants in AEPTCO's note purchase agreements and indenture.
Noncontrolling Interests [Member]
Noncontrolling Interest [Member]
Noncontrolling Interest [Member]
Corporate Alternative Minimum Tax [Axis]
Corporate Alternative Minimum Tax [Axis]
Corporate Alternative Minimum Tax