Affiliated Companies
Accounts and Other Receivables, Net, Current
Capital Contribution from Member
Proceeds From Contributions From Members
Proceeds From Contributions From Members
Dividends Paid to Member
Payments of Distributions to Affiliates
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Sale of stock, consideration to be received on transaction
Sale Of Stock, Consideration To Be Received On Transaction
Sale Of Stock, Consideration To Be Received On Transaction
Retirement of Long-term Debt
Principal Amount Paid
Repayments of Long-Term Debt
Cover [Abstract]
Cover [Abstract]
Impact of Fair Value Hedges on Balance Sheet
Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table 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
AEPTHCo
AEP Transmission Holdco [Member]
AEP Transmission Holdco.
Alternative and Other
Alternative and Other [Member]
Alternative and Other [Member]
Trading Symbol
Trading Symbol
Fair Value Hedges
Fair Value Hedging [Member]
Earning test, over-earning credit to customers, approved
Public Utilities, Earning Test, Over-Earning Credit To Customers, Approved
Public Utilities, Earning Test, Over-Earning Credit To Customers, Approved
TOTAL COMPREHENSIVE INCOME
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Total Assets
Gross Amounts Recognized
Derivative Asset, Subject to Master Netting Arrangement, before Offset
Non-NEOs
Non-NEOs [Member]
Cash dividends declared (in dollars per share)
Common Stock, Dividends, Per Share, Declared
Reduction in revenue requirement for recovery of actual test year pjm transmission costs
Reduction In Revenue Requirement For Recovery of Actual Test Year PJM Transmission Costs
Reduction In Revenue Requirement For Recovery of Actual Test Year PJM Transmission Costs
Allowance for Credit Losses
Accounts Receivable, Allowance for Credit Loss, Current
Common Stock Dividends – Nonaffiliated
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
Disposal Group Name [Domain]
Disposal Group Name [Domain]
Midwest Transmission Holdings
Midwest Transmission Holdings [Member]
Midwest Transmission Holdings
Maximum Future Payments for Letters of Credit Issued Under the 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
Cash Flow Hedges, Tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax
Accounts Receivable, Net
Increase (Decrease) in Accounts Receivable
Flow-Through of CAMT
Effective Income Tax Rate Reconciliation, Flow-Through Of CAMT, Percentage
Effective Income Tax Rate Reconciliation, Flow-Through Of CAMT, Percentage
Earnings Per Share (EPS)
Earnings Per Share, Policy [Policy Text Block]
Non-Rule 10b5-1 Arrangement Adopted
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Hedging Relationship [Domain]
Hedging Relationship [Domain]
FAIR VALUE MEASUREMENTS
Fair Value Disclosures [Text Block]
Maintenance
Utilities Operating Expense, Maintenance [Member]
Utilities Operating Expense, Maintenance
Award Timing Disclosures [Line Items]
ENEC Filing
ENEC Filing [Member]
ENEC Filing
Fair Value Hedging Instruments
Derivative, Gain (Loss) on Derivative, Net
Portion at Fair Value Measurement
Portion at Fair Value Measurement [Member]
Intercompany item eliminated in consolidation
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.
Accrued Interest
Increase (Decrease) in Interest Payable, Net
Aep share of independence energy connection capital costs
Parent Share of Independence Energy Connection Capital Costs
Parent Share of Independence Energy Connection Capital Costs
Approved annual base rate increase
Public Utilities, Approved Rate Increase (Decrease), Amount
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Abstract]
Wholesale and Competitive Retail Revenues:
Wholesale and Competitive [Member]
Revenues related to wholesale and competitive sales.
West Virginia Modified Rate Base Cost
West Virginia Modified Rate Base Cost [Member]
West Virginia Modified Rate Base Cost
TOTAL OTHER NONCURRENT ASSETS
Other Noncurrent Assets
Other Assets, Noncurrent
Regulatory asset
Regulatory Asset
VARIABLE INTEREST ENTITIES
Variable Interest Entity Disclosure [Text Block]
Alternative Revenue Programs
Alternative [Member]
Alternative [Member]
Operating Segments
Operating Segments [Member]
Net Cash Flows from Operating Activities
Net Cash Provided by (Used in) Operating Activities
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities [Abstract]
Deferred Pension and OPEB Costs
Pension and Other Postretirement Plans Costs [Member]
Changes in Accumulated Other Comprehensive Income (Loss) by Component
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Other Changes in Equity
Stockholders' Equity, Other
Approved annual revenue increase
Approved Annual Revenue Increase
Amount of approved annual revenue increase.
Award Timing Method
Award Timing Method [Text Block]
Net Periodic Benefit Cost (Credit)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Trading Arrangements, by Individual
Trading Arrangements, by Individual [Table]
Provision for Refund
Provisions For Rate Refunds, Current
Refunds for costs collected in formula rates.
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Insider Trading Policies and Procedures [Line Items]
Direct Borrowing
Direct Borrowing [Member]
Direct Borrowing and Loans from and to Parent
Proceeds from divestiture of businesses
Proceeds from Divestiture of Businesses
TOTAL MEZZANINE EQUITY
Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests
Number of uncommitted facilities
Debt Instrument, Number Of Uncommitted Facilities
Debt Instrument, Number Of Uncommitted Facilities
Adjustment to Compensation, Amount
Adjustment to Compensation Amount
2023 Kentucky Base Rate and Securitization Case
2023 Kentucky Base Rate and Securitization Case [Member]
2023 Kentucky Base Rate and Securitization Case
Compensation Amount
Outstanding Recovery Compensation Amount
Residential Revenues
Residential [Member]
Retail revenues from the residential class.
Requested debt capital structure
Public Utilities, Requested Debt Capital Structure, Percentage
Total Assets
Assets Including Netting, Fair Value Disclosure
Assets Including Netting, Fair Value Disclosure
Disposal Group Classification [Axis]
Disposal Group Classification [Axis]
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]
Entity Small Business
Entity Small Business
Company Selected Measure Amount
Company Selected Measure Amount
Tabular List, Table
Tabular List [Table Text Block]
Level 3
Fair Value, Inputs, Level 3 [Member]
Mark-to-Market of Risk Management Contracts
Unrealized Gain (Loss) on Derivatives
Antidilutive shares outstanding (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Fixed Performance Obligations
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]
CCR Rule Revision
CCR Rule Revision [Member]
CCR Rule Revision
Credit Facility [Domain]
Credit Facility [Domain]
Accounts and Financing Receivables [Table]
Accounts and Financing Receivables [Table]
Regulatory Asset, Proposed Securitization Items
Regulatory Asset, Proposed Securitization Items [Table Text Block]
Regulatory Asset, Proposed Securitization Items
Significant Accounting Matters [Table]
Significant Accounting Matters [Table]
Significant Accounting Matters [Table]
FTRs
Financial Trasnsmission Rights [Member]
Risk management commodity contracts whose primary underlying risk is tied financial transmission rights.
Goodwill
Goodwill
Proceeds from Investment Sales
Proceeds from Sale of Other Investments
Construction Expenditures
Payments for Construction in Process
Effective Income Tax Rate Reconciliation [Table]
Effective Income Tax Rate Reconciliation [Table]
Natural Gas Expenses and Purchases of Electricity to be Recovered from Customers
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
Subtotal Fixed Income Securities
Fixed Income Funds [Member]
Entity Information [Line Items]
Entity Information [Line Items]
Employee Stock Option
Share-Based Payment Arrangement, Option [Member]
Depreciation
Depreciation
Other Financing Activities
Proceeds from (Payments for) Other Financing Activities
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Pension Plans
Pension Plan [Member]
Number of states that filed a motion to intervene
Number Of States That Filed A Motion To Intervene
Number Of States That Filed A Motion To Intervene
Assets:
Offsetting Derivative Assets [Abstract]
Other
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Schedule of Contractual Maturities, Fair Value of Debt Securities
Investments Classified by Contractual Maturity Date [Table Text Block]
Award Type
Award Type [Axis]
Corporate Debt
Corporate Debt Securities [Member]
Sale of stock, authorized amount
Sale Of Stock, Authorized Amount
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.
Generation & Marketing Segment
Generation & Marketing Segment [Member]
Generation & Marketing Segment
Provision for Refund
Provisions For Rate Refunds, Noncurrent
Provisions For Rate Refunds, Noncurrent
Order entered in mandated period
Public Utilities, Order Entered In Mandated Period
Public Utilities, Order Entered In Mandated Period
Net book value
Property, Plant and Equipment, Net
Debt retired
Repayments of Debt
TOTAL LIABILITIES
Liabilities
Regulatory asset, refund to customer period
Regulatory Asset, Refund To Customer Period
Regulatory Asset, Refund To Customer Period
Noncontrolling Interests
Equity, Attributable to Noncontrolling Interest
Schedule of Cash and Cash Equivalents
Schedule of Cash and Cash Equivalents [Table Text Block]
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAXES
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Common Stock – Par Value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Revolving Credit Facility
Revolving Credit Facility [Member]
Expiration Date
Trading Arrangement Expiration Date
Spent Nuclear Fuel and Decommissioning Trusts
Spent Nuclear Fuel and Decommissioning Trusts [Member]
Spent Nuclear Fuel and Decommissioning Trusts.
Loans
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.
INVESTING ACTIVITIES
Net Cash Provided by (Used in) Investing Activities [Abstract]
PSO
PSO
Public Service Company Of Oklahoma [Member]
Public Service Company Of Oklahoma Member
Capital Contribution from Member
Capital Contribution from Parent
Adjustments to Additional Paid in Capital, Capital Contribution
Adjustments to Additional Paid in Capital, Capital Contribution
Total Other Revenues
Revenue Not from Contract with Customer
Obligations Under Operating Leases
Operating Lease, Liability, Current
Total Shareholder Return Amount
Total Shareholder Return Amount
Total Other Temporary Investments and Restricted Cash
Other Short-Term Investments
Settlement agreement equity capital structure
Settlement Agreement Equity Capital Structure
Settlement Agreement Equity Capital Structure
Equity Awards Adjustments, Footnote
Equity Awards Adjustments, Footnote [Text Block]
Asset retirement obligation, liabilities incurred
Asset Retirement Obligation, Liabilities Incurred
Regulatory asset, recovery of fuel costs, deferred
Regulatory Asset, Recovery Of Fuel Costs, Deferred
Approved Deferral of Dolet Hills Fuel Costs in 2021
Request to defer transmission costs, amount denied
Request To Defer Transmission Costs, Amount Denied
Request To Defer Transmission Costs, Amount Denied
Proceeds from sale of receivables to AEP Credit
Proceeds from Sale of Finance Receivables
TOTAL PROPERTY, PLANT AND EQUIPMENT – NET
Net Property, Plant and Equipment
Regulated And Nonregulated Property, Plant, And Equipment, Net
Regulated And Nonregulated Property, Plant, And Equipment
Paid-in Capital
Members' Capital
Total Property, Plant and Equipment
Property, Plant and Equipment, Gross
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Named Executive Officers, Footnote
Named Executive Officers, Footnote [Text Block]
Restricted Cash
Cash [Member]
General
Basis of Accounting, Policy [Policy Text Block]
WEIGHTED AVERAGE NUMBER OF DILUTED AEP COMMON SHARES OUTSTANDING (in shares)
Weighted-Average Number of Diluted AEP Common Shares Outstanding (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Statutory Accounting Practice, Jurisdiction [Axis]
Statutory Accounting Practice, Jurisdiction [Axis]
AEP Texas Restoration Funding
Restoration Funding [Member]
Texas Restoration Funding for Hurricane Harvey
MNPI Disclosure Timed for Compensation Value
MNPI Disclosure Timed for Compensation Value [Flag]
TOTAL AEP COMMON SHAREHOLDERS’ EQUITY
Beginning balance
Ending balance
Equity, Attributable to Parent
Restricted Cash
Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block]
Total Issuances
Proceeds from Issuance of Debt
Input/Range, liability
Derivative Liability, Measurement Input
Construction Work in Progress
Construction in Progress, Gross
Risk Management Assets
Derivative Asset, Current
Derivative Asset, Current
Utility Plant [Domain]
Utility Plant [Domain]
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation
Cost of Sales [Member]
Sale of Stock [Domain]
Sale of Stock [Domain]
Cook plant
Cook Plant [Member]
Cook Plant
Document Fiscal Period Focus
Document Fiscal Period Focus
All Executive Categories
All Executive Categories [Member]
Weighted-Average Dilutive Effect of Stock-Based Awards (in shares)
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements
Statement of Financial Position Location, Balance [Domain]
Statement of Financial Position Location, Balance [Domain]
Pension Settlement
Pension Costs [Member]
Capital shares reserved for future issuance, value
Common Stock, Capital Shares Reserved For Future Issuance, Value
Common Stock, Capital Shares Reserved For Future Issuance, Value
Changed Peer Group, Footnote
Changed Peer Group, Footnote [Text Block]
ASSETS
Assets [Abstract]
Retirement Plan Type [Domain]
Retirement Plan Type [Domain]
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)
Other Comprehensive Income (Loss)
Other Comprehensive Income (Loss), Net of Tax
Document Type
Document Type
Derivative Contract [Domain]
Derivative Contract [Domain]
Reportable Segment Information
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Junior Subordinated Notes
Junior Subordinated Notes
Requested net increase in oklahoma annual revenues
Requested Net Increase in Oklahoma Annual Revenues
Requested Net Increase in Oklahoma Annual Revenues
Nonrelated Party
Nonrelated Party [Member]
Defined Benefit Plan [Table]
Defined Benefit Plan [Table]
Revenues
Sales [Member]
Regulatory Asset [Line Items]
Regulatory Asset [Line Items]
Maximum
High
Maximum [Member]
Equity Valuation Assumption Difference, Footnote
Equity Valuation Assumption Difference, Footnote [Text Block]
Accounts Payable
Accounts Payable, Current
Other Temporary Investments and Restricted Cash
Restricted Cash and Investments [Abstract]
OTHER NONCURRENT ASSETS
Assets, Noncurrent [Abstract]
Dolet Hills Power Station Accelerated Depreciation
Dolet Hills Power Station Accelerated Depreciation [Member]
Dolet Hills Power Station Accelerated Depreciation [Member]
Statistical Measurement [Axis]
Statistical Measurement [Axis]
Non-Rule 10b5-1 Arrangement Terminated
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Non-PEO NEO Average Total Compensation Amount
Non-PEO NEO Average Total Compensation Amount
Public utilities, recommended disallowance purchased power
Public Utilities, Recommended Disallowance Purchased Power
Public Utilities, Recommended Disallowance Purchased Power
Employee Benefits and Pension Obligations
Employee Benefits and Pension Obligations, Noncurrent
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.
Name
Outstanding Recovery, Individual Name
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
AEPTCo
AEP Transmission Company, LLC [Member]
AEP Transmission Company, LLC
Requested securitization bonds regulatory assets recovery
Requested Securitization Bonds Regulatory Assets Recovery
Requested Securitization Bonds Regulatory Assets Recovery
Requested rate increase related to ROE and capital structure
Public Utilities, Requested Rate Increase (Decrease), Amount Related To Proposed ROE And Capital Structure
Public Utilities, Requested Rate Increase (Decrease), Amount Related To Proposed ROE And Capital Structure
Long-term Risk Management Liabilities, Net
Derivative Liability, Noncurrent, Net
Derivative Liability, Noncurrent, Net
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect
Q. Shane Lies, Trading Arrangement between May 19th, 2025 & December 31, 2025 [Member]
Q. Shane Lies, Trading Arrangement between May 19th, 2025 & December 31, 2025
Award Timing Predetermined
Award Timing Predetermined [Flag]
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.
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Capital Contribution from Parent
Proceeds from Contributions from Parent
Dividends Paid on Common Stock
Dividends Paid on Common Stock
Payments of Ordinary Dividends, Common Stock
Amortization of Prior Service Credit
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
TOTAL DILUTED EARNINGS PER SHARE ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS (in dollars per share)
Weighted-Average Number of Diluted AEP Common Shares Outstanding (in dollars per share)
Earnings Per Share, Diluted
Earning test, over-earning credit to customers, proposed
Public Utilities, Earning Test, Over-Earning Credit To Customers, Proposed
Public Utilities, Earning Test, Over-Earning Credit To Customers, Proposed
Regulatory asset, refund to customer, proposed amount
Regulatory Asset, Refund To Customer, Proposed Amount
Regulatory Asset, Refund To Customer, Proposed Amount
Counterparty Name [Domain]
Counterparty Name [Domain]
Adjusted cost of equity securities
Adjusted Cost Of Equity Securities
Adjusted cost of equity securities within the nuclear trusts
Virginia Fuel Adjustment Clause
Virginia Fuel Adjustment Clause [Member]
Virginia Fuel Adjustment Clause
State and Local Government
State and Local Jurisdiction [Member]
David M. Feinberg Trading Arrangement on June 10, 2025 [Member]
David M. Feinberg Trading Arrangement on June 10, 2025
Restatement does not require Recovery
Restatement Does Not Require Recovery [Text Block]
Ownership [Axis]
Ownership [Axis]
AEP Texas
AEP Texas
AEP Texas Inc. [Member]
AEP Texas Inc.
Impairment charge total
Impairment Charge Total
Total impairment charge recorded as part of agreement.
Retirement Benefits [Abstract]
Retirement Benefits [Abstract]
Q. Shane Lies [Member]
Q. Shane Lies
Transmission Revenues
Electric Transmission [Member]
Statement of Financial Position [Abstract]
Statement of Financial Position [Abstract]
NET INCOME
Net Income
Net Income (Loss)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Income Tax Expense (Benefit)
Income Tax Expense (Benefit)
Interest Cost
Defined Benefit Plan, Interest Cost
Cash collateral paid
Cash Collateral Paid
Cash Collateral Paid
After 10 years
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value
Derivative, notional amount
Derivative, Notional Amount
Requested annual increase without securitization
Requested Annual Increase Without Securitization
Requested annual increase if securitization is authorized.
Total Assets
Risk Management Assets
Fair value, assets
Derivative Asset
Power (MWhs)
Power Contract Member [Member]
Nominal energy measure used to calculate payments on a derivative instrument.
Deferral of Incremental Nuclear Refueling Outage Expenses, Net
Amortization (Deferral) of Incremental Nuclear Refueling Outage Expenses, Net
The net cash inflow or outflow due to Cook Unit 1 & 2 refueling outage levelization.
Total Revenues from Contracts with Customers
Revenue from Contract with Customer, Excluding Assessed Tax
Change in Other Noncurrent Liabilities
Increase (Decrease) in Other Noncurrent Liabilities
Other Property, Plant and Equipment (Including Coal Mining and Nuclear Fuel)
Other Property, Plant and Equipment
Property, Plant and Equipment, Other, Gross
Statement of Comprehensive Income [Abstract]
Statement of Comprehensive Income [Abstract]
2024 Oklahoma Base Rate Case
2024 Oklahoma Base Rate Case [Member]
2024 Oklahoma Base Rate Case
Estimated reduction related to deferred costs no longer recoverable
Regulatory Asset, Estimated Reduction Related To Deferred Costs No Longer Recoverable
Regulatory Asset, Estimated Reduction Related To Deferred Costs No Longer Recoverable
Net Cash Flows Used for Investing Activities
Net Cash Provided by (Used in) Investing Activities
Approved carrying charges
Approved Carrying Charges
Approved Carrying Charges
Mitchell Base Rate Surcharge
Mitchell Base Rate Surcharge [Member]
Mitchell Base Rate Surcharge
All Adjustments to Compensation
All Adjustments to Compensation [Member]
G&M
Generation And Marketing [Member]
Generation And Marketing [Member]
2025 ETT Base Rate Case
2025 ETT Base Rate Case [Member]
2025 ETT Base Rate Case
Paid-in Capital
Additional Paid in Capital
Short-term Debt, Type [Domain]
Short-Term Debt, Type [Domain]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Commitments and Contingencies Disclosure [Abstract]
Maturities of net fair value of risk management contracts
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.
Carrying Amount of the Hedged Liabilities
Hedged Liability, Fair Value Hedge
Amount of Gain (Loss) Recognized on Risk Management Contracts
Schedule of Derivative Instruments Included in Trading Activities [Table Text Block]
Legal Entity [Axis]
Legal Entity [Axis]
Period ending February 29, 2024
Base Rate Increase, Period One [Member]
Base Rate Increase, Period One
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
ATM Offering Program
ATM Offering Program [Member]
ATM Offering Program
Maximum Borrowings
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.
Regulatory Asset [Axis]
Regulatory Asset [Axis]
SWEPCo Storm Recovery Funding
Recovery Funding [Member]
Recovery Funding
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.
Related Party Transaction [Axis]
Related Party Transaction [Axis]
Commodity
Commodity Contract [Member]
6.01% Note Payable
6.01% Note Payable [Member]
6.01% Note Payable
Regulatory asset, net under-recovered fuel costs
Regulatory Asset, Net Under-Recovered Fuel Costs
Regulatory Asset, Net Under-Recovered Fuel Costs
Fixed performance obligations, period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Cash Flow Hedges
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
United States Government
US Government Agencies Debt Securities [Member]
Long-term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Entity Address, State or Province
Entity Address, State or Province
Non-Service Cost Components of Net Periodic Benefit Cost
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Accounts Receivable:
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Erroneous Compensation Analysis
Erroneous Compensation Analysis [Text Block]
Total commitment from bank conduits to finance receivables
Total Commitment From Bank Conduits To Finance Receivables
Total commitment from bank conduits to finance receivables.
Other
Portion at Other than Fair Value Measurement [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Financial Instruments [Domain]
Financial Instruments [Domain]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts, Notes, Loans and Financing Receivable [Line Items]
LIABILITIES AND EQUITY
Liabilities and Equity [Abstract]
Welsh Plant, Units 1 and 3
Welsh Plant Unit 1 and 3 [Member]
Welsh Plant Unit 1 and 3 [Member]
Components of Net Periodic Benefit Cost
Schedule of Net Benefit Costs [Table Text Block]
Restatement Determination Date
Restatement Determination Date
Pay vs Performance Disclosure
Pay vs Performance Disclosure [Table]
Interest Rate (USD)
Interest Rate Contract [Member]
Pollution Control Bond
Pollution Control Bond [Member]
Pollution Control Bond [Member]
Schedule of Average Interest Rates for Funds Borrowed from and Loaned to Utility Money Pool
Schedule Of Average Interest Rates For Funds Borrowed From And Loaned To Utility Money Pool [Table 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.
Operating Lease Assets
Operating Lease, Right-of-Use Asset
Erroneously Awarded Compensation Recovery
Erroneously Awarded Compensation Recovery [Table]
Money Pool Participant by Company Type [Domain]
Money Pool Participant by Company Type [Domain]
Money Pool Participant by Company Type [Domain]
Short-term Debt, Type [Axis]
Short-Term Debt, Type [Axis]
Number of FERC-regulated transmission-only electric utilities
Number Of FERC-Regulated Transmission-Only Electric Utilities
Number Of FERC-Regulated Transmission-Only Electric Utilities
Independence Energy Connection Project
Independence Energy Connection Project [Member]
Independence Energy Connection Project
Amortization of Prior Service Cost (Credit)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
Other Regulatory Assets Pending Final Regulatory Approval
Other Regulatory Assets (Liabilities) [Member]
Subsequent Event
Subsequent Event [Member]
Restricted Cash
Restricted Cash for Securitized Funding
Restricted Cash and Cash Equivalents, Current
Gross Realized Losses on Investment Sales
Gain (Loss) on Investments
OPCo
OPCo
Ohio Power Company [Member]
Ohio Power Company Member
Peer Group Issuers, Footnote
Peer Group Issuers, Footnote [Text Block]
Natural Gas (MMBtus)
Natural Gas Contract [Member]
Nominal energy measure used to calculate payments on a derivative instrument.
Segments [Domain]
Segments [Domain]
Reportable Segment Information
Segment Reporting Information, Profit (Loss) [Abstract]
Securitized deferred storm costs
Securitized Deferred Storm Costs
Securitized Deferred Storm Costs
PEO
PEO [Member]
Name
Trading Arrangement, Individual Name
SWTCo
AEP Southwestern Transmission Co [Member]
AEP Southwestern Transmission Co
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
Arkansas
ARKANSAS
Cost of Removal Regulatory Liability
Cost of Removal Regulatory Liability
The regulatory liability recorded for cost of removal.
Property, Plant and Equipment, Type [Axis]
Long-Lived Tangible Asset [Axis]
Disposal Group Name [Axis]
Disposal Group Name [Axis]
Equity Earnings of Unconsolidated Subsidiaries
Income (Loss) from Equity Method Investments
Commitments, Guarantees and Contingencies
Commitments Contingencies and Guarantees [Text Block]
INCOME BEFORE INCOME TAX EXPENSE (BENEFIT) AND EQUITY EARNINGS
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Commercial Revenues
Commercial [Member]
Retail revenues from the commercial class.
Awards Close in Time to MNPI Disclosures, Table
Awards Close in Time to MNPI Disclosures [Table 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.
Other Income (Expense):
Other Nonoperating Income (Expense) [Abstract]
Regulatory asset, recovery of fuel costs, period
Regulatory Asset, Recovery Of Fuel Costs, Period
Regulatory Asset, Recovery Of Fuel Costs, Period
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member]
Restricted Cash
Cash and Cash Equivalents, Fair Value Disclosure
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
Aggregate Erroneous Compensation Amount
Aggregate Erroneous Compensation Amount
Revised requested annual increase
Revised Requested Annual Increase
Revised Requested Annual Increase
Local Phone Number
Local Phone Number
Current Risk Management Assets
Prepaid Expenses and Other Current Assets [Member]
Gain (Loss) on Hedging Instruments
Derivative, Gain (Loss) on Derivative, Net [Abstract]
Aggregate Erroneous Compensation Not Yet Determined
Aggregate Erroneous Compensation Not Yet Determined [Text Block]
Fuel supply provided, percentage
Fuel Supply Provided, Percentage
Fuel Supply Provided, Percentage
Changes in Certain Components of Working Capital:
Increase (Decrease) in Operating Capital [Abstract]
NONCURRENT LIABILITIES
Liabilities, Noncurrent [Abstract]
PEO Total Compensation Amount
PEO Total Compensation Amount
Requested return on equity
Public Utilities, Requested Return on Equity, Percentage
Schedule of Fees Paid to AEP Credit for Customer Accounts Receivable Sold
Schedule Of Fees Paid To AEP Credit For Customer Accounts Receivable Sold [Table Text Block]
Fees paid to AEP Credit for customer accounts receivable sold.
Total Liabilities
Gross Amounts Recognized
Derivative Liability, Subject to Master Netting Arrangement, before Offset
Fair Value
Fair Value
Debt Securities, Available-for-Sale, Excluding Accrued Interest
Property, Plant and Equipment, Type [Domain]
Long-Lived Tangible Asset [Domain]
VIU
Vertically Integrated Utilities Segment [Member]
Vertically Integrated Utilities [Member]
Statement of Income Location, Balance [Axis]
Statement of Income Location, Balance [Axis]
Accrued Interest
Accrued Interest
Interest Payable, Current
Debt Disclosure [Abstract]
Debt Disclosure [Abstract]
Common Stock
Common Stock [Member]
Forgone Recovery due to Expense of Enforcement, Amount
Forgone Recovery due to Expense of Enforcement, Amount
Amount of approved increase related to vegetation management
Amount of Approved Increase Related to Vegetation Management
Amount of Approved Increase Related to Vegetation Management
Total Risk Management Liabilities
Derivative Liability Including Netting
Derivative Liability Including Netting
Line of Credit
Line of Credit [Member]
Significant Accounting Matters [Line Items]
Significant Accounting Matters [Line Items]
Significant Accounting Matters [Line Items]
Beginning balance
Ending balance
TOTAL MEMBER’S EQUITY
Members' Equity
Segment Reporting [Abstract]
Segment Reporting [Abstract]
Entity Central Index Key
Entity Central Index Key
Other Segment Items
Segment Reporting, Other Segment Item, Amount
Equity Method Investments and Joint Ventures [Abstract]
Transmission and Distribution Utilities
Transmission and Distribution Utilities Revenues [Member]
Transmission and Distribution Revenues.
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations and Disposal Groups [Abstract]
Non-PEO NEO Average Compensation Actually Paid Amount
Non-PEO NEO Average Compensation Actually Paid Amount
Other Revenues
Other Affiliated and Nonaffiliated [Member]
Other Affiliated and Nonaffiliated
Regulated Generating Units to be Retired
Regulated Generating Units to be Retired [Table Text Block]
Regulated Generating Units to be Retired.
Award Timing, How MNPI Considered
Award Timing, How MNPI Considered [Text Block]
Financial Instrument [Axis]
Financial Instrument [Axis]
BUSINESS SEGMENTS
Segment Reporting Disclosure [Text Block]
Long-term Debt Due Within One Year
Long-term Debt Due Within One Year
Long-Term Debt, Current Maturities
Amortization of Actuarial (Gains) Losses
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
Trust Assets [Domain]
Trust Assets [Domain]
[Domain] for Trust Assets [Axis]
Sales to AEP Affiliates
Sales To Affiliates [Member]
Sales To Affiliates
Measurement Basis [Axis]
Measurement Basis [Axis]
Aep share of ett cumulative revenues subject to review
AEP Share Of Cumulative Revenues Subject To Review
AEP's share of ETT's cumulative revenues, subject to review, based upon interim rate increases.
Title
Trading Arrangement, Individual Title
Wind generation MW
Wind Generation MWs
Wind Generation (MWs)
Schedule of Securities Activity
Securities Activity Within Decommissioning and SNF Trusts [Table Text Block]
Securities Activity Within the decommissioning and SNF trusts.
2024 West Virginia Base Rate Case
2024 West Virginia Base Rate Case [Member]
2024 West Virginia Base Rate Case
Consolidated Entities [Axis]
Consolidated Entities [Axis]
Amortization of Pension and OPEB Deferred Costs, Tax
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax
Total Comprehensive Income Attributable To Noncontrolling Interests
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Variable Interest Entities
Consolidation, Variable Interest Entity, Policy [Policy Text Block]
City Area Code
City Area Code
CURRENT LIABILITIES
Liabilities, Current [Abstract]
Settlement agreement debt capital structure
Settlement Agreement Debt Capital Structure
Settlement Agreement Debt Capital Structure
Change in Short-term Debt with Original Maturities less than 90 Days, Net
Change in Short-term Debt – Nonaffiliated
Proceeds from (Repayments of) Short-Term Debt, Maturing in Three Months or Less
Regulatory Assets Currently Not Earning a Return
Regulatory Assets Currently Not Earning Return [Member]
Regulatory Assets Currently Not Earning a Return
Disposal Group Classification [Domain]
Disposal Group Classification [Domain]
Insider Trading Policies and Procedures Not Adopted
Insider Trading Policies and Procedures Not Adopted [Text Block]
Purchases of Investments
Payments to Acquire Short-Term Investments
Stockholders' Equity Note [Abstract]
Upfront Financing Costs
Upfront Financing Costs [Member]
Upfront Financing Costs
Nonutility
Nonutility [Member]
Nonutility Company.
Accrued Taxes, Net
Increase (Decrease) in Accrued Taxes Payable
Dividends Payable [Table]
Dividends Payable [Table]
Input/Range, asset
Derivative Asset, Measurement Input
Long-term Debt
Long-term Debt
Long-Term Debt, Excluding Current Maturities
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Securitized deferred issuance related expenses
Securitized Deferred Issuance Related Expenses
Securitized Deferred Issuance Related Expenses
Schedule of Sensitivity of Fair Value Measurements
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Supplementary Cash Flow Information
Supplementary Cash Flow Information [Table Text Block]
Supplementary Cash Flow Information
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
APCo
APCo
Appalachian Power Company [Member]
Appalachian Power Company Member
Retained Earnings
Retained Earnings (Accumulated Deficit)
Change in Regulatory Assets
Increase (Decrease) in Regulatory Assets
The increase (decrease) during the reporting period in regulatory assets.
Portion Expected to be Reclassed to Net Income During the Next Twelve Months
Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months
Risk Management Commodity Contracts
Risk Management Commodity Contracts [Member]
Risk Management Contracts Member.
Plant Retirement Costs – Asset Retirement Obligation Costs
Asset Retirement Obligation Costs [Member]
Fuel, Materials and Supplies
Materials and Supplies
Increase (Decrease) in Inventories
Pirkey 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
Schedule of Long-term Debt
Schedule of Debt [Table Text Block]
Louisiana
LOUISIANA
Aggregate Available
Trading Arrangement, Securities Aggregate Available Amount
Schedule of Short-term Debt
Schedule of Short-Term Debt [Table Text Block]
Equity Awards Adjustments
Equity Awards Adjustments [Member]
Underlying Securities
Award Underlying Securities Amount
Regulatory Asset for Under-Recovered Fuel Costs
Regulatory assets, current
Regulatory Asset, Current
Other Retail Revenues
Other Retail [Member]
Revenues from retail classes other than residential, commercial and industrial.
Remeasurement of Excess ADIT
Effective Income Tax Rate Reconciliation, Remeasurement Of Excess ADIT, Percentage
Effective Income Tax Rate Reconciliation, Remeasurement Of Excess ADIT, Percentage
Amendment Flag
Amendment Flag
Commercial Paper
Commercial Paper
Stock Appreciation Rights (SARs)
Stock Appreciation Rights (SARs) [Member]
Settlement agreement securitization bonds regulatory assets recovery
Settlement Agreement Securitization Bonds Regulatory Assets Recovery
Settlement Agreement Securitization Bonds Regulatory Assets Recovery
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.
Restrictions on Cash and Cash Equivalents
Restrictions on Cash and Cash Equivalents [Table Text Block]
Change in Advances from Affiliates, Net
Proceeds From (Payments For) Advances From Affiliate
Proceeds From (Payments For) Advances From Affiliate
Change in Fair Value Recognized in AOCI, Net of Tax
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Sale of stock, number of shares issued in transaction (in shares)
Sale of Stock, Number of Shares Issued in Transaction
FINANCING ACTIVITIES
Debt Disclosure [Text Block]
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Recovery of Erroneously Awarded Compensation Disclosure [Line Items]
Debt instrument, face amount
Debt Instrument, Face Amount
Long-term Risk Management Liabilities
Derivative Liability, Noncurrent
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Total Risk Management Assets
Derivative Asset Including Netting
Derivative Asset Including Netting
Notes Payable
Notes Payable, Other Payables [Member]
Beginning Balance
Ending Balance
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs
Property Taxes
Property Taxes
Property Taxes
Property Taxes
Cash and Cash Equivalents
Cash and Cash Equivalents
Cash and Cash Equivalents, at Carrying Value
Revised requested net annual increase
Revised Requested Net Annual Increase
Revised Requested Net Annual Increase
Other Investing Activities
Payments for (Proceeds from) Other Investing Activities
Long-term Risk Management Assets
Other Noncurrent Assets [Member]
Regulatory asset, fuel disallowance
Regulatory Asset, Fuel Disallowance
Regulatory Asset, Fuel Disallowance
Other Current Liabilities
Increase (Decrease) in Other Current Liabilities
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]
Undepreciated Utility Plant Balances of Amos, Mitchell and Mountaineer (as of December 31, 2022)
Jurisdictional Plant Balances [Member]
Jurisdictional Plant Balances
Requested debt capital structure
Requested Debt Capital Structure
Requested Debt Capital Structure
Income Tax (Expense) Benefit
Reclassification from AOCI, Current Period, Tax
FERC Annual Revenue Requirement
FERC Annual Revenue Requirement [Table Text Block]
FERC Annual Revenue Requirement
KPCo
Kentucky Power Co [Member]
Kentucky Power Company Member
Fuel
Inventory, Raw Materials, Gross
Current Risk Management Liabilities
Other Current Liabilities [Member]
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]
Public Utilities General Disclosures [Table]
Public Utilities General Disclosures [Table]
Construction Expenditures Included in Current Liabilities as of March 31,
Construction Expenditures Included in Current Liabilities as of March 31,
Construction in Progress Expenditures Incurred but Not yet Paid
Sales of Investment Securities
Proceeds from Sale, Maturity and Collection of Investments
2.06% Securitization Bonds
2.06% Securitization Bonds [Member]
2.06% Securitization Bonds
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Short-Term Debt [Table]
Short-Term Debt [Table]
Accounts Payable
Increase (Decrease) in Accounts Payable
Adjustment To PEO Compensation, Footnote
Adjustment To PEO Compensation, Footnote [Text Block]
Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table]
Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table]
Principal Payments for Finance Lease Obligations
Finance Lease, Principal Payments
Pollution Control Bonds
Long-Term Pollution Control Bond
Designated as Hedging Instrument
Designated as Hedging Instrument [Member]
EARNINGS (LOSS) ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS, Basic
Earnings Attributable to AEP Common Shareholders, Basic
Net Income (Loss) Available to Common Stockholders, Basic
Compensation Actually Paid vs. Other Measure
Compensation Actually Paid vs. Other Measure [Text Block]
Requested equity capital structure
Requested Equity Capital Structure
Requested Equity Capital Structure
SWEPCo
SWEPCo
Southwestern Electric Power Company [Member]
Southwestern Electric Power Company Member
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member]
TOTAL ASSETS
Assets
Total Assets
Assets
Retail, Trading and Marketing Revenues
Marketing, Competitive Retail and Renewable [Member]
Marketing, Competitive Retail and Renewable [Member]
Securitized purchased power expenses
Securitized Purchased Power Expenses
Securitized Purchased Power Expenses
Accrued Tax Benefits
Income Taxes Receivable, Current
Deferred Credits and Other Noncurrent Liabilities
Other Liabilities, Noncurrent
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization
Forgone Recovery due to Violation of Home Country Law, Amount
Forgone Recovery due to Violation of Home Country Law, Amount
Derivative Instruments and Hedging Activities Disclosures [Table]
Derivative Instruments and Hedging Activities Disclosures [Table]
Statutory Accounting Practice, Jurisdiction [Domain]
Statutory Accounting Practice, Jurisdiction [Domain]
Commitments and Contingencies (Note 5)
Commitments and Contingencies
Schedule of Effective Income Tax Rate Reconciliation
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Termination Date
Trading Arrangement Termination Date
Acquisitions of Nuclear Fuel
Payments for Nuclear Fuel
Industrial Revenues
Industrial [Member]
Retail revenues from the industrial class.
Not Designated as Hedging Instrument
Not Designated as Hedging Instrument [Member]
Debt Instrument [Axis]
Debt Instrument [Axis]
Weighted-Average Dilutive Effect of Stock-Based Awards (in dollars 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.
David M. Feinberg Trading Arrangement on June 17, 2025 [Member]
David M. Feinberg Trading Arrangement on June 17, 2025
OVEC-Related Purchased Power
OVEC-Related Purchased Power [Member]
OVEC-Related Purchased Power
NET INCOME
Net Income (Loss)
Net Income
Net Income (Loss) Attributable to Parent
Trading Arrangement:
Trading Arrangement [Axis]
Book Values and Fair Values of Long-term Debt
Fair Value, by Balance Sheet Grouping [Table Text Block]
Pay vs Performance Disclosure, Table
Pay vs Performance [Table Text Block]
AEPTHCo
Transmission Operations [Member]
Transmission Operations Member.
Equity Awards Adjustments, Excluding Value Reported in Compensation Table
Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member]
0.94% Note Payable
0.94% Note Payable [Member]
0.94% Note Payable
Discontinued fair value hedge, increase (decrease)
Hedged Liability, Discontinued Fair Value Hedge, Cumulative Increase (Decrease)
Entity File Number
Entity File Number
FERC 2021 PJM and SPP Transmission Formula Rate Challenge
FERC 2021 PJM and SPP Transmission Formula Rate Challenge [Member]
FERC 2021 PJM and SPP Transmission Formula Rate Challenge
Transource Energy
Transource Energy [Member]
Transource Energy [Member]
Consolidated Entities [Domain]
Consolidated Entities [Domain]
Noncontrolling Interests
Noncontrolling Interest [Member]
Income Statement [Abstract]
Income Statement [Abstract]
Entity Address, Address Line One
Entity Address, Address Line One
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.
WPCo Portion
WPCo Portion [Member]
WPCo Portion
Transfers into Level 3
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3
Common Stock Dividends
Dividends, Common Stock
Name
Forgone Recovery, Individual Name
February 2021 Severe Storm Fuel Costs
Unrecovered Winter Storm Fuel Costs [Member]
Unrecovered Winter Storm Fuel Costs
Award Timing MNPI Considered
Award Timing MNPI Considered [Flag]
Forward Sales Agreement
Forward Sales Agreement [Member]
Forward Sales Agreement
Schedule of Customer Accounts Receivable Managed Portfolio
Schedule Of Customer Accounts Receivable Managed Portfolio [Table Text Block]
Customer accounts receivable managed portfolio.
Generating Units Probable of Abandonment
Generating Units Probable of Abandonment [Member]
Generating Units Probable of Abandonment [Member]
Securitized Assets
Securitized Regulatory Transition Assets, Noncurrent
Outstanding Aggregate Erroneous Compensation Amount
Outstanding Aggregate Erroneous Compensation Amount
Public Utility [Axis]
Public Utility [Axis]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interim annual base rate increase
Interim Annual Base Rate Increase
Interim Annual Base Rate Increase
PEO Actually Paid Compensation Amount
PEO Actually Paid Compensation Amount
Requested annual increase
Requested Annual Increase
Requested annual increase.
Adjustment to Compensation:
Adjustment to Compensation [Axis]
Net Income Attributable to Noncontrolling Interests
Net Income (Loss) Attributable to Noncontrolling Interest
Document Quarterly Report
Document Quarterly Report
Maturity Period Four
Maturity Period Four [Member]
Schedule of Proceeds on Sale of Receivables to AEP Credit
Schedule Of Proceeds On Sale Of Receivables To AEP Credit [Table Text Block]
Proceeds on sale of receivables to AEP Credit.
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Pension Adjustments Service Cost
Pension Adjustments Service Cost [Member]
Amortization of Nuclear Fuel
Amortization of Nuclear Fuel
The expense charged against earnings for the periodic recognition of nuclear fuel usage.
Requested annual revenue requirement
Requested Annual Revenue Requirement
Requested Annual Revenue Requirement
Related and Nonrelated Parties [Axis]
Related and Nonrelated Parties [Axis]
WEIGHTED AVERAGE NUMBER OF BASIC AEP COMMON SHARES OUTSTANDING (in shares)
Weighted-Average Number of Basic AEP Common Shares Outstanding (in shares)
Weighted Average Number of Shares Outstanding, Basic
Stock Price or TSR Estimation Method
Stock Price or TSR Estimation Method [Text Block]
Margin Deposits
Increase (Decrease) in Margin Deposits Outstanding
I&M
I&M
Indiana Michigan Power Company [Member]
Indiana Michigan Power Company Member
Beginning balance
Ending balance
TOTAL EQUITY
Equity
Equity, Including Portion Attributable to Noncontrolling Interest
AEP Credit
AEP Credit, Inc. [Member]
AEP Credit, Inc. Variable Interest Entity Member
Name
Awards Close in Time to MNPI Disclosures, Individual Name
Entity Filer Category
Entity Filer Category
Fixed performance obligations
Revenue, Remaining Performance Obligation, Amount
Long-term Risk Management Assets
Long-term Risk Management Assets, Net
Derivative Asset, Noncurrent
Regulatory Asset Return Disclosure [Axis]
Regulatory Asset Return Disclosure [Axis]
Regulatory Asset Return Disclosure Axis
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Gross Unrealized Losses
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Gross Property Additions
Segment, Expenditure, Addition to Long-Lived Assets
Tax Reform Excess ADIT Reversal
Effective Income Tax Rate Reconciliation, Tax Reform, Excess ADIT Reversal, Percentage
Effective Income Tax Rate Reconciliation, Tax Reform, Excess ADIT Reversal, Percentage
Maturity Of Fair Value Risk Management Contracts [Axis]
Maturity Of Fair Value Risk Management Contracts [Axis]
AEP Texas Transition and Restoration Funding
AEP Texas Transition Funding and Restoration Funding [Member]
AEP Texas Transition and Restoration Funding [Member]
Equity Securities – Mutual Funds
Mutual Fund [Member]
Other Current Liabilities
Other Liabilities, Current
Notional Volume of Derivative Instruments
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Q. Shane Lies, Trading Arrangement on May 19, 2025 [Member]
Q. Shane Lies, Trading Arrangement on May 19, 2025
All Trading Arrangements
All Trading Arrangements [Member]
Tangible capital to tangible assets
Banking Regulation, Tangible Capital Ratio, Actual
Compensation Actually Paid vs. Net Income
Compensation Actually Paid vs. Net Income [Text Block]
Schedule of Earnings Per Share, Basic and Diluted
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity, Primary Beneficiary [Member]
Rule 10b5-1 Arrangement Adopted
Rule 10b5-1 Arrangement Adopted [Flag]
Awards Close in Time to MNPI Disclosures
Awards Close in Time to MNPI Disclosures [Table]
Derivative [Line Items]
Derivative [Line Items]
Net Cash Paid for Income Taxes
Net Cash Paid for Income Taxes
Cash Paid (Received) for Transferable Tax Credits
Income Taxes Paid, Net
Other Commitments [Line Items]
Other Commitments [Line Items]
Equity Method Investments
Equity Method Investments
Total Regulatory Assets Pending Final Regulatory Approval
Regulatory Assets Pending Final Approval [Member]
Regulatory Assets Pending Final Regulatory Approval [Member]
Pay vs Performance Disclosure [Line Items]
Peer Group Total Shareholder Return Amount
Peer Group Total Shareholder Return Amount
Money Pool Participant by Company Type [Axis]
Money Pool Participant by Company Type [Axis]
Money Pool Participant by Company Type.
Risk Management Assets
Risk Management Assets [Abstract]
Risk Management Assets
RATE MATTERS
Public Utilities Disclosure [Text Block]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]
Derivative [Table]
Derivative [Table]
State Transcos [Member]
State Transcos [Member]
State Transcos [Member]
Approved carrying charges, recovery period
Approved Carrying Charges, Recovery Period
Approved Carrying Charges, Recovery Period
Texas
TEXAS
Fair Value of Derivative Instruments
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
ARO Type [Axis]
ARO Type [Axis]
ARO Type
Other Performance Measure, Amount
Other Performance Measure, Amount
Common Stock – Shares Outstanding (in shares)
Common Stock, Shares, Outstanding
Interest Rate
Short-Term Debt, Weighted Average Interest Rate, at Point in Time
Advances to Affiliates
Other Receivables, Net, Current
Average rate base
Public Utilities, Average Rate Base
Public Utilities, Average Rate Base
Other Short-term Debt
Short-Term Bank Loans and Notes Payable
Delinquent Securitized Accounts Receivable
Delinquent Amount at End of Period on Loans Managed and Securitized or Asset-Backed Financing Arrangement
Obligations Under Operating Leases
Operating Lease, Liability, Noncurrent
ETT Interim Transmission Rates
ETT Interim Transmission Rates [Member]
ETT Interim Transmission Rates [Member]
Other Revenues
Product and Service, Other [Member]
Other-Than-Temporary Impairments
Debt Securities, Available-for-Sale, Realized Loss
Regulated Operation, Regulatory Asset [Table]
Regulated Operation, Regulatory Asset [Table]
Customer Deposits
Contract with Customer, Liability, Current
Deferred Charges and Other Noncurrent Assets
Deferred Charges and Other Noncurrent Assets
Deferred Charges and Other Noncurrent Assets
Notes Payable
Loans Payable [Member]
Service Cost
Defined Benefit Plan, Service Cost
Entity Tax Identification Number
Entity Tax Identification Number
APCo Appalachian Consumer Rate Relief Funding
Appalachian Consumer Rate Relief Funding [Member]
Appalachian Consumer Rate Relief Funding [Member]
Average Borrowings
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.
Securitization Bonds
Secured Debt
Retirement Plan Type [Axis]
Retirement Plan Type [Axis]
Accrued Taxes
Taxes Payable, Current
Asset Retirement Obligations
Asset Retirement Obligations, Noncurrent
Equity Components [Axis]
Equity Components [Axis]
Regulatory asset, net investment
Regulatory Asset, Net Investment
Regulatory Asset, Net Investment
TOTAL EXPENSES
Costs and Expenses
Effective Income Tax Rate Reconciliation [Line Items]
Effective Income Tax Rate Reconciliation [Line Items]
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)
Interest Income
Investment Income, Interest and Dividend
Nuclear contingencies, number of units
Nuclear Contingencies, Number Of Units
Nuclear Contingencies, Number Of Units
Weighted Average
Weighted Average [Member]
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member]
Schedule of Fixed Income And Equity Securities Activity
Debt and Equity Securities Within Other Temporary Investments [Table Text Block]
Debt and equity securities within Other Temporary Investments.
Request to Update SWEPCo Generation Depreciation Rates
Request to Update SWEPCo Generation Depreciation Rates [Member]
Request to Update SWEPCo Generation Depreciation Rates
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.
West Virginia
WEST VIRGINIA
Under recovered costs disallowance
Under-Recovered Costs Disallowance
Under-Recovered Costs Disallowance
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
Weighted-Average Interest Rate
Debt, Weighted Average Interest Rate
Amortization of Pension and OPEB Deferred Costs, Net of Tax
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Distribution
Public Utilities, Property, Plant and Equipment, Distribution, Gross
Public Utilities, Property, Plant and Equipment, Distribution, Gross
CURRENT ASSETS
Assets, Current [Abstract]
Reversal of Origination 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.
Consolidation Items [Axis]
Consolidation Items [Axis]
Rate Matters (Note 4)
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.
Shares were Held in Treasury (in shares)
Treasury Stock, Common, Shares
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Product and Service [Domain]
Product and Service [Domain]
Adjusted cost of debt securities
Adjusted cost of debt securities
Adjusted cost of debt securities.
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Abstract]
Sale of stock, initial price per share (in dollars per share)
Sale Of Stock, Initial Price Per Share
Sale Of Stock, Initial Price Per Share
Risk Management Liabilities
Risk Management Liabilities [Abstract]
Risk Management Liabilities
Accumulated Depreciation and Amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Including Public Utilities
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Including Public Utilities
Security Exchange Name
Security Exchange Name
Related Party Transaction [Domain]
Related Party Transaction [Domain]
Approved net increase in Kentucky annual revenues
Approved Net Increase in Kentucky Annual Revenues
Approved Net Increase in Kentucky Annual Revenues
Borrowings
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
Q. Shane Lies, Trading Arrangement on October 1, 2025 [Member]
Q. Shane Lies, Trading Arrangement on October 1, 2025
Spent Nuclear Fuel Obligation
Spent Nuclear Fuel Obligation [Member]
Spent Nuclear Fuel Obligation
Regulatory asset, deferral, denial of recovery
Regulatory Asset, Deferral, Denial Of Recovery
Regulatory Asset, Deferral, Denial Of Recovery
Total Short-term Debt
Short-term Debt – Nonaffiliated
Short-Term Debt
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.
Forgone Recovery, Explanation of Impracticability
Forgone Recovery, Explanation of Impracticability [Text Block]
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
Schedule of Available-For-Sale Securities
Debt Securities, Available-for-Sale [Table Text Block]
Gross Realized Gains on Investment Sales
Realized Investment Gains (Losses)
Noncash Acquisitions Under Finance Leases
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability
Regulatory Asset Return Disclosure [Domain]
Regulatory Asset Return Disclosure [Domain]
Regulatory Asset Return Disclosure [Domain]
David M. Feinberg [Member]
David M. Feinberg
Unbilled Receivables Related to Securitization
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.
Beginning balance (in shares)
Ending balance (in shares)
Common Stock – Shares Issued (in shares)
Common Stock, Shares, Issued
Entity [Domain]
Entity [Domain]
Regulatory asset, requested to be financed through securitization
Regulatory Asset, Requested To Be Financed Through Securitization
Regulatory Asset, Requested To Be Financed Through Securitization
Line of credit facility, borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Approved return on equity
Public Utilities, Approved Return on Equity, Percentage
Total Liabilities
Total Risk Management Liabilities
Fair value, liabilities
Derivative Liability
Insider Trading Policies and Procedures Adopted
Insider Trading Policies and Procedures Adopted [Flag]
Schedule of Comparative Accounts Receivable Information
Comparative Accounts Receivable Information [Table Text Block]
Comparative Accounts Receivable Information
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.
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.
Forward Market Price
Measurement Input, Commodity Forward And Market Price [Member]
Measurement Input, Commodity Forward And Market Price
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]
Maximum Potential Loss By Registrants Under Lease Agreements
Maximum Potential Loss By Registrants Under Lease Agreements [Table Text Block]
Maximum Potential Loss By Registrants Under Lease Agreements
Common Stock – Shares Authorized (in shares)
Common Stock, Shares Authorized
Total MTM Derivative Contract Net Assets (Liabilities)
Derivative Assets (Liabilities), at Fair Value, Net
Annual increase april 1st surcharge
Annual Increase April 1st Surcharge
Separate surcharge that allows up to a 3% annual increase in rates on April 1st for four consecutive years after implementation of base rates.
Schedule of 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.
Within Current Year
Within Current Year [Member]
Maturity of risk management contracts within current year.
Approved recovery under recovered costs
Approved Recovery Under-Recovered Costs
Approved Recovery Under-Recovered Costs
Regulatory Assets Currently Earning a Return
Regulatory Assets Currently Earning Return [Member]
Regulatory Assets Currently Earning a Return
Statement of Financial Position Location, Activity, Accrual [Axis]
Statement of Financial Position Location, Activity, Accrual [Axis]
Long-term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Disallowance of fuel costs
Regulatory Asset, Disallowance Of Fuel Costs
Regulatory Asset, Disallowance Of Fuel Costs
Related Party
Related Party [Member]
Amortization of Net Actuarial Loss
Defined Benefit Plan, Amortization of Gain (Loss)
Statement of Financial Position Location, Balance [Axis]
Statement of Financial Position Location, Balance [Axis]
Interest Expense
Interest Expense
Interest Expense, Nonoperating
Servicing Contracts
Servicing Contracts [Member]
Maximum percentage debt to capitalization
Maximum Percentage Debt to Capitalization
Maximum level of debt to capitalization persuant to credit agreement leverage restrictions.
Deferred Income Taxes
Deferred Income Tax Expense (Benefit)
AOCI Gain (Loss) Net of Tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax
Proceeds from Investment Sales
Proceeds from Sale of Short-Term Investments
Regulatory asset, recovery of fuel costs
Regulatory Asset, Recovery Of Fuel Costs
Amount of Dolet Hills Fuel Costs Approved to Recover in 2021.
Electricity, Transmission and Distribution
Electricity, Transmission And Distribution Revenues [Member]
Electricity, Transmission And Distribution Revenues
Total Accounts Receivable
Accounts Receivable, after Allowance for Credit Loss, Current
Notes Payable
Other Notes Payable
Subsidiary, ownership percentage, parent
Subsidiary, Ownership Percentage, Parent
Regulatory assets expected to be recovered through securitization
Regulatory Assets Expected to be Recovered Through Securitization
Regulatory Assets Expected to be Recovered Through Securitization
Book Value
Total Long-term Debt Outstanding
Long-Term Debt
Pension Adjustments Prior Service Cost
Pension Adjustments Prior Service Cost [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Line Inspection Costs
Line Inspection Costs [Member]
Line Inspection Costs
Customers
Accounts Receivable, before Allowance for Credit Loss, Current
Net Uncollectible Accounts Receivable Written-Off
Net Uncollectible Accounts Receivable Written Off
Net uncollectible accounts receivable written off.
Securitized under recovered rider costs
Securitized Under-Recovered Rider Costs
Securitized Under-Recovered Rider Costs
DISPOSITIONS
Mergers, Acquisitions and Dispositions Disclosures [Text Block]
Sale of stock, underwiring discount, per share (in dollars per share)
Sale Of Stock, Underwiring Discount, Per Share
Sale Of Stock, Underwiring Discount, Per Share
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Other Operation
Utilities Operating Expense, Operations [Member]
Utilities Operating Expense, Operations
Commercial Paper
Commercial Paper [Member]
Total Gain (Loss) on Risk Management Contracts
Gain (Loss) on Derivative Instruments, Net, Pretax
Cash Paid (Received) for Transferable Tax Credits
Tax Paid (Received) For Transferable Tax Credits
Tax Paid (Received) For Transferable Tax Credits
Pension Benefits Adjustments, Footnote
Pension Benefits Adjustments, Footnote [Text Block]
Total Shareholder Return Vs Peer Group
Total Shareholder Return Vs Peer Group [Text Block]
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.
Sabine
Sabine Mining Co [Member]
Sabine Mining Company Variable Interest Entity Member
Notional amount, energy measure
Derivative, Nonmonetary Notional Amount, Energy Measure
Schedule of 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.
T&D
T&D
Transmission And Distribution Companies [Member]
Transmission And Distribution Companies [Member]
MEZZANINE EQUITY
Temporary Equity [Abstract]
Accounting Policies [Abstract]
Accounting Policies [Abstract]
REVENUES
Revenues [Abstract]
Fair Value Measurements
Fair Value Measurement, Policy [Policy Text Block]
Current Fiscal Year End Date
Current Fiscal Year End Date
Within 1 year
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value
Regulatory Asset [Domain]
Regulatory Asset [Domain]
Other Temporary Investments
Short-Term Investments
PEO Name
PEO Name
3.44% Note Payable
3.44% Note Payable [Member]
3.44% Note Payable
2020 Texas Base Rate Case
2020 Texas Base Rate Case [Member]
2020 Texas Base Rate Case
All Award Types
Award Type [Domain]
Regulatory Assets
Regulatory Asset, Current [Member]
Regulatory Asset, Current
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Liabilities
Hedged Liability, Active And Discontinued Fair Value Hedge, Cumulative Increase (Decrease)
Hedged Liability, Active And Discontinued Fair Value Hedge, Cumulative Increase (Decrease)
Compensation Actually Paid vs. Company Selected Measure
Compensation Actually Paid vs. Company Selected Measure [Text Block]
Regulatory Liabilities and Deferred Investment Tax Credits
Regulatory Liability, Noncurrent
Non-PEO NEO
Non-PEO NEO [Member]
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.
Maintenance
Utilities Operating Expense, Maintenance
Paid-in Capital
Additional Paid-in Capital [Member]
Hedging Relationship [Axis]
Hedging Relationship [Axis]
Customer Deposits
Increase (Decrease) in Contract with Customer, Asset
Total Other Temporary Investments and Restricted Cash
Other Temporary Investments And Restricted Cash [Member]
Other Temporary Investments And Restricted Cash
Notes Payable
Notes Payable
BENEFIT PLANS
Retirement Benefits [Text Block]
Short-Term Debt [Line Items]
Short-Term Debt [Line Items]
New Accounting Standards
New Accounting Pronouncements, Policy [Policy Text Block]
Accrued Unbilled Revenues
Unbilled Receivables, Current
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Name
Measure Name
Authorized Short-term Borrowing Limit
Authorized Short Term Borrowing Limit
Authorized Short-term Borrowing Limit by regulatory orders.
Entity Interactive Data Current
Entity Interactive Data Current
Number of operating segments
Number of Operating Segments
Proceeds from contributed capital
Proceeds from Contributed Capital
Fair Value, Assets and Liabilities Measured on Recurring Basis
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Table]
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.
Pension and OPEB
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
MEMBER’S EQUITY
Members' Equity [Abstract]
Realized Gain (Loss) Included in Net Income (or Changes in Net Assets)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings
Cash collateral received from third-parties
Securities Received as Collateral
NOLC Costs
NOLC Costs [Member]
NOLC Costs
Interest Rate
Debt Instrument, Interest Rate, Stated Percentage
Corporate and Other
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
SUPPLEMENTARY INFORMATION
SUPPLEMENTARY INFORMATION
Supplemental Cash Flow Information [Abstract]
EARNINGS (LOSS) ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS, Diluted
Earnings Attributable to AEP Common Shareholders, Diluted
Net Income (Loss) Available to Common Stockholders, Diluted
Gain (Loss) on Hedging Instruments
Derivative Instruments, Gain (Loss) [Table Text Block]
Other Long-term Debt
Other Long-Term Debt
Effective Income Tax Rate
Effective Income Tax Rate Reconciliation, Percent
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.
OPERATING INCOME
Operating Income (Loss)
Welsh Plant, Units 1 and 3 Accelerated Depreciation
Welsh Unit 1 and 3 Accelerated Depreciation [Member]
Welsh Unit 1 and 3 Accelerated Depreciation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Securitized Debt for Receivables – AEP Credit
Short-term – Securitized Debt of Receivables
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount
Commodity Hedges
Commodity [Member]
Regulatory asset, fuel disallowance, deferral
Regulatory Asset, Fuel Disallowance, Deferral
Regulatory Asset, Fuel Disallowance, Deferral
Number of reportable segments
Number of Reportable Segments
TOTAL LIABILITIES, MEZZANINE EQUITY AND TOTAL EQUITY
Liabilities and Equity
2024-2025 Virginia Biennial Under-Earnings
Virginia Biennial Under-Earnings [Member]
Virginia Biennial Under-Earnings
Dividends Paid to Member
Dividends
Rule 10b5-1 Arrangement Terminated
Rule 10b5-1 Arrangement Terminated [Flag]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [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
Stand alone treatment of nolcs annual revenue increase
Stand Alone Treatment of NOLCs Annual Revenue Increase
Stand Alone Treatment of NOLCs Annual Revenue Increase
Risk Management Liabilities
Current Risk Management Liabilities, Net
Derivative Liability, Current
DERIVATIVES AND HEDGING
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Settlements
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases, Sales, Issues, Settlements
Regulated Operations [Abstract]
Regulated Operations [Abstract]
Requested annual base rate increase
Public Utilities, Requested Rate Increase (Decrease), Amount
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Underlying Security Market Price Change
Underlying Security Market Price Change, Percent
Expected Return on Plan Assets
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Measurement Input Type [Axis]
Measurement Input Type [Axis]
Annual increase, surcharges, number of consecutive years
Annual Increase, April 1st Surcharge, Number Of Consecutive Years
Annual Increase, April 1st Surcharge, Number Of Consecutive Years
Individual:
Individual [Axis]
Settlement agreement return on common equity
Settlement Agreement Return on Common Equity
Settlement Agreement Return on Common Equity
Future payments
Registration Payment Arrangement, Maximum Potential Consideration
Accumulated Other Comprehensive Income (Loss)
Total
AOCI Attributable to Parent [Member]
Net Loans to (Borrowings from)
Net Loans to (Borrowings from) the Utility Money
Net Loans to (Borrowings from) the Utility Money
Schedule of Regulatory Assets
Schedule of Regulatory Assets [Table Text Block]
Product and Service [Axis]
Product and Service [Axis]
Statement [Line Items]
Statement [Line Items]
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.
Measurement Input Type [Domain]
Measurement Input Type [Domain]
EXPENSES
Operating Expenses [Abstract]
Compensation Actually Paid vs. Total Shareholder Return
Compensation Actually Paid vs. Total Shareholder Return [Text Block]
Derivatives and Hedging
Derivatives, Policy [Policy Text Block]
Schedule of Utility Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits
Schedule Of Utility Money Pool Participants Money Pool Activity And Authorized Borrowing Limits [Table 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.
Minimum
Low
Minimum [Member]
Significant Unobservable Inputs for Level 3
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]
Maturity Period 3
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
David M. Feinberg Trading Arrangement on June 3, 2025 [Member]
David M. Feinberg Trading Arrangement on June 3, 2025
Adoption Date
Trading Arrangement Adoption Date
Miscellaneous
Other Receivables
Transmission Revenues
Wholesale Transmission [Member]
Wholesale Transmission.
Spent Nuclear Fuel and Decommissioning Trusts
Spent Nuclear Fuel and Decommissioning Trusts [Abstract]
Spent Nuclear Fuel and Decommissioning Trusts
Regulatory Liability for Over-Recovered Fuel Costs
Regulatory Liability, Deferred Fuel Costs
Regulatory Liability, Deferred Fuel Costs
Notional amount, volume
Derivative, Nonmonetary Notional Amount, Volume
Segments [Axis]
Segments [Axis]
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]
Approved Recovery Period
Regulatory Asset, Amortization Period
U.S. Federal Statutory Rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Derivative Instrument [Axis]
Derivative Instrument [Axis]
Exercise Price
Award Exercise Price
Arrangement Duration
Trading Arrangement Duration
Impact of Cash Flow Hedges on the Balance Sheet
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]
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.
EQUITY
COMMON SHAREHOLDER’S EQUITY
Equity, Attributable to Parent [Abstract]
Subsidiaries
Subsidiaries [Member]
Bad Debt Reserves Related to Securitization
Bad Debt Reserves Related to Securitized Sale of Accounts Receivable
A valuation allowance for securitized receivables that are expected to be uncollectible.
Period September 2024 through August 2025
Base Rate Increase, Period Two [Member]
Base Rate Increase, Period Two
Material Terms of Trading Arrangement
Material Terms of Trading Arrangement [Text Block]
Kpco interest in mitchell plant
KPCo Interest in Mitchell Plant
KPCo Interest in Mitchell Plant
Issuance of Short-term Debt with Original Maturities greater than 90 Days
Proceeds from Short-Term Debt, Maturing in More than Three Months
All Individuals
All Individuals [Member]
Regulatory Liabilities
Regulatory Liability, Noncurrent [Member]
Regulatory Liability, Noncurrent
Retirements and Principal Payments
Schedule of Extinguishment of Debt [Table Text Block]
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Abstract]
Entities [Table]
Entities [Table]
Other Income
Other Nonoperating Income (Expense)
OPEB
Other Postretirement Benefits Plan [Member]
Statement of Stockholders' Equity [Abstract]
Statement of Stockholders' Equity [Abstract]
Noncash Acquisitions Under Finance Leases
Noncash Acquisitions Under Finance Leases
Lease Obligation Incurred
Maximum percentage paid to selling agents
Sale Of Stock, Percentage Paid to Selling Agents, Maximum
Maximum percentage of gross offering proceeds of the shares sold which is paid to selling agents with respect to each equity distribution agreement.
Renewable Generation Revenues
Renewable Generation [Member]
Renewable Generation
Gross Unrealized Gains
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Change in Other Noncurrent Assets
Increase (Decrease) in Other Noncurrent Assets
Accelerated Depreciation Regulatory Asset
Accelerated Depreciation
The amount of accelerated depreciation as a regulatory asset for plants to be retired.
Securitization Bonds
Securitization Bonds [Member]
A collateralized debt obligation (backed by pledge, mortgage or other lien on the entity's assets).
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other Operation and Maintenance
Utilities Operating Expense, Maintenance and Operations
Sale of stock, authorized amount (in shares)
Sale Of Stock, Authorized Amount, Shares
Sale Of Stock, Authorized Amount, Shares
Allowance for Equity Funds Used During Construction
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
Assets:
Assets, Fair Value Disclosure [Abstract]
Disposal Groups, Including Discontinued Operations [Table]
Disposal Groups, Including Discontinued Operations [Table]
Spent Nuclear Fuel Obligation
Spent Nuclear Fuel Obligation, Noncurrent
Related and Nonrelated Parties [Domain]
Related and Nonrelated Parties [Domain]
Total MTM Derivative Contract Net Assets (Liabilities) Recognized
Derivative Asset (Liability) Net, Subject To Master Netting Arrangement, Before Offset
Derivative Asset (Liability) Net, Subject To Master Netting Arrangement, Before Offset
TOTAL NONCURRENT LIABILITIES
Noncurrent Liabilities
Liabilities, Noncurrent
2.29% Securitization Bonds
2.29% Securitization Bonds [Member]
2.29% Securitization Bonds
Accounts receivable and accrued unbilled revenues
Accounts and Financing Receivables, Held-for-Sale
Deferred Income Taxes
Deferred Income Tax Liabilities, Net
Settlement agreement annual increase
Settlement Agreement Annual Increase
Settlement Agreement Annual Increase
Other Operation
Utilities Operating Expense, Operations
Schedule of Maximum and Minimum Interest Rates for Funds Either Borrowed from or Loaned to Utility Money Pool
Schedule Of Maximum And Minimum Interest Rates For Funds Either Borrowed From Or Loaned To Utility Money Pool [Table 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.
Affiliated Accounts Receivable Contracts with Customers
Affiliated Accounts Receivable Contracts with Customers [Table Text Block]
Tabular disclosure of affiliated accounts receivable contracts with customers.
Schedule of 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.
Energy Contracts
Energy Contracts [Member]
Risk management commodity contracts whose primary underlying risk is tied energy contracts.
Equity Securities – Mutual Funds
Mutual Funds Equity [Member]
Mutual Funds Equity
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.
Measure:
Measure [Axis]
Base Rate Period [Domain]
Base Rate Period [Domain]
Base Rate Period [Domain]
Issuance of Common Stock (in shares)
Stock Issued During Period, Shares, New Issues
Senior Unsecured Notes
Unsecured Debt
Other Cash Deposits
Other Cash Deposits [Member]
Other Cash Deposits
Contingently Redeemable Performance Share Awards
Redeemable Noncontrolling Interest, Equity, Performance Shares, Carrying Amount
The fair value as of the balance sheet date of contingently redeemable performance share awards.
Entity Emerging Growth Company
Entity Emerging Growth Company
Securitized plant retirement costs
Securitized Plant Retirement Costs
Securitized Plant Retirement Costs
Change in Advances to Affiliates, Net
Change in Advances to Affiliates, Net
Payments For (Proceeds From) Advances To Affiliate
Payments For (Proceeds From) Advances To Affiliate
Base Rate [Axis]
Base Rate [Axis]
Base Rate Axis.
FERC Matter [Axis]
FERC Matter [Axis]
FERC Matter
Statement of Financial Position Location, Activity, Accrual [Domain]
Statement of Financial Position Location, Activity, Accrual [Domain]
Non-GAAP Measure Description
Non-GAAP Measure Description [Text Block]
Maximum length of time to hedge exposure to variability
Maximum Length of Time Hedged in Price Risk Cash Flow Hedge
Amount of (Gain) Loss Reclassified from AOCI
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax
Junior Subordinated Notes
Junior Subordinated Notes [Member]
Junior Subordinated Notes
Deferred Fuel Over/Under-Recovery, Net
Deferred 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.
Equity Component [Domain]
Equity Component [Domain]
Vertically Integrated Utilities
Electricity [Member]
2023 Michigan Power Supply Cost Recovery
2023 Michigan Power Supply Cost Recovery [Member]
2023 Michigan Power Supply Cost Recovery
Taxes Other Than Income Taxes
Utilities Operating Expense, Taxes
Additional 402(v) Disclosure
Additional 402(v) Disclosure [Text Block]
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.
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Entity Shell Company
Entity Shell Company
Generation & Marketing
Generation and Marketing Revenues [Member]
Generation and Marketing Revenues.
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Statement [Table]
Statement [Table]
Generation
Generation
Public Utilities, Property, Plant and Equipment, Generation or Processing, Gross
Public Utilities, Property, Plant and Equipment, Generation or Processing, Gross
Counterparty Name [Axis]
Counterparty Name [Axis]
SIGNIFICANT ACCOUNTING MATTERS
NEW ACCOUNTING STANDARDS
Significant Accounting Policies [Text Block]
Other Long-term Debt
Other Long Term Debt [Member]
Other long term debt member
Consolidation Items [Domain]
Consolidation Items [Domain]
Heating Oil and Gasoline (Gallons)
Heating Oil And Gasoline Contract Member [Member]
Nominal volume used to calculate payments on a derivative instrument.
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Cash Paid for Interest, Net of Capitalized Amounts
Cash Paid for Interest, Net of Capitalized Amounts
Interest Paid, Excluding Capitalized Interest, Operating Activities
Level 1
Fair Value, Inputs, Level 1 [Member]
APCo Portion
APCo Portion [Member]
APCo Portion
TOTAL CURRENT ASSETS
Current Assets
Assets, Current
Statement of Cash Flows [Abstract]
Statement of Cash Flows [Abstract]
Senior Unsecured Notes
Senior Notes [Member]
Maximum Potential Loss
Max Potential Loss on Master Lease Agreements
Maximum potential loss on master lease agreements.
Requested recovery, under-recovered costs
Requested Recovery Under-Recovered Costs
Requested Recovery Under-Recovered Costs
Schedule of Long-Term Debt Instruments [Table]
Schedule of Long-Term Debt Instruments [Table]
Defined benefit plan, number of plans
Defined Benefit Plan, Number Of Unfunded Plans
Defined Benefit Plan, Number Of Unfunded Plans
DCC Fuel
DCC Fuel [Member]
DCC Fuel Variable Interest Entity Member
Advances from Affiliates
Other Short-Term Borrowings
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Requested recovery, under-recovered costs, period
Requested Recovery Under-Recovered Costs, Period
Requested Recovery Under-Recovered Costs, Period
INCOME TAXES
Income Tax Disclosure [Text Block]
Storm Reserve
Storm Reserve, Noncurrent
Storm Reserve, Noncurrent
Deferred Property Taxes
Deferred Property Taxes, Noncurrent
Deferred Property Taxes, Noncurrent
Generation Revenues
Wholesale Generation [Member]
Wholesale Generation.
Modified Rate Base Cost
Modified Rate Base Cost [Member]
Modified Rate Base Cost
Long-term Risk Management Liabilities
Other Noncurrent Liabilities [Member]
Retail Revenues:
Retail [Member]
Net Cash Flows from Financing Activities
Net Cash Provided by (Used in) Financing Activities
Average Loans
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.
Proceeds from Sale of Equity Method Investment
Proceeds from Sale of Equity Method Investments
Credit Facility [Axis]
Credit Facility [Axis]
Equity Distribution Agreement
Equity Distribution Agreement [Member]
Equity Distribution Agreement.
FERC Matter [Domain]
FERC Matter [Domain]
FERC Matter
Fair Value
Long-Term Debt, Fair Value
Entity Registrant Name
Entity Registrant Name
AEP Texas Restoration Funding
AEP Texas Central Transition Funding Co [Member]
AEP Texas Central Transition Funding Company Variable Interest Entity Member
Liabilities:
Offsetting Derivative Liabilities [Abstract]
Materials and Supplies
Materials and Supplies
Other Inventory, Supplies, Gross
Adjustment to Non-PEO NEO Compensation Footnote
Adjustment to Non-PEO NEO Compensation Footnote [Text Block]
Other Revenues
Regulated Operating Revenue, Other
Fair Value as of Grant Date
Award Grant Date Fair Value
Protected Cell of EIS
Protected Cell Of Energy Insurance Services, Inc. [Member]
Protected Cell Of Energy Insurance Services, Inc. Variable Interest Entity Member
Affiliated Entity
Affiliated Entity [Member]
Cash Paid (Received) for Transferable Tax Credits
Sale of Transferable Tax Credits
Sale of Transferable Tax Credits
Fixed Income Securities – Mutual Funds
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.
Level 2
Fair Value, Inputs, Level 2 [Member]
2025 Arkansas Base Rate Case
2025 Arkansas Base Rate Case [Member]
2025 Arkansas Base Rate Case
Disaggregated Revenues from Contracts with Customers
Disaggregation of Revenue [Table Text Block]
Issuance of Common Stock
Stock Issued During Period, Value, New Issues
Forecasted Undepreciated CCR and ELG Investments of Amos, Mitchell and Mountaineer (as of November 30, 2024)
Environmental Restoration Costs [Member]
Dividends Paid on Common Stock – Nonaffiliated
Payments of Ordinary Dividends, Noncontrolling Interest
Restatement Determination Date:
Restatement Determination Date [Axis]
Utility
Utility [Member]
Utility Company.
Title of 12(b) Security
Title of 12(b) Security
Common Stock
Common Stock, Value, Issued
Spent Nuclear Fuel and Decommissioning Trusts
Spent Nuclear Fuel And Decommissioning Trusts, Noncurrent
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.
Pirkey Generating Station (Unit No. 1)
Pirkey Generating Station (Unit No. 1) [Member]
Pirkey Generating Station (Unit No. 1) Member
Regulatory Assets
Noncurrent Regulatory Assets
Regulatory Asset, Noncurrent
Depreciation and Amortization
Depreciation and Amortization
Depreciation and Amortization
Utilities Operating Expense, Depreciation and Amortization
Mitchell & Mountaineer Plants
Mitchell & Mountaineer Plants [Member]
Mitchell & Mountaineer Plants
Short-term Debt:
Short-Term Debt [Abstract]
Trust Assets [Axis]
Trust Assets [Axis]
Trust Assets [Axis]
State and Local Income Taxes, Net
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
Schedule of Accounts Receivable and Accrued Unbilled Revenues
Schedule Of Accounts Receivable And Accrued Unbilled Revenues [Table Text Block]
Accounts receivable and accrued unbilled revenues under the sale of receivables agreement.
Base Rate [Domain]
Base Rate [Domain]
Base Rate Domain.
Employee Benefits and Pension Assets
Employee Benefits and Pension Assets, Noncurrent
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.
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
FINANCING ACTIVITIES
Net Cash Provided by (Used in) Financing Activities [Abstract]
TOTAL BASIC EARNINGS PER SHARE ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS (in dollars per share)
Weighted-Average Number of Basic AEP Common Shares Outstanding (in dollars per share)
Earnings Per Share, Basic
Unrecovered Winter Storm Fuel Costs
February 2021 Severe Storm Fuel Costs [Member]
February 2021 Severe Storm Fuel Costs
Issuance of Common Stock
Proceeds from Issuance of Common Stock
Cash and Cash Equivalents
Cash and Cash Equivalents [Member]
Award Timing MNPI Disclosure
Award Timing MNPI Disclosure [Text Block]
Ownership [Domain]
Ownership [Domain]
Aggregate Pension Adjustments Service Cost
Aggregate Pension Adjustments Service Cost [Member]
Dividends Payable [Line Items]
Dividends Payable [Line Items]
New Mexico Renewable Development
New Mexico Renewable Development [Member]
New Mexico Renewable Development
TOTAL CURRENT LIABILITIES
Current Liabilities
Liabilities, Current
Pollution Control Bonds
Pollution Control Bonds [Member]
Pollution Control Bonds Member.
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.
Requested equity capital structure
Public Utilities, Requested Equity Capital Structure, Percentage
Gross Amounts Offset
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset
Public Utilities, General Disclosures [Line Items]
Public Utilities, General Disclosures [Line Items]
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.
Domestic
Domestic [Member]
Domestic Member.
TOTAL REVENUES
Total Revenues
Total Revenues
Revenues
Entity Address, City or Town
Entity Address, City or Town
Maturity Of Fair Value Risk Management Contracts [Domain]
Maturity Of Fair Value Risk Management Contracts [Domain]
Maturity Of Fair Value Risk Management Contracts [Domain]
Issuance of Long-term Debt
Proceeds from Issuance of Long-Term Debt
Variable Note Payable
Variable Note Payable [Member]
Variable Note Payable
Provision for Refund
Provision For Refund [Member]
Provision For Refund
Transfers out of Level 3
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3
Equity Securities - Domestic
Domestic Equity Secutiries [Member]
Domestic Member.
Approved Carrying Charge
Approved Carrying Charge
Approved Carrying Charge on a Regulatory Asset
Interest Rate
Interest Rate On Long-Term Debt [Member]
Interest Rate Member.
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)
Gross Amounts Offset
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset
Wheeling Power Company
Wheeling Power Company [Member]
Wheeling Power Company
Storm-Related Costs
Storm Costs [Member]
Other Commitments [Table]
Other Commitments [Table]
COMPREHENSIVE INCOME
Comprehensive Income (Loss) Note [Text Block]
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member]
PTCs and ITCs
Effective Income Tax Rate Reconciliation, production and investment tax credits, 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 production and investment tax credits.
5.93% Note Payable
5.93% Note Payable [Member]
5.93% Note Payable
Transmission
Public Utilities, Property, Plant and Equipment, Transmission, Gross
Public Utilities, Property, Plant and Equipment, Transmission, Gross
Liabilities:
Liabilities, Fair Value Disclosure [Abstract]
Cash Flow Hedges, Net of Tax
Cash Flow Hedges, Net of Tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax
REVENUE FROM CONTRACTS WITH CUSTOMERS
Revenue from Contract with Customer [Text Block]
Document Fiscal Year Focus
Document Fiscal Year Focus
Total
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value
Requested net annual increase
Requested Net Annual Increase
The amount requested for net annual increase.
Maturity Period 2
Maturity Period 2 [Member]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
PROPERTY, PLANT AND EQUIPMENT
Property, Plant and Equipment, Gross [Abstract]
Total Assets
Assets, Fair Value Disclosure
Document Period End Date
Document Period End Date
Sale of Stock [Axis]
Sale of Stock [Axis]
Revolving Credit Facility, Due March 2027
Revolving Credit Facility, Due March 2027 [Member]
Revolving Credit Facility, Due March 2027
ARO Type [Domain]
ARO Type [Domain]
ARO Type
Insider Trading Arrangements [Line Items]
Pledged Accounts Receivable – AEP Credit
Transfers Accounted for as Secured Borrowings, Assets, Carrying Amount
Cost
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss
Reconciling Adjustments
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]
6.41% Note Payable
6.41% Note Payable [Member]
6.41% Note Payable
Redemption of Short-term Debt with Original Maturities Greater than 90 Days
Repayments of Short-Term Debt, Maturing in More than Three Months
Other Current Assets
Other Current Assets
Increase (Decrease) in Other Current Assets
ETT
ETT [Member]
ETT
Electric Generation, Transmission and Distribution
Electric Generation Transmission Distribution Revenues [Member]
Electric Generation, Transmission and Distribution Revenues.
Prepayments and Other Current Assets
Prepaid Expense and Other Assets, Current
Document Transition Report
Document Transition Report
Maximum Loans
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.
Entity Current Reporting Status
Entity Current Reporting Status
Retained Earnings
Retained Earnings [Member]
Requested rate increase related to depreciation rates
Public Utilities, Requested Rate Increase (Decrease), Amount Related To Depreciation Rates
Public Utilities, Requested Rate Increase (Decrease), Amount Related To Depreciation Rates
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Executive Category:
Executive Category [Axis]
Annual increase april 1st surcharge, proposed filing period
Annual Increase April 1st Surcharge, Proposed Filing Period
Annual Increase April 1st Surcharge, Proposed Filing Period
Purchases of Investment Securities
Purchases of Investments
Payments to Acquire Investments
Revolving Credit Facility, Due March 2029
Revolving Credit Facility, Due March 2029 [Member]
Revolving Credit Facility, Due March 2029
ENEC Under-Recovery Regulatory Assets (as of February 28, 2023)
Unrecovered ENEC Balance [Member]
Unrecovered ENEC Balance
Base Rate Period [Axis]
Base Rate Period [Axis]
Base Rate Period
Schedule of Maximum, Minimum and Average Interest Rates for Funds Borrowed from and Loaned to the Nonutility Money Pool
Schedule Of Maximum Minimum Average Interest Rates For Funds Borrowed From Loaned To Nonutility Money Pool [Table 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.
Statement of Income Location, Balance [Domain]
Statement of Income Location, Balance [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.
Letter of Credit
Letter of Credit [Member]
Company Selected Measure Name
Company Selected Measure Name