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INCOME TAXES - Tax Credit Carryforwards (Details) $ in Millions | Dec. 31, 2024 USD ($)
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Federal |
Effective Income Tax Rate Reconciliation [Line Items] |
Tax credit carryforward | $ 197.9
Federal | INDIANA MICHIGAN POWER COMPANY |
Effective Income Tax Rate Reconciliation [Line Items] |
Tax credit carryforward | 37.5
Federal | PUBLIC SERVICE COMPANY OF OKLAHOMA |
Effective Income Tax Rate Reconciliation [Line Items] |
Tax credit carryforward | 26.5
Federal | SOUTHWESTERN ELECTRIC POWER COMPANY |
Effective Income Tax Rate Reconciliation [Line Items] |
Tax credit carryforward | 31.7
State and Local Government |
Effective Income Tax Rate Reconciliation [Line Items] |
Tax credit carryforward | 40.2
State and Local Government | INDIANA MICHIGAN POWER COMPANY |
Effective Income Tax Rate Reconciliation [Line Items] |
Tax credit carryforward | 0.0
State and Local Government | PUBLIC SERVICE COMPANY OF OKLAHOMA |
Effective Income Tax Rate Reconciliation [Line Items] |
Tax credit carryforward | 40.2
State and Local Government | SOUTHWESTERN ELECTRIC POWER COMPANY |
Effective Income Tax Rate Reconciliation [Line Items] |
Tax credit carryforward | $ 0.0

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