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v3.25.3

FINANCING ACTIVITIES - Issuances of Debt (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2025 USD ($)
Debt Instrument [Line Items] |
Total Issuances | $ 6,300.0
Junior Subordinated Notes | 5.08% Junior Subordinate Notes |
Debt Instrument [Line Items] |
Total Issuances | $ 1,100.0
Interest Rate | 5.80%
Junior Subordinated Notes | 6.05% Junior Subordinated Notes |
Debt Instrument [Line Items] |
Total Issuances | $ 900.0
Interest Rate | 6.05%
Other Long-term Debt | AEP Texas |
Debt Instrument [Line Items] |
Total Issuances | $ 400.0
Other Long-term Debt | AEPTCo |
Debt Instrument [Line Items] |
Total Issuances | 141.0
Other Long-term Debt | APCo |
Debt Instrument [Line Items] |
Total Issuances | 425.0
Other Long-term Debt | KPCo |
Debt Instrument [Line Items] |
Total Issuances | 150.0
Other Long-term Debt | Transource Energy |
Debt Instrument [Line Items] |
Total Issuances | 36.6
Other Long-term Debt | WPCo |
Debt Instrument [Line Items] |
Total Issuances | 125.0
Senior Unsecured Notes | AEP Texas | 5.70% Senior Unsecured Notes |
Debt Instrument [Line Items] |
Total Issuances | $ 150.0
Interest Rate | 5.70%
Senior Unsecured Notes | AEP Texas | 5.87% Senior Unsecured Notes |
Debt Instrument [Line Items] |
Total Issuances | $ 750.0
Interest Rate | 5.85%
Senior Unsecured Notes | AEPTCo |
Debt Instrument [Line Items] |
Total Issuances | $ 425.0
Interest Rate | 5.38%
Senior Unsecured Notes | PSO |
Debt Instrument [Line Items] |
Total Issuances | $ 800.0
Interest Rate | 5.45%
Pollution Control Bonds | APCo | 3.70% Pollution Control Bonds |
Debt Instrument [Line Items] |
Total Issuances | $ 104.4
Interest Rate | 3.70%
Pollution Control Bonds | APCo | 3.30% Pollution Control Bonds |
Debt Instrument [Line Items] |
Total Issuances | $ 65.3
Interest Rate | 3.30%
Pollution Control Bonds | I&M |
Debt Instrument [Line Items] |
Total Issuances | $ 150.0
Interest Rate | 3.70%
Notes Payable | I&M |
Debt Instrument [Line Items] |
Total Issuances | $ 100.0
Interest Rate | 4.89%
Securitization Bonds | KPCo |
Debt Instrument [Line Items] |
Total Issuances | $ 477.7
Interest Rate | 5.30%

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