FINANCING ACTIVITIES - Schedule of Maximum, Minimum and Average Interest Rates for Funds Borrowed from and Loaned to the Nonutility Money Pool (Details) - Nonutility |
6 Months Ended | |
|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| AEP Texas | ||
| Short-Term Debt [Line Items] | ||
| Maximum Interest Rate for Funds Loaned | 4.76% | 5.79% |
| Minimum Interest Rate for Funds Loaned | 4.64% | 5.56% |
| Average Interest Rate for Funds Loaned | 4.70% | 5.69% |
| SWEPCo | ||
| Short-Term Debt [Line Items] | ||
| Maximum Interest Rate for Funds Loaned | 4.76% | 5.79% |
| Minimum Interest Rate for Funds Loaned | 4.64% | 5.56% |
| Average Interest Rate for Funds Loaned | 4.70% | 5.68% |