FINANCING ACTIVITIES - Schedule of Maximum Minimum and Average Interest Rates for Funds Borrowed from and Loaned to AEP (Details) - Direct Borrowing - AEPTCo	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Short-Term Debt [Line Items]
Maximum Interest Rate for Funds Borrowed	4.76%	5.79%	5.81%
Minimum Interest Rate For Funds Borrowed	3.89%	4.66%	4.53%
Maximum Interest Rate for Funds Loaned	4.76%	5.79%	5.81%
Minimum Interest Rate for Funds Loaned	3.89%	4.66%	4.53%
Average Interest Rate for Funds Borrowed	4.55%	5.53%	5.56%
Average Interest Rate for Funds Loaned	4.43%	5.56%	5.51%