FINANCING ACTIVITIES - Schedule of Maximum Minimum and Average Interest Rates for Funds Borrowed from and Loaned to AEP (Details) - Direct Borrowing - AEP TRANSMISSION COMPANY, LLC	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Short-Term Debt [Line Items]
Maximum Interest Rate for Funds Borrowed	5.79%	5.81%	5.28%
Minimum Interest Rate For Funds Borrowed	4.66%	4.53%	0.46%
Maximum Interest Rate for Funds Loaned	5.79%	5.81%	5.28%
Minimum Interest Rate for Funds Loaned	4.66%	4.53%	0.46%
Average Interest Rate for Funds Borrowed	5.53%	5.56%	2.08%
Average Interest Rate for Funds Loaned	5.56%	5.51%	2.07%