LEASES - Master Lease Agreements (Details) $ in Millions	Dec. 31, 2024 USD ($)
Lessee, Lease, Description [Line Items]
Maximum Potential Loss	$ 41.3
AEP TEXAS INC.
Lessee, Lease, Description [Line Items]
Maximum Potential Loss	9.4
APPALACHIAN POWER COMPANY
Lessee, Lease, Description [Line Items]
Maximum Potential Loss	5.4
INDIANA MICHIGAN POWER COMPANY
Lessee, Lease, Description [Line Items]
Maximum Potential Loss	3.9
OHIO POWER COMPANY
Lessee, Lease, Description [Line Items]
Maximum Potential Loss	6.8
PUBLIC SERVICE COMPANY OF OKLAHOMA
Lessee, Lease, Description [Line Items]
Maximum Potential Loss	3.9
SOUTHWESTERN ELECTRIC POWER COMPANY
Lessee, Lease, Description [Line Items]
Maximum Potential Loss	$ 4.7