LEASES - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2020	Sep. 30, 2019
Lessor, Lease, Description [Line Items]
Capitalized build-to-suit assets		$ 90.3
Minimum
Lessor, Lease, Description [Line Items]
Finance lease, contract term	1 month
Lessee, operating lease, contract term	1 month
Operating lease, contract term	1 month
Maximum
Lessor, Lease, Description [Line Items]
Finance lease, contract term	50 years
Lessee, operating lease, contract term	50 years
Operating lease, contract term	21 years