LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 33,492	$ 32,882
Financing cash flows from finance leases	2,824	3,202
Total	$ 36,316	$ 36,084