LEASES - (Supplemental Cash Flow Information and Non-Cash Activity Schedule) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Lease, Cost [Abstract]
Operating cash flows from operating leases, net	$ 83.9	$ 66.9
Operating cash flows from finance leases	1.2	1.4
Financing cash flows from finance leases	5.9	5.3
Right-of-use assets obtained in exchange for lease obligations, operating leases	71.9	200.0
Right-of-use assets obtained in exchange for lease obligations, finance leases	$ 1.5	$ 2.6