RECEIVABLES - Schedule of Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 7.7	$ 7.3	$ 6.7
Charged to Profit & Loss	2.6	5.0	4.2
Deductions	(2.2)	(1.4)	(4.9)
Other Adjustments	0.0	(3.2)	1.3
Ending Balance	$ 8.1	$ 7.7	$ 7.3