LEASES - Schedule of Leases Recognized in Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2024	Sep. 30, 2023
Assets
Operating	$ 101.9	$ 110.8
Finance	61.0	66.2
Total lease assets	162.9	177.0
Current
Operating	31.3	26.9
Finance	9.4	8.6
Long-term
Operating	87.0	95.6
Finance	72.2	77.8
Total lease liabilities	$ 199.9	$ 208.9
Operating Lease, Liability, Current, Statement of Financial Position	Other current liabilities	Other current liabilities
Finance Lease, Liability, Current, Statement of Financial Position	Current portion of long-term debt	Current portion of long-term debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position	Long-term debt, net of current portion	Long-term debt, net of current portion