LEASES - Cash Flow (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jul. 31, 2020	Jul. 31, 2020
Leases [Abstract]
Operating cash flows used for operating leases	$ 16.9	$ 52.2
Financing cash flows used for finance leases	0.3	1.0
Leased assets obtained in exchange for new operating lease liabilities	0.8	63.9
Leased assets obtained in exchange for new finance lease liabilities	$ 0.1	$ 0.4