LEASES - Cash Flow (Details) $ in Millions	3 Months Ended
	Jan. 31, 2020 USD ($)
Leases [Abstract]
Operating cash flows used for operating leases	$ 17.1
Financing cash flows used for finance leases	0.4
Leased assets obtained in exchange for new operating lease liabilities	28.7
Leased assets obtained in exchange for new finance lease liabilities	$ 0.0