Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jul. 31, 2020	Jul. 31, 2020
Lessee, Lease, Description [Line Items]
Lease, Cost	$ 22.3	$ 75.9
Operating lease, cost	21.0	72.2
Finance lease, cost	$ 1.3	$ 3.7
Minimum
Lessee, Lease, Description [Line Items]
Lease term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease term		30 years