Leases - Narrative (Details) $ in Millions	3 Months Ended
	Jan. 31, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Lease, Cost	$ 27.8
Operating lease, cost	26.6
Finance lease, cost	$ 1.2
Minimum
Lessee, Lease, Description [Line Items]
Lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease term	30 years