Leases - Components Of Lease Expense (Details) - USD ($) $ in Thousands		3 Months Ended
		Jan. 31, 2021	Jan. 31, 2020
Leases [Abstract]
Operating lease expense	[1]	$ 23,626	$ 23,201
Variable lease expense	[2]	1,335	942
Total lease expense		$ 24,961	$ 24,143

[1] Operating lease expense includes immaterial amounts of short-term leases, net of sublease income.

[2] Variable lease expense includes payments to lessors that are not fixed or determinable at lease commencement date. These payments primarily consist of maintenance, property taxes, insurance and variable indexed based payments.