Leases - Components Of Lease Expense (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Leases [Abstract]
Operating lease expense	[1]	$ 23,843	$ 23,450	$ 70,818	$ 69,932
Variable lease expense	[2]	2,184	1,447	5,361	3,439
Total lease expense		$ 26,027	$ 24,897	$ 76,179	$ 73,371

[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.