Operating Leases and Service Commitment - Other lease information (Details) - USD ($) $ in Thousands		9 Months Ended
	Nov. 01, 2019	Jul. 31, 2020
Leases [Abstract]
Cash outflows for operating leases included in the measurement of lease liabilities during the nine months ended July 31, 2020 (in thousands)		$ 12,173
Non-cash amount of right of use assets and lease liabilities recorded upon adoption	$ 54,665
Weighted-average remaining lease term as of July 31, 2020 (years)		3 years 10 months 24 days
Weighted-average discount rate as of July 31, 2020		2.46%