Goodwill and Intangible Assets - Amortization Expense Related to Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Jul. 31, 2021		Jul. 31, 2020		Jul. 31, 2021	Jul. 31, 2020
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	$ 21,450		$ 24,596		$ 63,557	$ 73,059
Core/developed technology
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	11,431		12,472		33,416	37,515
Customer relationships
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	7,960		8,971		23,443	26,444
Contract rights intangible
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	439		1,272		1,748	3,829
Trademarks and trade names
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	610		934		1,830	2,489
Capitalized software development costs
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	$ 1,010	[1]	$ 947	[1]	$ 3,120	$ 2,782

[1] Amortization of capitalized software development costs is included in cost of products revenue in the unaudited condensed consolidated statements of operations.