Goodwill and Intangible Assets - Amortization Expense Related to Intangible Assets (Detail) - USD ($) $ in Thousands		3 Months Ended
		Jan. 31, 2021	Jan. 31, 2020
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets		$ 21,314	$ 23,434
Core/developed technology
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets		11,016	12,318
Customer relationships
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets		7,780	8,562
Contract rights intangible
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets		870	875
Trademarks and trade names
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets		610	778
Capitalized software development costs
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization expense of intangible assets	[1]	$ 1,038	$ 901

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