Goodwill and Intangible Assets - Amortization Expense Related to Intangible Assets (Detail) - USD ($) $ in Thousands		12 Months Ended
		Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense		$ 95,004	$ 103,782	$ 129,263
Core/developed technology
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense		47,890	56,163	78,820
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense		35,075	37,533	37,395
Contract rights intangible
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense		5,181	3,581	4,906
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense		3,135	3,637	4,543
Capitalized software development costs
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense	[1]	$ 3,723	$ 2,868	$ 3,599

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