Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Oct. 31, 2021	Oct. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Assets	$ 1,598,984	$ 1,489,314
Accumulated Amortization	1,319,852	1,234,992
Net Assets	279,132	254,322
Core/developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Assets	911,903	827,232
Accumulated Amortization	748,759	703,009
Net Assets	163,144	124,223
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Assets	404,571	380,838
Accumulated Amortization	308,355	277,219
Net Assets	96,216	103,619
Contract rights intangible
Finite-Lived Intangible Assets [Line Items]
Gross Assets	193,317	192,812
Accumulated Amortization	188,231	186,763
Net Assets	5,086	6,049
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Assets	43,095	43,096
Accumulated Amortization	31,155	28,716
Net Assets	11,940	14,380
In-process research and development (IPR&D)
Finite-Lived Intangible Assets [Line Items]
Gross Assets		1,214
Accumulated Amortization		0
Net Assets		1,214
Capitalized software development costs
Finite-Lived Intangible Assets [Line Items]
Gross Assets	46,098	44,122
Accumulated Amortization	43,352	39,285
Net Assets	$ 2,746	$ 4,837