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Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Oct. 31, 2019	Oct. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Assets	$ 1,418,818	$ 1,395,571
Accumulated Amortization	1,139,444	1,035,167
Net Assets	279,374	360,404
Core/developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Assets	791,647	773,147
Accumulated Amortization	655,119	598,956
Net Assets	136,528	174,191
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Assets	358,661	358,524
Accumulated Amortization	242,058	204,382
Net Assets	116,603	154,142
Contract rights intangible
Finite-Lived Intangible Assets [Line Items]
Gross Assets	184,304	183,953
Accumulated Amortization	181,124	177,191
Net Assets	3,180	6,762
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Assets	42,929	42,929
Accumulated Amortization	25,581	21,944
Net Assets	17,348	20,985
In-process research and development (IPR&D)
Finite-Lived Intangible Assets [Line Items]
Gross Assets	1,200	1,200
Accumulated Amortization	0	0
Net Assets	1,200	1,200
Capitalized software development costs
Finite-Lived Intangible Assets [Line Items]
Gross Assets	40,077	35,818
Accumulated Amortization	35,562	32,694
Net Assets	$ 4,515	$ 3,124

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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