Goodwill and Intangible Assets - Summary of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
Oct. 31, 2021	Oct. 31, 2020
Goodwill [Roll Forward]
Beginning Balance	$ 3,365,114	$ 3,171,179
Additions	204,469	173,732
Adjustments		59
Effect of foreign currency translation	6,202	20,144
Ending balance	3,575,785	3,365,114
Semiconductor And System Design
Goodwill [Roll Forward]
Beginning Balance	2,939,512	2,758,926
Additions	158,760	160,447
Adjustments		59
Effect of foreign currency translation	6,202	20,080
Ending balance	3,104,474	2,939,512
Software Integrity
Goodwill [Roll Forward]
Beginning Balance	425,602	412,253
Additions	45,709	13,285
Adjustments		0
Effect of foreign currency translation	0	64
Ending balance	$ 471,311	$ 425,602

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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