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Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands | Apr. 30, 2020 | Oct. 31, 2019
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Assets | $ 1,466,960 | $ 1,418,818 |
Accumulated Amortization | 1,187,649 | 1,139,444 |
Net Assets | 279,311 | 279,374 | [1]
Core/developed technology |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Assets | 817,173 | 791,647 |
Accumulated Amortization | 680,161 | 655,119 |
Net Assets | 137,012 | 136,528 |
Customer relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Assets | 376,734 | 358,661 |
Accumulated Amortization | 259,621 | 242,058 |
Net Assets | 117,113 | 116,603 |
Contract rights intangible |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Assets | 186,717 | 184,304 |
Accumulated Amortization | 183,334 | 181,124 |
Net Assets | 3,383 | 3,180 |
Trademarks and trade names |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Assets | 42,929 | 42,929 |
Accumulated Amortization | 27,136 | 25,581 |
Net Assets | 15,793 | 17,348 |
In Process Research and Development |  |  |
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 | 42,207 | 40,077 |
Accumulated Amortization | 37,397 | 35,562 |
Net Assets | $ 4,810 | $ 4,515 |
[1] | Derived from audited financial statements.

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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