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Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands | Apr. 30, 2019 | Oct. 31, 2018
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross Assets | $ 1,397,054 | $ 1,395,571
Accumulated Amortization | 1,090,127 | 1,035,167
Net Assets | 306,927 | 360,404
Core/developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Assets | 773,147 | 773,147
Accumulated Amortization | 629,360 | 598,956
Net Assets | 143,787 | 174,191
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Assets | 358,522 | 358,524
Accumulated Amortization | 223,374 | 204,382
Net Assets | 135,148 | 154,142
Contract rights intangible |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Assets | 183,947 | 183,953
Accumulated Amortization | 179,167 | 177,191
Net Assets | 4,780 | 6,762
Trademarks and trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Assets | 42,929 | 42,929
Accumulated Amortization | 24,025 | 21,944
Net Assets | 18,904 | 20,985
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 | 37,309 | 35,818
Accumulated Amortization | 34,201 | 32,694
Net Assets | $ 3,108 | $ 3,124

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