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Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands | Jan. 31, 2019 | Oct. 31, 2018
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross Assets | $ 1,396,735 | $ 1,395,571
Accumulated Amortization | 1,064,548 | 1,035,167
Net Assets | 332,187 | 360,404
Core/developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Assets | 773,147 | 773,147
Accumulated Amortization | 615,315 | 598,956
Net Assets | 157,832 | 174,191
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Assets | 358,644 | 358,524
Accumulated Amortization | 214,037 | 204,382
Net Assets | 144,607 | 154,142
Contract rights intangible |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Assets | 184,260 | 183,953
Accumulated Amortization | 178,614 | 177,191
Net Assets | 5,646 | 6,762
Trademarks and trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Assets | 42,928 | 42,929
Accumulated Amortization | 23,116 | 21,944
Net Assets | 19,812 | 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 | 36,556 | 35,818
Accumulated Amortization | 33,466 | 32,694
Net Assets | $ 3,090 | $ 3,124

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