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Business Combination - Schedule of Acquisition Purchase Price (Details) - USD ($) $ in Thousands |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 11, 2017 | Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2016
Business Acquisition [Line Items] |  |  |  |
Goodwill |  | $ 3,143,249 | $ 2,706,974 | $ 2,518,245
Black Duck Software |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash paid |  | 563,500 |  |
Fair value of assumed equity awards allocated to purchase consideration |  | 1,588 |  |
Total purchase consideration | $ 565,100 | 565,088 |  |
Goodwill |  | 395,395 |  |
Identifiable intangibles assets acquired |  | 178,000 |  |
Cash, cash equivalents and short-term investments |  | 19,491 |  |
Other tangible liabilities acquired, net |  | (12,298) |  |
Deferred revenue |  | (15,500) |  |
Total purchase allocation |  | $ 565,088 |  |

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