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Business Combinations - Schedule of Acquisition Purchase Price (Details) - USD ($) $ in Thousands |  | 6 Months Ended |
--- | --- | --- | ---
Dec. 11, 2017 | Apr. 30, 2018 | Oct. 31, 2017
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 3,147,124 | $ 2,706,974
Black Duck Software |  |  |
Business Acquisition [Line Items] |  |  |
Cash paid |  | 563,500 |
Fair value of assumed equity awards allocated to purchase consideration |  | 1,588 |
Total consideration | $ 565,100 | 565,088 |
Goodwill |  | 396,346 |
Identifiable intangibles assets acquired |  | 178,000 |
Cash, cash equivalents and short-term investments |  | 19,491 |
Other tangible liabilities acquired, net |  | (13,249) |
Deferred revenue |  | (15,500) |
Total purchase allocation |  | $ 565,088 |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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