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Goodwill and Intangible Assets - Changes of Goodwill (Details)
$ in Thousands
9 Months Ended
Jul. 31, 2020
USD ($)
Goodwill [Roll Forward]  
Goodwill $ 3,171,179 [1]
Additions 173,341
Effect of foreign currency translation 11,887
Goodwill $ 3,356,407
[1]
Derived from audited financial statements.