Goodwill and Intangible Assets - Changes of Goodwill (Details) $ in Thousands	3 Months Ended
	Jan. 31, 2020 USD ($)
Goodwill [Roll Forward]
Goodwill	$ 3,171,179	[1]
Additions	56,197
Effect of foreign currency translation	4,216
Goodwill	$ 3,231,592

[1] Derived from audited financial statements.