Financial Assets and Liabilities - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Oct. 31, 2020	Jan. 31, 2020	Oct. 31, 2019
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 1,023,074	$ 1,235,653
Total cash, cash equivalents and restricted cash	1,025,405	1,237,970	$ 702,282	$ 730,527
Restricted cash included in Prepaid expenses and other current assets
Cash and Cash Equivalents [Line Items]
Restricted cash	1,523	1,523
Restricted cash included in Other long-term assets
Cash and Cash Equivalents [Line Items]
Restricted cash	$ 808	$ 794