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Financial Assets and Liabilities - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Oct. 31, 2017
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 686,780	$ 723,115
Total cash, cash equivalents and restricted cash	688,681	725,001	$ 743,165	$ 1,050,075
Restricted cash included in Prepaid expenses and other current assets
Cash and Cash Equivalents [Line Items]
Restricted cash	1,171	1,164
Restricted cash included in Other long-term assets
Cash and Cash Equivalents [Line Items]
Restricted cash	$ 730	$ 722

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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