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Summary of Significant Accounting Policies - Components of Accounts Payable and Accrued Liabilities (Detail) - USD ($)
$ in Thousands
Oct. 31, 2015
Oct. 31, 2014
Accounts payable and accrued liabilities Current    
Payroll and related benefits $ 315,078 $ 302,295
Other accrued liabilities 60,545 66,666
Accounts payable 9,919 28,152
Total $ 385,542 $ 397,113