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Liabilities - Components of Accounts Payable and Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2014
Oct. 31, 2013
Payables and Accruals [Abstract]    
Payroll and related benefits $ 258,835 $ 302,374
Other accrued liabilities 45,577 47,248
Accounts payable 14,624 8,575
Total $ 319,036 $ 358,197 [1]
[1] Derived from audited financial statements.