Liabilities and Restructuring Charges - Components of Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Thousands	Jul. 31, 2015	Oct. 31, 2014
Payables and Accruals [Abstract]
Payroll and related benefits	$ 257,342	$ 302,295
Other accrued liabilities	54,793	66,666
Accounts payable	18,690	28,152
Total	$ 330,825	$ 397,113	[1]

[1] Derived from audited financial statements.