Liabilities and Restructuring Charges - Components of Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Oct. 31, 2015
Payables and Accruals [Abstract]
Payroll and related benefits	$ 198,378	$ 315,078
Other accrued liabilities	56,729	60,545
Accounts payable	30,089	9,919
Total	$ 285,196	$ 385,542	[1]

[1] Derived from audited financial statements.