Liabilities and Restructuring Charges - Components of Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Payables and Accruals [Abstract]
Payroll and related benefits	$ 212,292	$ 382,773
Other accrued liabilities	94,976	97,119
Accounts payable	42,097	19,954
Total	$ 349,365	$ 499,846