Severance and Restructuring Costs - Schedule of Severance and Restructuring Activity (Detail) $ in Thousands	9 Months Ended
	Jul. 31, 2016 USD ($)
Restructuring Cost And Reserve [Line Items]
Accrual Beginning balance	$ 9,474
Charged to expense	4,364
Cash payments	(11,502)
Non cash utilization	(205)
Accrual Ending balance	2,131
Fixed Asset Impairment Charges [Member]
Restructuring Cost And Reserve [Line Items]
Charged to expense	205
Non cash utilization	(205)
Employee Severance Charges [Member]
Restructuring Cost And Reserve [Line Items]
Accrual Beginning balance	7,908
Charged to expense	2,828
Cash payments	(9,090)
Accrual Ending balance	1,646
Lease Termination Charges [Member]
Restructuring Cost And Reserve [Line Items]
Accrual Beginning balance	1,322
Charged to expense	61
Cash payments	(1,226)
Accrual Ending balance	157
Other One-time Costs [Member]
Restructuring Cost And Reserve [Line Items]
Accrual Beginning balance	244
Charged to expense	1,270
Cash payments	(1,186)
Accrual Ending balance	$ 328