Pension and Other Postretirement Plans - Other Postretirement Benefit Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Postretirement Benefit Plans, United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 225	$ 259	$ 675	$ 778
Interest cost	744	766	2,232	2,297
Amortization of prior service credit	(110)	(112)	(329)	(337)
Amortization of net actuarial (gain) loss	289	358	866	1,076
Total benefit cost	1,148	1,271	3,444	3,814
Postretirement Benefit Plans, International [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	7	22	22
Interest cost	9	9	27	28
Amortization of net actuarial (gain) loss		(3)		(10)
Total benefit cost	$ 16	$ 13	$ 49	$ 40