Pension and Other Postretirement Plans - Net Periodic Benefit Cost (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Pension Plan, United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3,031	$ 1,874	$ 5,431	$ 4,036
Interest cost	3,841	3,545	7,523	6,960
Expected return on plan assets	(4,578)	(4,487)	(9,158)	(8,648)
Amortization of prior service cost (credit)	30	59	60	118
Amortization of net actuarial loss	2,633	1,784	4,886	3,970
Total benefit cost	4,957	2,775	8,742	6,436
Pension Plan, International [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	692	714	1,433	1,412
Interest cost	627	817	1,299	1,608
Expected return on plan assets	(395)	(448)	(812)	(880)
Amortization of prior service cost (credit)	(22)	(20)	(46)	(39)
Amortization of net actuarial loss	485	399	1,309	787
Settlement loss			1,275
Total benefit cost	$ 1,387	$ 1,462	$ 4,458	$ 2,888