Pension and Other Postretirement Plans - Other Postretirement Benefit Cost (Detail) - Postretirement Benefit Costs [Member] - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 190	$ 165
Interest cost	614	749
Amortization of prior service credit	(4)	(6)
Amortization of net actuarial (gain) loss	419	152
Total benefit cost	1,219	1,060
International [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	4
Interest cost	3	5
Amortization of net actuarial (gain) loss	(9)	(7)
Total benefit cost	$ (2)	$ 2