Pension and Other Postretirement Plans - Net Periodic Benefit Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Pension Plans | United States
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 5,722	$ 5,235	$ 11,488	$ 10,293
Interest cost	3,494	4,026	6,834	7,943
Expected return on plan assets	(7,335)	(6,175)	(14,088)	(12,334)
Amortization of prior service credit	(21)	(22)	(41)	(42)
Amortization of net actuarial (gain) loss	4,042	3,622	7,616	7,019
Settlement loss	2,018	0	2,018	0
Total benefit cost	7,920	6,686	13,827	12,879
Pension Plans | International
Defined Benefit Plan Disclosure [Line Items]
Service cost	662	459	1,180	1,030
Interest cost	250	251	470	514
Expected return on plan assets	(431)	(304)	(822)	(635)
Amortization of prior service credit	(88)	(68)	(165)	(142)
Amortization of net actuarial (gain) loss	1,011	729	1,801	1,462
Settlement loss	0	0	0	0
Total benefit cost	1,404	1,067	2,464	2,229
Postretirement Benefit Costs | United States
Defined Benefit Plan Disclosure [Line Items]
Service cost	216	143	392	333
Interest cost	456	558	910	1,173
Amortization of prior service credit	0	(4)	0	(8)
Amortization of net actuarial (gain) loss	338	258	685	677
Total benefit cost	1,010	955	1,987	2,175
Postretirement Benefit Costs | International
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	4	7	7
Interest cost	3	3	6	7
Amortization of prior service credit	0	0	0	0
Amortization of net actuarial (gain) loss	(10)	(9)	(20)	(18)
Total benefit cost	$ (4)	$ (2)	$ (7)	$ (4)