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Pension and other postretirement plans - Net Periodic Benefit Cost (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jul. 31, 2022
Jul. 31, 2021
Jul. 31, 2022
Jul. 31, 2021
Pension Plans | United States        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 3,423 $ 5,511 $ 13,338 $ 16,999
Interest cost 3,322 3,414 11,146 10,248
Expected return on plan assets (5,692) (7,124) (22,082) (21,212)
Amortization of prior service cost (credit) 12 (7) 36 (48)
Amortization of net actuarial (gain) loss 1,197 3,643 6,282 11,259
Settlement loss 0 303 41,221 2,321
Total benefit cost 2,262 5,740 49,941 19,567
Pension Plans | International        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 423 462 1,343 1,642
Interest cost 272 201 861 671
Expected return on plan assets (347) (395) (1,109) (1,217)
Amortization of prior service cost (credit) (13) (81) (43) (246)
Amortization of net actuarial (gain) loss 558 572 1,758 2,373
Settlement loss 0 0 0 0
Total benefit cost 893 759 2,810 3,223
Postretirement Benefit Costs | United States        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 172 191 515 584
Interest cost 481 444 1,443 1,354
Amortization of net actuarial (gain) loss 244 334 733 1,019
Total benefit cost 897 969 2,691 2,957
Postretirement Benefit Costs | International        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 3 4 9 11
Interest cost 3 3 10 9
Amortization of net actuarial (gain) loss (12) (11) (37) (30)
Total benefit cost $ (6) $ (4) $ (18) $ (10)