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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, 2023
Jul. 31, 2022
Jul. 31, 2023
Jul. 31, 2022
Pension Plans | International        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 281 $ 423 $ 838 $ 1,343
Interest cost 642 272 1,887 861
Expected return on plan assets (392) (347) (1,151) (1,109)
Amortization of prior service cost (credit) (13) (13) (38) (43)
Amortization of net actuarial (gain) loss 20 558 61 1,758
Total benefit cost 538 893 1,597 2,810
Settlement loss     0 0
Pension Plans | United States        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 2,744 3,423 8,233 13,338
Interest cost 4,176 3,322 12,526 11,146
Expected return on plan assets (6,529) (5,692) (19,587) (22,082)
Amortization of prior service cost (credit) 0 12 0 36
Amortization of net actuarial (gain) loss 0 1,197 0 6,282
Total benefit cost 391 2,262 1,172 49,941
Settlement loss     0 (41,221)
Postretirement Benefit Costs | International        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 1 3 4 9
Interest cost 3 3 8 10
Amortization of net actuarial (gain) loss (16) (12) (47) (37)
Total benefit cost (12) (6) (35) (18)
Postretirement Benefit Costs | United States        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 100 172 299 515
Interest cost 766 481 2,297 1,443
Amortization of net actuarial (gain) loss 0 244 0 733
Total benefit cost $ 866 $ 897 $ 2,596 $ 2,691