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Pension and other postretirement plans (Tables)
 3 Months Ended
Jan. 31, 2024
Retirement Benefits [Abstract]  
Components of Net Periodic Benefits Cost
The components of net periodic pension and other postretirement cost for the three months ended January 31, 2024 and 2023 were:
 U.S.International
Three Months Ended2024202320242023
Service cost$2,507 $2,744 $237 $275 
Interest cost4,752 4,175 689 603 
Expected return on plan assets(6,652)(6,529)(417)(377)
Amortization of prior service credit— — (2)(13)
Amortization of net actuarial loss— — 9 20 
Total benefit cost$607 $390 $516 $508 
The components of other postretirement benefit costs for the three months ended January 31, 2024 and 2023 were:
 U.S.International
Three Months Ended2024202320242023
Service cost$70 $100 $1 $1 
Interest cost754 765 3 3 
Amortization of net actuarial gain(147)— (14)(16)
Total benefit cost (income)$677 $865 $(10)$(12)