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Derivative financial instruments (Tables)
 9 Months Ended
Jul. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Outstanding Currency, Forward Exchange Contracts
The following table summarizes, by currency, the foreign currency forward contracts outstanding at July 31, 2022 and 2021:
 Notional Amounts
July 31, 2022 contract amounts:SellBuy
Euro$88,275 $333,285 
British pound36,779 78,942 
Japanese yen16,688 37,163 
Australian dollar278 9,426 
Hong Kong dollar— 67,341 
Singapore dollar378 18,025 
Others26,012 98,113 
Total$168,410 $642,295 
 Notional Amounts
July 31, 2021 contract amounts:SellBuy
Euro$118,988 $337,817 
British pound27,861 86,778 
Japanese yen15,939 43,281 
Australian dollar934 10,462 
Hong Kong dollar283 37,556 
Singapore dollar458 18,448 
Others22,374 93,079 
Total$186,837 $627,421