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Derivative Financial Instruments (Tables)
9 Months Ended
Jul. 31, 2021
Investments, All Other Investments [Abstract]  
Outstanding Currency, Forward Exchange Contracts
The following table summarizes, by currency, the foreign currency forward contracts outstanding at July 31, 2021 and 2020:
 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 
 Notional Amounts
July 31, 2020 contract amounts:SellBuy
Euro$108,856 $207,198 
British pound18,861 60,397 
Japanese yen15,815 32,009 
Australian dollar174 7,682 
Hong Kong dollar56,279 74,714 
Singapore dollar1,357 15,982 
Others4,412 59,921 
Total$205,754 $457,903