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Derivative Financial Instruments (Tables)
 12 Months Ended
Oct. 31, 2020
Investments, All Other Investments [Abstract]  
Outstanding Currency, Forward Exchange Contracts
The following table summarizes, by currency, the contracts outstanding at October 31, 2020 and 2019:
Notional Amounts
SellBuy
October 31, 2020 contract amounts:
Euro$127,849 $259,510 
Pound sterling36,943 71,380 
Japanese yen23,262 41,133 
Australian dollar179 9,084 
Hong Kong dollar59,459 81,199 
Singapore dollar1,102 17,350 
Others6,985 73,310 
Total$255,779 $552,966 
October 31, 2019 contract amounts:
Euro$264,661 $107,598 
Pound sterling32,600 48,867 
Japanese yen29,397 51,217 
Australian dollar168 7,767 
Hong Kong dollar189 135,862 
Singapore dollar1,108 15,684 
Others4,485 66,349 
Total$332,608 $433,344