XML 66 R54.htm IDEA: XBRL DOCUMENT v3.20.4
Financial Assets and Liabilities - Notional Amounts of Derivative Instruments (Detail) - USD ($)
$ in Thousands
Jan. 31, 2021
Oct. 31, 2020
Financial Assets And Liabilities [Abstract]    
Total gross notional amount $ 865,642 $ 981,234
Net fair value $ 6,047 $ 6,940