Financial Assets and Liabilities - Effects on Changes in Fair Values of Non-Designated Forward Contracts (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jul. 31, 2020 |
Jul. 31, 2019 |
Jul. 31, 2020 |
Jul. 31, 2019 |
|
| Financial Assets And Liabilities [Abstract] | ||||
| Gain (loss) recorded in other income (expense), net | $ 2,995 | $ 1,179 | $ 1,891 | $ 4,314 |