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Derivative financial instruments - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2024 | Apr. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |  |  |
Maturity of foreign currency forward contracts |  |  | 90 days |
Gains (losses) on foreign currency forward contracts | $ (6,423) | $ (3,960) | $ 5,671 | $ 12,719
Change in unrealized gain (loss) on foreign currency derivative instruments | $ 5,298 | $ 1,792 | $ (7,618) | $ (18,918)

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- Definition Change In Unrealized Gain (Loss) On Foreign Currency, Derivative Instruments Not Designated as Hedging Instruments + References No definition available. + Details
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- Definition Foreign currency forward contracts maturity period maximum. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A + Details
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