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Fair value measurements - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Additional Information) (Detail) $ in Thousands | 9 Months Ended
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Jul. 31, 2025 USD ($)
Fair Value Disclosures [Abstract] |
Notional Amounts of foreign currency derivative contracts | $ 855,821
Executive officers and other highly compensated employees salary and annual cash incentive compensation deferrals percentage, maximum | 100.00%
Executive officers share-based long-term incentive compensation deferrals percentage, maximum | 90.00%

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