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Derivative financial instruments - Summary of Fair Values Of Net Investment Contracts (Details) | Apr. 30, 2025 USD ($)
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Prepaid expenses and other current assets |
Derivative [Line Items] |
Net investment contracts | $ 5,132,000
Other assets |
Derivative [Line Items] |
Net investment contracts | 0
Accrued liabilities |
Derivative [Line Items] |
Net investment contracts | 3,865,000
Other long-term liabilities |
Derivative [Line Items] |
Net investment contracts | $ 51,916,000

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