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Derivative financial instruments - Summary of Fair Values Of Net Investment Contracts (Details) | Apr. 30, 2024 USD ($)
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Prepaid expenses and other current assets |
Investments, All Other Investments [Abstract] |
Net investment contracts | $ 7,683,000
Derivative [Line Items] |
Net investment contracts | 7,683,000
Other assets |
Investments, All Other Investments [Abstract] |
Net investment contracts | 1,465,000
Derivative [Line Items] |
Net investment contracts | 1,465,000
Accrued liabilities |
Investments, All Other Investments [Abstract] |
Net investment contracts | 3,632,000
Derivative [Line Items] |
Net investment contracts | 3,632,000
Other long-term liabilities |
Investments, All Other Investments [Abstract] |
Net investment contracts | 7,612,000
Derivative [Line Items] |
Net investment contracts | $ 7,612,000

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