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Stock-based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions | 6 Months Ended
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Jul. 31, 2024 USD ($) $ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Accrued stock-based compensation expense liabilities | $ 3.2
Closing price of ordinary shares | $ / shares | $ 52.64
Stock options [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Total unrecognized compensation cost, stock options | $ 4.1
Weighted average recognition period | 9 months 21 days
Restricted stock units [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Total unrecognized compensation cost, restricted stock units | $ 157.7
Weighted average recognition period | 2 years 3 months 3 days
Aggregate intrinsic value of unvested restricted stock units | $ 124.4

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