v3.26.1
Stock-based Compensation - Additional Information (Detail)
$ / shares in Units, $ in Millions
6 Months Ended
Jul. 31, 2026
USD ($)
$ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Accrued stock-based compensation expense liabilities $ 2.5
Total unrecognized compensation cost of unvested awards $ 174.1
Weighted average recognition period 2 years 6 months
Closing price of ordinary shares | $ / shares $ 86
Restricted stock units [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Aggregate intrinsic value of unvested restricted stock units $ 246.3