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Stock-Based Compensation Plans - Summary of Restricted Share Units Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
 6 Months Ended 12 Months Ended
Jul. 31, 2023
Jan. 31, 2023
Stock-Based Compensation Plans    
Vested or expected to vest, weighted-average exercise price (in dollars per share) $ 51.83  
Vested or expected to vest, weighted-average remaining contractual life (Year) 4 years 3 months 18 days  
Vested or expected to vest, aggregate intrinsic value $ 41.9  
Restricted Stock Units (RSUs) [Member]    
Stock-Based Compensation Plans    
Number of Units Outstanding (in shares), Beginning 474,631  
Weighted-Average Granted Date Fair Value (in dollars per share), Beginning $ 32.44  
Weighted-Average Remaining Contractual (years) 5 years 3 months 18 days 4 years 8 months 12 days
Aggregate Intrinsic Value $ 36.9 $ 35.2
RSUs Granted (in shares) 61,774  
RSUs Granted, weighted-average granted date fair value (in dollars per share) $ 80.19  
Exercised (in shares) (53,898)  
Exercised, weighted-average granted date fair value (in dollars per share) $ 8.55  
Forfeited (in shares) (413)  
Forfeited, weighted-average granted date fair value (in dollars per share) $ 60.89  
Number of Units Outstanding (in shares), Ending 482,094 474,631
Weighted-Average Granted Date Fair Value (in dollars per share), Ending $ 40.34 $ 32.44
Vested or expected to vest, RSU (in shares) 482,094  
Vested or expected to vest, weighted-average exercise price (in dollars per share) $ 40.34  
Vested or expected to vest, weighted-average remaining contractual life (Year) 5 years 3 months 18 days  
Vested or expected to vest, aggregate intrinsic value $ 36.9  
Exercisable, number of units (in shares) 361,598  
Exercisable, weighted-average granted date fair value (in dollars per share) $ 30.32  
Exercisable, weighted-average remaining contractual (years) 4 years 1 month 6 days  
Exercisable, aggregate intrinsic value $ 27.7