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Stock-Based Compensation Plans - Summary of Option Activity (Details)
$ / shares in Units, $ in Millions
 6 Months Ended 12 Months Ended
Jul. 31, 2022
USD ($)
$ / shares
shares
Jan. 31, 2022
USD ($)
$ / shares
shares
Stock-Based Compensation Plans    
Weighted-Average Remaining Contractual Life (Year) 4 years 7 months 6 days 4 years 4 months 24 days
Granted, shares (in shares) | shares 354,699  
Granted, weighted-average exercise price (in dollars per share) | $ / shares $ 62.57  
Exercised, shares (in shares) | shares (32,337)  
Exercised, weighted-average exercise price (in dollars per share) | $ / shares $ 26.51  
Forfeited, shares (in shares) | shares (13,663)  
Forfeited, weighted-average exercise price (in dollars per share) | $ / shares $ 53.06  
Number of Stock Options Outstanding (in shares) | shares 1,627,978 1,319,279
Weighted-Average Exercise Price (in dollars per share) | $ / shares $ 46.34 $ 42.35
Aggregate Intrinsic Value | $ $ 41.5  
Aggregate Intrinsic Value | $ $ 37.4 $ 41.5
Vested or expected to vest, shares (in shares) | shares 1,627,978  
Vested or expected to vest, weighted-average exercise price (in dollars per share) | $ / shares $ 46.34  
Vested or expected to vest, weighted-average remaining contractual life (Year) 4 years 7 months 6 days  
Vested or expected to vest, aggregate intrinsic value | $ $ 37.4  
Exercisable, shares (in shares) | shares 827,223  
Exercisable, weighted-average exercise price (in dollars per share) | $ / shares $ 36.69  
Exercisable, weighted-average remaining contractual life (Year) 3 years 6 months  
Exercisable, aggregate intrinsic value | $ $ 26.9