v3.25.4
Stock-Based Compensation Plans - Summary of Option Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Jan. 31, 2024
Stock-Based Compensation Plans      
Number of Stock Options Outstanding (in shares), Beginning 1,501,901 1,568,551  
Weighted-Average Exercise Price (in dollars per share), Beginning $ 61.06 $ 52.31  
Weighted-Average Remaining Contractual Life (years) 4 years 3 years 9 months 18 days 3 years 10 months 24 days
Aggregate Intrinsic Value $ 15.3 $ 91.6 $ 54.8
Granted, shares (in shares) 432,191 280,658 278,845
Granted, weighted-average exercise price (in dollars per share) $ 99.79 $ 88.82  
Exercised, shares (in shares) (303,660) (332,109)  
Exercised, weighted-average exercise price (in dollars per share) $ 46.25 $ 37.25  
Forfeited, shares (in shares) (75,180) (15,199)  
Forfeited, weighted-average exercise price (in dollars per share) $ 80.09 $ 77.06  
Expired, shares (in shares) (151)    
Expired, weighted-average exercise price (in dollars per share) $ 77.41    
Number of Stock Options Outstanding (in shares), Ending 1,555,101 1,501,901 1,568,551
Weighted-Average Exercise Price (in dollars per share), Ending $ 73.19 $ 61.06 $ 52.31
Vested or expected to vest, shares (in shares) 1,555,101    
Vested or expected to vest, weighted-average exercise price (in dollars per share) $ 73.19    
Vested or expected to vest, weighted-average remaining contractual life (Year) 4 years    
Vested or expected to vest, aggregate intrinsic value $ 15.3    
Exercisable, shares (in shares) 1,074,719    
Exercisable, weighted-average exercise price (in dollars per share) $ 64.24    
Exercisable, weighted-average remaining contractual life (Year) 3 years 1 month 6 days    
Exercisable, aggregate intrinsic value $ 15.0