v3.25.4
Stock-Based Compensation Plans - Summary of Performance Share Units Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Jan. 31, 2024
Stock-Based Compensation Plans      
Vested or expected to vest, shares (in shares) 1,555,101    
Vested or expected to vest, weighted-average granted date fair value (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    
PSU      
Stock-Based Compensation Plans      
Number of Units Outstanding (in shares), Beginning 1,008,645 988,543  
Weighted-Average Granted Date Fair Value (in dollars per share), Beginning $ 62.92 $ 53.81  
Weighted-Average Remaining Contractual (years) 4 years 4 months 24 days 4 years 7 months 6 days 4 years 6 months
Aggregate Intrinsic Value $ 73.9 $ 123.1 $ 86.3
PSUs Granted (in shares) 103,558 92,873  
PSUs Granted, weighted-average granted date fair value (in dollars per share) $ 121.14 $ 109.77  
Performance units issued (in shares) 58,628 40,477  
Performance units issued, weighted-average granted date fair value (in dollars per share) $ 61.04 $ 80.11  
Exercised (in shares) (121,829) (109,820)  
Exercised, weighted-average granted date fair value (in dollars per share) $ 39.79 $ 19.88  
Forfeited (in shares) (36,734) (3,428)  
Forfeited, weighted-average granted date fair value (in dollars per share) $ 111.59 $ 80.66  
Number of Units Outstanding (in shares), Ending 1,012,268 1,008,645 988,543
Weighted-Average Granted Date Fair Value (in dollars per share), Ending $ 69.58 $ 62.92 $ 53.81
Vested or expected to vest, shares (in shares) 1,012,268    
Vested or expected to vest, weighted-average granted date fair value (in dollars per share) $ 69.58    
Vested or expected to vest, weighted-average remaining contractual life (Year) 4 years 4 months 24 days    
Vested or expected to vest, aggregate intrinsic value $ 73.9    
Exercisable, number of units (in shares) 841,739    
Exercisable, weighted-average granted date fair value (in dollars per share) $ 57.99    
Exercisable, weighted-average remaining contractual (years) 3 years 7 months 6 days    
Exercisable, aggregate intrinsic value $ 61.5