Share-Based Compensation - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 17, 2020
Jun. 13, 2018
Oct. 31, 2020
Nov. 02, 2019
Oct. 31, 2020
Nov. 02, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Increase in shares available for equity-based awards (in shares) 2,500,000 2,400,000        
Tax benefit from share-based compensation expense     $ 0.1 $ 0.1 $ 0.8 $ 1.7
Unrecognized compensation expense related to stock options     1.5   $ 1.5  
Restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period         3 years  
Fair value of options vested         $ 7.1 $ 11.9
Unrecognized compensation costs, excluding stock options     $ 13.7   $ 13.7  
Unrecognized compensation costs, period for recognition         1 year 6 months  
Stock options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation costs, period for recognition         1 year 4 months 24 days  
Performance-based restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period         3 years  
Shares outstanding (in shares)     0   0  
Performance-based restricted stock units | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Target percentage of performance award which can be earned         0.00%  
Performance-based restricted stock units | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Target percentage of performance award which can be earned         200.00%  
Time-Based Cash-Settled Awards            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period         3 years  
Unrecognized compensation costs, excluding stock options     $ 3.5   $ 3.5  
Unrecognized compensation costs, period for recognition         1 year 8 months 12 days  
Performance-Based Cash-Settled Awards            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period         3 years  
Shares outstanding (in shares)     0   0  
Performance-Based Cash-Settled Awards | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Target percentage of performance award which can be earned         0.00%  
Performance-Based Cash-Settled Awards | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Target percentage of performance award which can be earned         200.00%