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Share-Based Compensation - Restricted stock units and performance-based restricted stock units (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended 65 Months Ended
Apr. 30, 2022
Jul. 29, 2023
Jul. 30, 2022
Jan. 28, 2023
Jan. 29, 2022
Jul. 29, 2023
Number            
Forfeited (in shares)   (100)        
Weighted-Average Grant Date Fair Value            
Repurchase and retirement of common stock $ 40,007,000     $ 40 $ 60,000,000 $ 150,000,000
Unrecognized compensation costs related to non-vested share-based compensation   $ 46,600,000       $ 46,600,000
Compensation cost not yet recognized, period for recognition (in years)   2 years 6 months        
Performance-Based Restricted Stock Units Based On Market Condition            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period (in years)   3 years        
Restricted Stock Units            
Number            
Non-vested balance, beginning balance (in shares)   226,389        
Granted (in shares)   67,048        
Vested (in shares)   (70,786)        
Forfeited (in shares)   (12,613)        
Non-vested balance, ending balance (in shares)   210,038   226,389   210,038
Weighted-Average Grant Date Fair Value            
Non-vested balance, beginning balance (in dollars per share)   $ 142.20        
Granted (in dollars per share)   199.53        
Vested (in dollars per share)   133.15        
Forfeited (in dollars per share)   153.16        
Non-vested balance, ending balance (in dollars per share)   $ 162.89   $ 142.20   $ 162.89
Restricted Stock Units | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period (in years)   1 year        
Restricted Stock Units | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period (in years)   4 years        
Performance-Based Restricted Stock Units            
Number            
Non-vested balance, beginning balance (in shares)   458,062        
Granted (in shares)   129,442        
Vested (in shares)   (157,192)        
Forfeited (in shares)   (119,026)        
Non-vested balance, ending balance (in shares)   311,286   458,062   311,286
Weighted-Average Grant Date Fair Value            
Non-vested balance, beginning balance (in dollars per share)   $ 163.56        
Granted (in dollars per share)   244.95        
Vested (in dollars per share)   151.73        
Forfeited (in dollars per share)   156.71        
Non-vested balance, ending balance (in dollars per share)   $ 206.00   $ 163.56   $ 206.00
Treasury Stock | Restricted Stock Units And Performance-Based Restricted Stock Units            
Weighted-Average Grant Date Fair Value            
Shares withheld for taxes (in shares)   83,059 28,832      
Additional paid-in capital            
Weighted-Average Grant Date Fair Value            
Repurchase and retirement of common stock $ 40,005,000          
Additional paid-in capital | Restricted Stock Units And Performance-Based Restricted Stock Units            
Weighted-Average Grant Date Fair Value            
Repurchase and retirement of common stock   $ 16,200,000 $ 4,400,000