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Share-Based Compensation - Summary of the Activity for Non-vested Restricted Stock Unit Awards (Details) - $ / shares
12 Months Ended
Jan. 31, 2021
Jan. 26, 2020
Jan. 27, 2019
Employee stock unit awards      
Number of Units      
Beginning balance (in shares) 2,102,000    
Stock units granted (in shares) 909,000    
Stock units vested (in shares) (841,000)    
Stock units forfeited (in shares) (111,000)    
Ending balance (in shares) 2,059,000 2,102,000  
Weighted Average Grant Date Fair Value (per unit)      
Beginning balance (in dollars per share) $ 43.43    
Stock units granted (in dollars per share) 56.28    
Stock units vested (in dollars per share) 39.81    
Stock units forfeited (in dollars per share) 46.97    
Ending balance (in dollars per share) $ 50.39 $ 43.43  
Market performance RSUs      
Number of Units      
Beginning balance (in shares) 257,000    
Stock units granted (in shares) 137,224 266,000 200,442
Stock units vested (in shares) (18,682)    
Stock units forfeited (in shares) (172,000)    
Ending balance (in shares) 203,000 257,000  
Weighted Average Grant Date Fair Value (per unit)      
Beginning balance (in dollars per share) $ 54.61    
Stock units granted (in dollars per share) 32.66    
Stock units vested (in dollars per share) 29.04    
Stock units forfeited (in dollars per share) 45.80    
Ending balance (in dollars per share) $ 49.62 $ 54.61  
Restricted Stock Units (RSUs) | Non-employee director stock unit awards      
Number of Units      
Beginning balance (in shares) 26,000    
Stock units granted (in shares) 28,000    
Stock units vested (in shares) (26,000)    
Stock units forfeited (in shares) 0    
Ending balance (in shares) 28,000 26,000  
Weighted Average Grant Date Fair Value (per unit)      
Beginning balance (in dollars per share) $ 50.55    
Stock units granted (in dollars per share) 51.52    
Stock units vested (in dollars per share) 50.55    
Stock units forfeited (in dollars per share) 0    
Ending balance (in dollars per share) $ 51.52 $ 50.55  
Restricted Stock Units (RSUs) | Subject to share settlement | Non-employee director stock unit awards      
Number of Units      
Beginning balance (in shares) 12,000    
Stock units granted (in shares) 13,000    
Stock units vested (in shares) (12,000)    
Stock units forfeited (in shares) 0    
Ending balance (in shares) 13,000 12,000  
Restricted Stock Units (RSUs) | Subject to cash settlement | Non-employee director stock unit awards      
Number of Units      
Beginning balance (in shares) 14,000    
Stock units granted (in shares) 15,000    
Stock units vested (in shares) (14,000)    
Stock units forfeited (in shares) 0    
Ending balance (in shares) 15,000 14,000