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Share-Based Compensation - Summary of Activity for Market Performance Units (Details) - Market Performance RSUs - $ / shares
12 Months Ended
Jan. 31, 2021
Jan. 26, 2020
Jan. 27, 2019
Number of Units      
Beginning balance (in shares) 257,000    
Performance units granted (in shares) 137,224 266,000 200,442
Performance units vested (in shares) (18,682)    
Performance units cancelled/forfeited (in shares) (172,000)    
Ending balance (in shares) 203,000 257,000  
Weighted Average Grant Date Fair Value (per share)      
Beginning balance (in dollars per share) $ 54.61    
Weighted average fair value units granted (in dollars per share) 32.66    
Performance units vested (in dollars per share) 29.04    
Performance units cancelled/forfeited (in dollars per share) 45.80    
Ending balance (in dollars per share) $ 49.62 $ 54.61