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Stock-Based Compensation - Performance Share Awards and Restricted Stock and Restricted Stock Unit Awards (Details) - $ / shares
3 Months Ended 6 Months Ended
Feb. 02, 2018
Feb. 03, 2017
May 04, 2018
May 05, 2017
Performance share awards        
Stock-Based Compensation        
Performance goal period     3 years  
Weighted-Average Fair Value at Date of Grant        
Granted (in dollars per share) $ 65.40 $ 54.52 $ 0 $ 0
Performance share awards | Maximum        
Stock-Based Compensation        
Vesting (as a percent)     200.00%  
Performance share awards | Minimum        
Stock-Based Compensation        
Vesting (as a percent)     0.00%  
Restricted stock and restricted stock unit awards        
Stock-Based Compensation        
Vesting (as a percent)     33.33%  
Weighted-Average Fair Value at Date of Grant        
Vesting period     3 years  
Granted (in dollars per share)     $ 65.82 $ 56.67