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Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jul. 29, 2018
Oct. 27, 2019
Oct. 28, 2018
Oct. 29, 2017
Stock-Based Compensation        
Stock-based compensation expense recognized   $ 19,700 $ 20,600 $ 15,600
Stock-based compensation expense unrecognized   $ 27,600    
Period for recognition of unrecognized stock-based compensation expense   2 years 7 months 6 days    
Cash received from stock options exercises   $ 59,895 $ 71,803 $ 21,726
Number of shares available for future grants (in shares)   14,900,000 16,100,000 46,700,000
Full-Time Employees        
Stock-Based Compensation        
Options granted (in shares) 200      
Part-Time Employees        
Stock-Based Compensation        
Options granted (in shares) 100      
Stock options        
Stock-Based Compensation        
Vesting period 5 years 4 years    
Stock option expiration period 10 years 10 years    
Stock options | Fiscal 2020 And Thereafter        
Stock-Based Compensation        
Equity award deliverable criteria, award type percentage   50.00%    
Time-vested Restricted Stock Units | Fiscal 2020 And Thereafter        
Stock-Based Compensation        
Vesting period   3 years    
Equity award deliverable criteria, award type percentage   50.00%