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Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jul. 29, 2018
Oct. 28, 2018
Oct. 29, 2017
Oct. 30, 2016
Stock-Based Compensation        
Stock-based compensation expense unrecognized   $ 34,200    
Period for recognition of unrecognized stock-based compensation expense   3 years 2 months 12 days    
Cash received from stock options exercises   $ 71,803 $ 21,726 $ 12,075 [1]
Number of shares available for future grants (in shares)   16,100,000 46,700,000 48,100,000
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    
[1] Fiscal 2016 included 53 weeks.