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Revolving Credit Agreement (Details)
 9 Months Ended 12 Months Ended
Nov. 03, 2018
USD ($)
Oct. 28, 2017
USD ($)
Feb. 03, 2018
USD ($)
Credit agreement      
Payments of Financing Costs $ 0 $ 1,115,000  
Minimum Coverage Ratio Under Credit Facility 2.5    
Line of Credit Facility, Maximum Borrowing Capacity $ 800,000,000    
Line of Credit Facility, Expansion Option     $ 200,000,000
Reference rate LIBOR    
Percentage points added to reference rate 1.375%    
Letters of credit issued $ 24,500,000    
Unutilized credit facility borrowing capacity $ 584,400,000    
Maximum Leverage Ratio Under Credit Facility 3.5    
Annual commitment fee (as a percent) 0.20%    
Proceeds from (Repayments of) Lines of Credit $ 191,100,000 $ 0