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Basis of Presentation - Revenue Recognition (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 01, 2019
USD ($)
Point
Jun. 02, 2018
USD ($)
Mar. 02, 2019
USD ($)
Revenue Recognition      
Revenues $ 5,372,589 $ 5,388,490  
Intersegment elimination      
Revenue Recognition      
Revenues $ (58,511) $ (52,037)  
Retail Pharmacy      
Revenue Recognition      
Number of points awarded for each dollar spent towards front end merchandise | Point 1    
Number of points awarded for each qualifying prescription | Point 25    
Accumulated number of points in a calendar year to achieve the "Gold" tier | Point 1,000    
Percentage discount on qualifying purchases of front end merchandise on achieving "Gold" tier 20.00%    
Accrued contract liabilities $ 74,921   $ 63,720
Accrued contract liabilities included in other current liabilities 51,581   51,042
Accrued contract liabilities included in noncurrent liabilities $ 23,340   12,678
Expiration window to redeem accumulated Bonus Cash (in days) 60 days    
Revenues $ 3,864,808    
Retail Pharmacy | Other      
Revenue Recognition      
Revenues 36,203    
Pharmacy sales      
Revenue Recognition      
Revenues 2,563,244    
Front end sales      
Revenue Recognition      
Revenues 1,265,361    
Pharmacy Services      
Revenue Recognition      
Revenues $ 1,566,292    
Accounting Standards Update 2014-09      
Revenue Recognition      
Revenues     $ 123,500