Basis of Presentation and Significant Accounting Policies (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 02, 2020
item
Nov. 27, 2021
USD ($)
Nov. 28, 2020
USD ($)
Nov. 27, 2021
USD ($)
Nov. 28, 2020
USD ($)
Feb. 27, 2021
USD ($)
Disaggregation of Revenue [Abstract]            
Total revenue   $ 6,228,880 $ 6,117,038 $ 18,502,865 $ 18,126,384  
Measurement period 6 months          
Number of points for Gold status | item 500          
Percentage discount on qualifying purchases of front end merchandise on achieving "Gold" tier 20.00%          
Liability recognized into revenue   2,359        
Intersegment elimination            
Disaggregation of Revenue [Abstract]            
Revenue from contract with customer   (62,458) (76,956) (187,868) (224,417)  
Total revenue   (62,458) (76,956) (187,868) (224,417)  
Retail Pharmacy            
Disaggregation of Revenue [Abstract]            
Other revenue   27,345 27,115 90,603 93,893  
Total revenue   4,432,508 4,109,592 13,061,408 12,250,775  
Accrued contract liabilities   2,321   2,321   $ 3,754
Pharmacy sales            
Disaggregation of Revenue [Abstract]            
Revenue from contract with customer   3,132,821 2,837,137 9,069,520 8,123,143  
Front end sales            
Disaggregation of Revenue [Abstract]            
Revenue from contract with customer   1,272,342 1,245,340 3,901,285 4,033,739  
Pharmacy Services            
Disaggregation of Revenue [Abstract]            
Revenue from contract with customer   $ 1,858,830 $ 2,084,402 $ 5,629,325 $ 6,100,026