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ACCOUNTING POLICIES - REVENUE RECOGNITION (Details) - USD ($)
$ in Millions
3 Months Ended 4 Months Ended 12 Months Ended
Feb. 04, 2018
Feb. 01, 2020
Nov. 09, 2019
Aug. 17, 2019
Feb. 02, 2019
Nov. 10, 2018
Aug. 18, 2018
May 25, 2019
May 26, 2018
Feb. 01, 2020
Feb. 02, 2019
Feb. 03, 2018
Disaggregation of revenue                        
Merchandise costs   $ 22,507 $ 21,798 $ 22,007 $ 21,955 $ 21,753 $ 21,976 $ 28,983 $ 29,419 $ 95,294 $ 95,103 $ 95,811
Total Sales and other revenue   28,893 $ 27,974 $ 28,168 28,286 $ 27,831 $ 28,014 $ 37,251 $ 37,722 122,286 121,852 $ 123,280
Receivables   1,706     1,589         $ 1,706 1,589  
Typical period for redemption of gift certificates                   12 months    
Gift card and gift certificate deferred revenue liability   114     100         $ 114 $ 100  
Percentage of total sales                   100.00% 100.00% 100.00%
Digital sales growth (as a percentage)                   29.00% 58.00% 90.00%
Non Perishable                        
Disaggregation of revenue                        
Total Sales and other revenue                   $ 61,464 $ 60,649 $ 60,872
Percentage of total sales                   50.30% 49.80% 49.40%
Fresh                        
Disaggregation of revenue                        
Total Sales and other revenue                   $ 29,452 $ 29,089 $ 29,141
Percentage of total sales                   24.10% 23.90% 23.60%
Supermarket Fuel                        
Disaggregation of revenue                        
Total Sales and other revenue                   $ 14,052 $ 14,903 $ 13,177
Percentage of total sales                   11.50% 12.20% 10.70%
Pharmacy                        
Disaggregation of revenue                        
Total Sales and other revenue                   $ 11,015 $ 10,617 $ 10,724
Typical period for collection of third party receivables                   3 months    
Receivables   $ 646     $ 645         $ 646 $ 645  
Percentage of total sales                   9.00% 8.70% 8.70%
Pharmacy | Adjustment                        
Disaggregation of revenue                        
Merchandise costs $ (250)                      
Total Sales and other revenue $ (250)                      
Convenience Stores                        
Disaggregation of revenue                        
Total Sales and other revenue                     $ 944 $ 4,515
Percentage of total sales                     0.80% 3.70%
Other                        
Disaggregation of revenue                        
Total Sales and other revenue                   $ 6,303 $ 5,650 $ 4,851
Percentage of total sales                   5.10% 4.60% 3.90%