BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Sales Revenue by Similar Products (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 12, 2020	Sep. 07, 2019	Sep. 12, 2020	Sep. 07, 2019
Concentration Risk [Line Items]
Net sales and other revenue	$ 15,757.6	$ 14,176.7	$ 38,509.2	$ 32,915.1
Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 15,757.6	$ 14,176.7	$ 38,509.2	$ 32,915.1
Percentage of total net sales and other revenue	100.00%	100.00%	100.00%	100.00%
Non-perishables | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 7,126.6	$ 6,172.0	$ 17,910.4	$ 14,194.2
Percentage of total net sales and other revenue	45.20%	43.50%	46.50%	43.10%
Perishables | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 6,654.1	$ 5,844.6	$ 16,209.7	$ 13,656.2
Percentage of total net sales and other revenue	42.20%	41.20%	42.10%	41.50%
Pharmacy | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 1,171.8	$ 1,156.5	$ 2,726.7	$ 2,729.7
Percentage of total net sales and other revenue	7.50%	8.20%	7.10%	8.30%
Fuel | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 570.8	$ 793.2	$ 1,160.0	$ 1,869.7
Percentage of total net sales and other revenue	3.60%	5.60%	3.00%	5.70%
Other | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 234.3	$ 210.4	$ 502.4	$ 465.3
Percentage of total net sales and other revenue	1.50%	1.50%	1.30%	1.40%