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. 11, 2021	Sep. 12, 2020	Sep. 11, 2021	Sep. 12, 2020
Concentration Risk [Line Items]
Net sales and other revenue	$ 16,505.7	$ 15,757.6	$ 37,775.1	$ 38,509.2
Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 16,505.7	$ 15,757.6	$ 37,775.1	$ 38,509.2
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	$ 7,268.5	$ 7,126.6	$ 16,538.8	$ 17,910.4
Percentage of total net sales and other revenue	44.00%	45.20%	43.80%	46.50%
Perishables | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 6,823.2	$ 6,654.1	$ 15,735.8	$ 16,209.7
Percentage of total net sales and other revenue	41.30%	42.20%	41.60%	42.10%
Pharmacy | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 1,253.4	$ 1,171.8	$ 2,982.0	$ 2,726.7
Percentage of total net sales and other revenue	7.60%	7.50%	7.90%	7.10%
Fuel | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 918.5	$ 570.8	$ 1,967.8	$ 1,160.0
Percentage of total net sales and other revenue	5.60%	3.60%	5.20%	3.00%
Other | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 242.1	$ 234.3	$ 550.7	$ 502.4
Percentage of total net sales and other revenue	1.50%	1.50%	1.50%	1.30%