BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Sales Revenue by Similar Products (Details) - USD ($) $ in Millions	4 Months Ended
	Jun. 19, 2021	Jun. 20, 2020
Concentration Risk [Line Items]
Net sales and other revenue	$ 21,269.4	$ 22,751.6
Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 21,269.4	$ 22,751.6
Percentage of total net sales and other revenue	100.00%	100.00%
Non-perishables | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 9,270.3	$ 10,783.8
Percentage of total net sales and other revenue	43.60%	47.40%
Perishables | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 8,912.6	$ 9,555.6
Percentage of total net sales and other revenue	41.90%	42.00%
Pharmacy | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 1,728.6	$ 1,554.9
Percentage of total net sales and other revenue	8.10%	6.80%
Fuel | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 1,049.3	$ 589.2
Percentage of total net sales and other revenue	4.90%	2.60%
Other | Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 308.6	$ 268.1
Percentage of total net sales and other revenue	1.50%	1.20%