BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Sales Revenue by Similar Products (Details) - USD ($) $ in Millions	4 Months Ended
	Jun. 20, 2020	Jun. 15, 2019
Concentration Risk [Line Items]
Net sales and other revenue	$ 22,751.6	$ 18,738.4
Product line | Product concentration risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 22,751.6	$ 18,738.4
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	$ 10,783.8	$ 8,022.2
Percentage of total net sales and other revenue	47.40%	42.80%
Perishables | Product line | Product concentration risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 9,555.6	$ 7,811.6
Percentage of total net sales and other revenue	42.00%	41.70%
Pharmacy | Product line | Product concentration risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 1,554.9	$ 1,573.2
Percentage of total net sales and other revenue	6.80%	8.40%
Fuel | Product line | Product concentration risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 589.2	$ 1,076.5
Percentage of total net sales and other revenue	2.60%	5.70%
Other | Product line | Product concentration risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 268.1	$ 254.9
Percentage of total net sales and other revenue	1.20%	1.40%