DESCRIPTION OF BUSINESS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Sales Revenue by Similar Products (Details) - USD ($) $ in Millions		3 Months Ended						4 Months Ended		12 Months Ended
	Feb. 29, 2020	Feb. 27, 2021	Dec. 05, 2020	Sep. 12, 2020	Feb. 29, 2020	Nov. 30, 2019	Sep. 07, 2019	Jun. 20, 2020	Jun. 15, 2019	Feb. 27, 2021	Feb. 29, 2020	Feb. 23, 2019
Concentration Risk [Line Items]
Net sales and other revenue	$ 1,100.0	$ 15,772.3	$ 15,408.9	$ 15,757.6	$ 15,436.8	$ 14,103.2	$ 14,176.7	$ 22,751.6	$ 18,738.4	$ 69,690.4	$ 62,455.1	$ 60,534.5
Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Percentage of total net sales and other revenue										100.00%	100.00%	100.00%
Non-perishables
Concentration Risk [Line Items]
Net sales and other revenue										$ 32,100.5	$ 27,165.3	$ 26,371.8
Non-perishables | Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Percentage of total net sales and other revenue										46.10%	43.50%	43.60%
Perishables
Concentration Risk [Line Items]
Net sales and other revenue										$ 29,189.5	$ 25,681.8	$ 24,920.9
Perishables | Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Percentage of total net sales and other revenue										41.90%	41.10%	41.20%
Pharmacy
Concentration Risk [Line Items]
Net sales and other revenue										$ 5,195.8	$ 5,236.8	$ 4,986.6
Pharmacy | Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Percentage of total net sales and other revenue										7.40%	8.40%	8.20%
Fuel
Concentration Risk [Line Items]
Net sales and other revenue										$ 2,236.5	$ 3,430.4	$ 3,455.9
Fuel | Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Percentage of total net sales and other revenue										3.20%	5.50%	5.70%
Other
Concentration Risk [Line Items]
Net sales and other revenue										$ 968.1	$ 940.8	$ 799.3
Other | Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Percentage of total net sales and other revenue										1.40%	1.50%	1.30%