DESCRIPTION OF BUSINESS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition and Costs of Sales and Vendor Allowances (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 25, 2023	Feb. 26, 2022	Feb. 27, 2021
Deferred Revenue Arrangement [Line Items]
Receivables, net	$ 687.6	$ 560.6
Contract liability	115.0	104.3
Reduction of inventory for Vendor Allowance	55.7	54.1
Advertising costs	498.2	440.5	$ 385.1
Cooperative advertising allowances	63.9	72.9	$ 72.7
Pharmacy
Deferred Revenue Arrangement [Line Items]
Receivables, net	$ 313.5	$ 247.5