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. 24, 2024	Feb. 25, 2023	Feb. 26, 2022
Deferred Revenue Arrangement [Line Items]
Receivables, net	$ 724.4	$ 687.6
Contract liability	111.4	115.0
Reduction of inventory for Vendor Allowances	66.6	55.7
Advertising costs	535.7	498.2	$ 440.5
Cooperative advertising allowances	67.0	63.9	$ 72.9
Pharmacy
Deferred Revenue Arrangement [Line Items]
Receivables, net	$ 376.1	$ 313.5