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. 22, 2025	Feb. 24, 2024	Feb. 25, 2023
Deferred Revenue Arrangement [Line Items]
Receivables, net	$ 834.8	$ 724.4
Contract liability	119.9	111.4
Reduction of inventory for Vendor Allowances	71.7	66.6
Advertising costs	530.0	535.7	$ 498.2
Cooperative advertising allowances	62.3	67.0	$ 63.9
Pharmacy
Deferred Revenue Arrangement [Line Items]
Receivables, net	$ 464.1	$ 376.1