BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions	4 Months Ended
	Jun. 17, 2023 USD ($) division segment format shares	Jun. 18, 2022 USD ($)	Jun. 20, 2020 USD ($)	Feb. 25, 2023 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash	$ 8.0			$ 8.0
LIFO expense	$ 34.0	$ 62.1
Preferred stock convertible, shares (in shares) | shares	50,000
Convertible preferred stock conversions (in shares) | shares	2,903,200
Convertible preferred stock, outstanding, percentage	100.00%
Temporary equity, shares outstanding (in shares) | shares	0
Income tax expense	$ 66.1	$ 143.3
Effective tax rate	13.70%	22.80%
Reduction of reserve	$ 49.7
Number of divisions | division	12
Number of reportable segments | segment	1
Number of store format | format	1
Receivables, net	$ 684.3			687.6
Contract liability related to gift cards	104.1			115.0
Pharmacy
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Receivables, net	$ 317.6			$ 313.5
Class A Common Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Convertible preferred stock conversions (in shares) | shares	101,611,902
Convertible Preferred Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Escrow deposit	$ 0.0		$ 36.5
Restricted cash and investments			$ 2,900.0
Preferred stock, agreement appraisal value of the stock liquidation preference, percent			165.00%
EI Rancho
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Ownership interest percentage	45.00%
EI Rancho
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Proceeds from sale of equity method investments	$ 166.1
Income from equity method investments	$ 10.5