BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions	3 Months Ended		4 Months Ended		6 Months Ended
	Sep. 09, 2023 USD ($) format shares	Sep. 10, 2022 USD ($)	Jun. 17, 2023 USD ($) shares	Jun. 20, 2020 USD ($)	Sep. 09, 2023 USD ($) format segment division shares	Sep. 10, 2022 USD ($)	Feb. 25, 2023 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash	$ 4.4				$ 4.4		$ 8.0
LIFO expense	$ 26.2	$ 54.8			$ 60.2	$ 116.9
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				0
Income tax expense	$ 67.5	$ 117.4			$ 133.6	$ 260.7
Effective tax rate	20.20%	25.50%			16.30%	24.00%
Reduction of reserve			$ 49.7
Number of divisions | division					12
Number of reportable segments | segment					1
Number of store format | format	1				1
Receivables, net	$ 710.1				$ 710.1		687.6
Contract liability related to gift cards	97.9				97.9		115.0
Pharmacy
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Receivables, net	354.0				354.0		$ 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	$ 0.0
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