BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 04, 2021 USD ($) format shares	Dec. 05, 2020 USD ($)	Dec. 04, 2021 USD ($) division format segment shares	Dec. 05, 2020 USD ($)	Feb. 27, 2021 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash	$ 50.6		$ 50.6		$ 50.6
LIFO expense	$ 29.5	$ 14.3	$ 58.6	$ 37.5
Preferred stock convertible, shares (in shares) | shares	262,601		262,601
Convertible preferred stock, outstanding, percentage	15.00%
Income tax expense	$ 98.4	$ 29.5	$ 331.2	$ 342.6
Effective tax rate	18.80%	19.30%	22.10%	25.60%
Number of divisions | division			12
Number of reportable segments | segment			1
Number of store format | format	1		1
Receivables, net	$ 607.4		$ 607.4		550.9
Contract liability related to gift cards	$ 103.3		103.3		98.1
Class A Common Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Conversion of stock, shares converted (in shares) | shares	15,247,696
Pharmacy
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Receivables, net	$ 269.5		269.5		$ 262.5
RSUs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Compensation cost not yet recognized	$ 113.7		$ 113.7
Number of unvested phantom units (in shares) | shares	10,000,000		10,000,000
Period for recognition of unrecognized compensation cost			1 year 9 months 18 days
RSAs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Compensation cost not yet recognized	$ 5.5		$ 5.5
Number of unvested phantom units (in shares) | shares	1,000,000		1,000,000
Period for recognition of unrecognized compensation cost			1 year 10 months 24 days