BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		4 Months Ended
	Apr. 29, 2026	Jun. 20, 2026	Jun. 14, 2025	Feb. 28, 2026
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash		$ 1.6		$ 4.4
LIFO expense		20.0	$ 17.3
Income tax expense		$ 29.0	$ 75.0
Effective tax rate		25.50%	24.10%
Receivables, net		$ 1,031.9		932.6
Contract liability related to gift cards		119.3		126.2
Hames Corporation
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Business combination, consideration transferred	$ 28.0
Business combination, recognized asset acquired, property, plant, and equipment	19.2
Business combination, recognized asset acquired, identifiable intangible asset, finite-lived	7.3
Business combination, recognized asset acquired, inventory, current	$ 2.2
Pharmacy
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Receivables, net		$ 601.5		$ 519.8
Class A-1 convertible common stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Common stock, shares authorized (in shares)		150,000,000		150,000,000
Common stock, par value (in dollars per share)		$ 0.01		$ 0.01
Common stock shares issued (in shares)		0		0
Convertible Preferred Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Preferred stock, shares authorized (in shares)		100,000,000		100,000,000
Preferred stock, par value (in dollars per share)		$ 0.01		$ 0.01
Series A Convertible Preferred Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Preferred stock, shares authorized (in shares)		1,750,000		1,750,000
Series A-1 Convertible Preferred Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Preferred stock, shares authorized (in shares)		1,410,000		1,410,000
Undesignated preferred stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Preferred stock, shares issued (in shares)		0		0