SEGMENT INFORMATION - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Millions	4 Months Ended
	Jun. 20, 2026	Jun. 14, 2025
Segment Reporting [Line Items]
Net sales and other revenue	$ 24,941.6	$ 24,880.8
Reconciliation to Income before income taxes:
Depreciation and amortization	(591.0)	(572.7)
Interest expense, net	(166.7)	(141.8)
Equity-based compensation expense	(31.4)	(33.7)
Gain on property dispositions and impairment losses, net	4.7	31.9
LIFO expense	(20.0)	(17.3)
Income before income taxes	113.7	311.4
Reportable Segment
Segment Reporting [Line Items]
Net sales and other revenue	24,941.6	24,880.8
Retail segment expenses:
Merchandise costs, including advertising, distribution and freight	17,701.4	17,620.9
Employee costs	3,712.3	3,660.2
Other segment expenses	2,121.1	2,080.6
Retail segment EBITDA	1,144.8	1,282.7
Reconciliation to Income before income taxes:
Corporate adjustments	(131.6)	(171.7)
Depreciation and amortization	(591.0)	(572.7)
Interest expense, net	(166.7)	(141.8)
Business transformation	(54.2)	(38.3)
Equity-based compensation expense	(31.4)	(33.7)
Gain on property dispositions and impairment losses, net	4.7	31.9
LIFO expense	(20.0)	(17.3)
Merger-related costs	(41.6)	(19.0)
Certain legal and regulatory accruals and settlements, net	(1.2)	(2.6)
Miscellaneous adjustments	1.9	(6.1)
Income before income taxes	113.7	311.4
Reportable Segment | Retail segment sales
Segment Reporting [Line Items]
Net sales and other revenue	24,679.6	24,644.4
Reportable Segment | Other revenue
Segment Reporting [Line Items]
Net sales and other revenue	$ 262.0	$ 236.4