LONG-TERM DEBT AND FINANCE LEASE OBLIGATIONS - Schedule of Long-term Debt (Details) - USD ($) $ in Millions	Sep. 06, 2025	Feb. 22, 2025
Debt Instrument [Line Items]
Finance lease obligations	$ 406.0	$ 427.9
Total debt	8,126.5	7,820.1
Less current maturities	(1,186.4)	(57.6)
Long-term portion	6,940.1	7,762.5
Senior Unsecured Notes due 2026 to 2033, interest rate range of 3.25% to 6.50% \| Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 6,517.9	6,517.0
Senior Unsecured Notes due 2026 to 2033, interest rate range of 3.25% to 6.50% \| Senior Notes \| Minimum
Debt Instrument [Line Items]
Stated interest rate percentage	3.25%
Senior Unsecured Notes due 2026 to 2033, interest rate range of 3.25% to 6.50% \| Senior Notes \| Maximum
Debt Instrument [Line Items]
Stated interest rate percentage	6.50%
New Albertsons L.P. Notes due 2026 to 2031, interest rate range of 6.52% to 8.70% \| Notes Payable
Debt Instrument [Line Items]
Long-term debt, gross	$ 487.0	484.6
New Albertsons L.P. Notes due 2026 to 2031, interest rate range of 6.52% to 8.70% \| Notes Payable \| Minimum
Debt Instrument [Line Items]
Stated interest rate percentage	6.52%
New Albertsons L.P. Notes due 2026 to 2031, interest rate range of 6.52% to 8.70% \| Notes Payable \| Maximum
Debt Instrument [Line Items]
Stated interest rate percentage	8.70%
Safeway Inc. Notes due 2027 to 2031, interest rate range of 7.25% to 7.45% \| Notes Payable
Debt Instrument [Line Items]
Long-term debt, gross	$ 376.2	375.9
Safeway Inc. Notes due 2027 to 2031, interest rate range of 7.25% to 7.45% \| Notes Payable \| Minimum
Debt Instrument [Line Items]
Stated interest rate percentage	7.25%
Safeway Inc. Notes due 2027 to 2031, interest rate range of 7.25% to 7.45% \| Notes Payable \| Maximum
Debt Instrument [Line Items]
Stated interest rate percentage	7.45%
ABL Facility \| Line of Credit
Debt Instrument [Line Items]
Long-term debt, gross	$ 325.0	0.0
Other financing obligations
Debt Instrument [Line Items]
Long-term debt, gross	$ 14.4	$ 14.7

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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