LONG-TERM DEBT AND FINANCE LEASE OBLIGATIONS - Schedule of Long-term Debt (Details) - USD ($) $ in Millions	Feb. 28, 2026	Feb. 22, 2025
Debt Instrument [Line Items]
Unamortized debt discounts	$ 37.9	$ 28.6
Deferred financing costs	55.2	31.6
Long-term debt, gross	8,626.8
Finance lease obligations	412.9	427.9
Total debt	8,946.6	7,820.1
Less current maturities	(534.0)	(57.6)
Long-term portion	8,412.6	7,762.5
Senior Unsecured Notes due 2028 to 2034, interest rate range of 3.50% to 6.50% \| Senior notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 7,228.9	6,517.0
Senior Unsecured Notes due 2028 to 2034, interest rate range of 3.50% to 6.50% \| Senior notes \| Minimum
Debt Instrument [Line Items]
Stated interest rate percentage	3.50%
Senior Unsecured Notes due 2028 to 2034, interest rate range of 3.50% 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	$ 489.3	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	$ 376.5	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 \| Notes payable
Debt Instrument [Line Items]
Long-term debt, gross	$ 425.0
ABL Facility \| Line of credit
Debt Instrument [Line Items]
Long-term debt, gross	425.0	0.0
Other financing obligations
Debt Instrument [Line Items]
Long-term debt, gross	$ 14.0	$ 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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