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LONG-TERM DEBT AND FINANCE LEASE OBLIGATIONS - Schedule of Long-term Debt (Details) - USD ($)
$ in Millions
Sep. 12, 2026
Feb. 28, 2026
Debt Instrument [Line Items]    
Finance lease obligations $ 444.7 $ 412.9
Total debt 9,328.2 8,946.6
Less current maturities (882.2) (534.0)
Long-term portion 8,446.0 8,412.6
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 $ 7,235.4 7,228.9
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 2027 to 2031, interest rate range of 6.52% to 8.70% | Notes Payable    
Debt Instrument [Line Items]    
Long-term debt, gross $ 435.5 489.3
New Albertsons L.P. Notes due 2027 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 2027 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 $ 376.8 376.5
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 $ 825.0 425.0
Other financing obligations    
Debt Instrument [Line Items]    
Long-term debt, gross $ 10.8 $ 14.0