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DESCRIPTION OF BUSINESS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Self-Insurance Liabilities (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 29, 2020
Feb. 23, 2019
Movement in Present Value of Future Insurance Profits [Roll Forward]    
Beginning balance $ 1,146.3 $ 1,217.7
Expense 323.4 323.5
Claim payments (295.6) (279.3)
Other reductions (26.7) (115.6)
Ending balance 1,147.4 1,146.3
Less current portion (308.9) (306.8)
Long-term portion $ 838.5 $ 839.5