DESCRIPTION OF BUSINESS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Company-Owned Life Insurance and Self-Insurance Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 27, 2021	Feb. 29, 2020
Schedule of Self Insurance Liability [Line Items]
Cash surrender value of life insurance	$ 148,300	$ 149,200
Balance of company-owned life insurance	89,900	87,800
Minimum
Schedule of Self Insurance Liability [Line Items]
Stop-loss threshold amount for self-insurance	250
Maximum
Schedule of Self Insurance Liability [Line Items]
Stop-loss threshold amount for self-insurance	5,000
Receivables, Net, Current
Schedule of Self Insurance Liability [Line Items]
Reinsurance receivables	24,600	22,500
Other Assets
Schedule of Self Insurance Liability [Line Items]
Reinsurance receivables	$ 47,000	$ 43,900