DESCRIPTION OF BUSINESS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Goodwill (Details) - USD ($)	3 Months Ended	12 Months Ended
Sep. 09, 2017	Feb. 29, 2020	Feb. 23, 2019	Feb. 24, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Goodwill impairment	$ 142,300,000	$ 0	$ 0	$ 142,300,000

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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