LONG-TERM DEBT AND FINANCE LEASE OBLIGATIONS - Schedule of Interest Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 27, 2021	Feb. 29, 2020	Feb. 23, 2019
Debt Disclosure [Abstract]
ABL Facility, senior secured and unsecured notes, term loans and debentures	$ 463.4	$ 565.3	$ 698.3
Finance lease obligations	70.5	79.8
Finance lease obligations			81.8
Amortization and expense of previously deferred financing costs	20.9	39.8	42.7
Debt (premiums) discounts, net	(0.6)	34.1	20.3
Other interest income	(16.0)	(21.0)	(12.3)
Interest expense, net	$ 538.2	$ 698.0	$ 830.8