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INCOME TAXES - Schedule of Components of Income Tax Benefit (Details) - USD ($) $ in Millions	3 Months Ended						4 Months Ended		12 Months Ended
	Feb. 27, 2021	Dec. 05, 2020	Sep. 12, 2020	Feb. 29, 2020	Nov. 30, 2019	Sep. 07, 2019	Jun. 20, 2020	Jun. 15, 2019	Feb. 27, 2021	Feb. 29, 2020	Feb. 23, 2019
Current
Federal									$ 307.0	$ 87.2	$ 9.0
State									84.5	49.2	(6.7)
Foreign									(0.7)	2.3	0.3
Total Current									390.8	138.7	2.6
Deferred
Federal									(92.5)	(14.1)	(77.9)
State									(27.3)	(1.1)	(3.6)
Foreign									7.5	9.3	0.0
Total Deferred									(112.3)	(5.9)	(81.5)
Income tax expense (benefit)	$ (64.1)	$ 29.5	$ 111.2	$ 22.3	$ 12.9	$ 81.9	$ 201.9	$ 15.7	278.5	132.8	(78.9)
Net Operating Loss
Current
Federal									5.7	66.8	12.8
State									$ 16.7	$ 22.6	$ 9.5