Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Name:	us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

INCOME TAXES - Deferred Income Taxes - Valuation Allowance (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	May 31, 2020	Feb. 23, 2020	Nov. 24, 2019	Aug. 25, 2019	May 26, 2019	Feb. 24, 2019	Nov. 25, 2018	Aug. 26, 2018	May 31, 2020	May 26, 2019	May 27, 2018
Income Taxes
Income tax expense	$ (2.8)	$ 35.7	$ 42.7	$ 36.7	$ 25.7	$ 39.6	$ 34.0	$ 34.3	$ 112.3	$ 133.6	$ 121.2
Net Operating Loss Carryforwards
Income Taxes
Income tax expense									$ 0.0	$ 1.1	$ 0.0