SCHEDULE II Valuation and Qualifying Accounts - Tabular Disclosure (Details) - Valuation Allowance of Deferred Tax Assets - USD ($) $ in Millions	12 Months Ended
	May 31, 2020	May 26, 2019	May 27, 2018
Valuation and Qualifying Accounts
Valuation Allowances and Reserves, Balance, Beginning Balance	$ 64.6	$ 62.0	$ 98.4
Additions Charged to Costs, Expenses and Equity		3.7
Deductions from Reserves	10.1	1.1	36.4
Valuation Allowances and Reserves, Balance, Ending Balance	$ 54.5	$ 64.6	$ 62.0