Summary Of Significant Accounting Policies (Depreciation And Amortization Expense From Continuing Operations Related To Land, Buildings And Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	May 28, 2017	May 29, 2016	May 31, 2015
Property, Plant and Equipment [Line Items]
Depreciation and amortization on buildings and equipment	$ 272.9	$ 290.2	$ 319.3
Losses on replacement of equipment	3.2	5.5	5.5
Buildings And Equipment
Property, Plant and Equipment [Line Items]
Depreciation and amortization on buildings and equipment	$ 253.3	$ 274.4	$ 305.0