Acquisition and Divestiture (Divestiture) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Feb. 25, 2018	Feb. 26, 2017	Nov. 27, 2016	Feb. 25, 2018	Feb. 26, 2017
Divestiture [Line Items]
Proceeds from divestiture				$ 0.0	$ 17.5
Pre-tax loss on sale of business	$ 0.0	$ 0.0		$ 0.0	$ 13.5
Sale of Martel, Ohio Manufacturing Facility [Member] | Convenience Stores and Foodservice Segment [Member]
Divestiture [Line Items]
Proceeds from divestiture			$ 17.5
Pre-tax loss on sale of business			$ 13.5