Derivative Instruments and Hedging Activities (Effects Of Derivatives Not Designated As Hedging Instruments) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 25, 2018	Feb. 26, 2017	Feb. 25, 2018	Feb. 26, 2017
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Earnings	$ 8.8	$ 1.2	$ 6.9	$ 5.6
Equity forwards | Restaurant labor expenses
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Earnings	3.3	0.5	2.7	2.0
Equity forwards | General and administrative expenses
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Earnings	$ 5.5	$ 0.7	$ 4.2	$ 3.6