Derivative Instruments And Hedging Activities (Effects Of Derivatives Not Designated As Hedging Instruments) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2016	Feb. 22, 2015	Feb. 28, 2016	Feb. 22, 2015
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Earnings	$ 5.1	$ 5.6	$ 8.3	$ 9.6
Equity forwards | Restaurant labor expenses
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Earnings	1.7	1.7	2.7	2.9
Equity forwards | General and administrative expenses
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Earnings	$ 3.4	$ 3.9	$ 5.6	$ 6.7