Fair Value Measurements (Carrying Value And Fair Value Of Long-Term Debt) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended		12 Months Ended
	Nov. 23, 2014	Nov. 29, 2015	Nov. 23, 2014	May. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of long-term debt		$ 1,200.0		$ 1,470.0
Fair value of long-term debt		1,310.0		1,570.0
Nonfinancial assets fair value disclosure		7.3
Restaurant impairments	$ 28.3	$ 7.3	$ 33.8
Impairment of long-lived assets held-for-use				55.4
Impairment of long-lived assets held-for-use, sale-leaseback assets				15.1
Fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Nonfinancial assets fair value disclosure				$ 70.5