Basis of Presentation (Details) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 25, 2018 USD ($) restaurant	Feb. 26, 2017 USD ($)	Feb. 25, 2018 USD ($) restaurant	Feb. 26, 2017 USD ($)	May 28, 2017 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Reclassification of tax effect | $	$ (15.4)	$ 0.0	$ (15.4)	$ 0.0
Accumulated Other Comprehensive Income (Loss)
Summary Of Significant Accounting Policies [Line Items]
Reclassification of tax effect | $	$ (15.4)		$ (15.4)
Accounting Standards Update 2015-17
Summary Of Significant Accounting Policies [Line Items]
Reclassification of deferred tax asset | $					$ 211.8
Latin America, the Middle East and Malaysia
Summary Of Significant Accounting Policies [Line Items]
Number of restaurants | restaurant	34		34
Entity Operated Units
Summary Of Significant Accounting Policies [Line Items]
Number of restaurants | restaurant	3		3
Franchised Units
Summary Of Significant Accounting Policies [Line Items]
Number of restaurants | restaurant	35		35