Summary Of Significant Accounting Policies (Narrative) (Details) $ in Millions	12 Months Ended
	May 26, 2019 USD ($) restaurant	May 27, 2018 USD ($)	May 28, 2017 USD ($)	Aug. 25, 2019 USD ($)	May 28, 2018 USD ($)
Summary of Significant Accounting Policies [Line Items]
Future amortization expense, year one	$ 31.0
Future amortization expense, year two	31.0
Future amortization expense, year three	31.0
Future amortization expense, year four	31.0
Future amortization expense, year five	$ 31.0
Gift cards breakage redemption period	12 years
Aggregate cumulative translation losses	$ 1.0	$ 1.6
Foreign currency transaction losses (gains) realized	1.0	(1.2)	$ 0.8
Deferred revenues	428.5	415.8
Deferred franchise fees - non-current	$ 3.9
Accounting Standards Update 2014-09
Summary of Significant Accounting Policies [Line Items]
Deferred revenues					$ 1.2
Deferred franchise fees - non-current					2.1
Accounting Standards Update 2015-17
Summary of Significant Accounting Policies [Line Items]
Noncurrent deferred tax assets		$ 211.8
Minimum
Summary of Significant Accounting Policies [Line Items]
Renewal period of lease arrangements (years)	5 years
Maximum
Summary of Significant Accounting Policies [Line Items]
Renewal period of lease arrangements (years)	20 years
Capitalized Software | Minimum
Summary of Significant Accounting Policies [Line Items]
Finite lived intangible assets, useful life minimum (years)	3 years
Capitalized Software | Maximum
Summary of Significant Accounting Policies [Line Items]
Finite lived intangible assets, useful life minimum (years)	10 years
Definite-Lived Intangible Assets | Minimum
Summary of Significant Accounting Policies [Line Items]
Finite lived intangible assets, useful life minimum (years)	1 year
Definite-Lived Intangible Assets | Maximum
Summary of Significant Accounting Policies [Line Items]
Finite lived intangible assets, useful life minimum (years)	20 years
Building | Minimum
Summary of Significant Accounting Policies [Line Items]
Estimated useful life of property, plant and equipment, minimum	7 years
Building | Maximum
Summary of Significant Accounting Policies [Line Items]
Estimated useful life of property, plant and equipment, minimum	40 years
Equipment | Minimum
Summary of Significant Accounting Policies [Line Items]
Estimated useful life of property, plant and equipment, minimum	2 years
Equipment | Maximum
Summary of Significant Accounting Policies [Line Items]
Estimated useful life of property, plant and equipment, minimum	20 years
North America | Entity Operated Units
Summary of Significant Accounting Policies [Line Items]
Number of restaurants | restaurant	3
North America | Franchised Units
Summary of Significant Accounting Policies [Line Items]
Number of restaurants | restaurant	37
Latin America, the Middle East and Malaysia | Franchised Units
Summary of Significant Accounting Policies [Line Items]
Number of restaurants | restaurant	33
Franchise
Summary of Significant Accounting Policies [Line Items]
Revenue recognition term	10 years
Retained Earnings | Accounting Standards Update 2014-09
Summary of Significant Accounting Policies [Line Items]
Cumulative decrease effect of new accounting principle					(3.3)
Retained Earnings | Accounting Standards Update 2016-16
Summary of Significant Accounting Policies [Line Items]
Cumulative decrease effect of new accounting principle					$ (6.3)
Forecast | Accounting Standards Update 2016-02
Summary of Significant Accounting Policies [Line Items]
Lease liabilities				$ 4,500.0
Forecast | Minimum | Accounting Standards Update 2016-02
Summary of Significant Accounting Policies [Line Items]
Right-of-use assets				$ 4,000.0