Basis of Presentation (Details) $ in Millions	Dec. 02, 2019 USD ($) restaurant	Jul. 29, 2019 USD ($) restaurant	Feb. 23, 2020 restaurant	May 27, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of restaurants	2	5
Business acquisition payment | $	$ 14.0	$ 37.8
Business acquisition land, buildings, and equipment payment | $	$ 7.0	$ 19.0
Operating Segments
Summary Of Significant Accounting Policies [Line Items]
Number of restaurants		4
Closed Segments
Summary Of Significant Accounting Policies [Line Items]
Number of restaurants		1
Accounting Standards Update 2016-02 | Retained Earnings
Summary Of Significant Accounting Policies [Line Items]
Cumulative increase effect of new accounting principle | $				$ 3.8
Latin America and the Middle East
Summary Of Significant Accounting Policies [Line Items]
Number of restaurants			32
Entity Operated Units
Summary Of Significant Accounting Policies [Line Items]
Number of restaurants			3
Franchised Units
Summary Of Significant Accounting Policies [Line Items]
Number of restaurants			31