Introduction and Basis of Presentation (Details)	Mar. 31, 2021 restaurant
Franchisor Disclosure [Line Items]
Number of restaurants	1,649
Franchised/licensed Restaurants
Franchisor Disclosure [Line Items]
Number of restaurants	1,584
Company Restaurants
Franchisor Disclosure [Line Items]
Number of restaurants	65

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_FranchisorDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration