Introduction and Basis of Presentation (Details)	Sep. 26, 2018 restaurant
Franchisor Disclosure [Line Items]
Number of restaurants	1,715
Franchised/licensed restaurants [Member]
Franchisor Disclosure [Line Items]
Number of restaurants	1,534
Company restaurants [Member]
Franchisor Disclosure [Line Items]
Number of restaurants	181

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