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Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended						4 Months Ended		12 Months Ended
	Sep. 29, 2019	Jul. 07, 2019	Apr. 14, 2019	Sep. 30, 2018	Jul. 08, 2018	Apr. 15, 2018	Jan. 20, 2019	Jan. 21, 2018	Sep. 29, 2019	Sep. 30, 2018	Oct. 01, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 221,235	$ 222,359	$ 215,727	$ 177,472	$ 187,983	$ 209,772	$ 290,786	$ 294,463	$ 950,107	$ 869,690	$ 1,097,291
Company restaurant sales
Disaggregation of Revenue [Line Items]
Revenues									336,807	448,058	715,921
Franchise rental revenues
Disaggregation of Revenue [Line Items]
Revenues									272,815	$ 259,047	$ 231,578
Franchise royalties
Disaggregation of Revenue [Line Items]
Revenues									163,047
Marketing fees
Disaggregation of Revenue [Line Items]
Revenues									157,969
Technology and sourcing fees
Disaggregation of Revenue [Line Items]
Revenues									12,705
Franchise fees and other services
Disaggregation of Revenue [Line Items]
Revenues									$ 6,764

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+ References

No definition available.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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