Business Combination (Business Combination, Goodwill Segment Allocation) (Details) - Del Taco - USD ($) $ in Thousands	12 Months Ended
Oct. 01, 2023	Oct. 02, 2022
Business Acquisition [Line Items]
Goodwill, acquired during period	$ 319,722	$ 319,722
Del Taco
Business Acquisition [Line Items]
Goodwill, acquired during period	230,722	230,722
Jack in the Box
Business Acquisition [Line Items]
Goodwill, acquired during period	$ 89,000	$ 89,000

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482548/350-20-55-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration