REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 16, 2023	Apr. 17, 2022	Apr. 16, 2023	Apr. 17, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 395,744	$ 322,294	$ 922,840	$ 667,005
Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	274,832	259,337	641,749	604,048
Del Taco
Disaggregation of Revenue [Line Items]
Revenues	120,912	62,957	281,091	62,957
Company restaurant sales
Disaggregation of Revenue [Line Items]
Revenues	202,604	151,309	472,795	271,365
Company restaurant sales | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	95,489	94,250	221,631	214,306
Company restaurant sales | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	107,115	57,059	251,164	57,059
Franchise rental revenues
Disaggregation of Revenue [Line Items]
Revenues	83,520	76,556	192,350	179,655
Franchise rental revenues | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	80,910	75,692	187,006	178,791
Franchise rental revenues | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	2,610	864	5,344	864
Franchise royalties
Disaggregation of Revenue [Line Items]
Revenues	52,058	45,578	126,561	103,226
Franchise royalties | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	46,401	42,933	113,970	100,581
Franchise royalties | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	5,657	2,645	12,591	2,645
Marketing fees
Disaggregation of Revenue [Line Items]
Revenues	51,095	43,548	117,093	99,349
Marketing fees | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	46,486	41,390	106,830	97,191
Marketing fees | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	4,609	2,158	10,263	2,158
Technology and sourcing fees
Disaggregation of Revenue [Line Items]
Revenues	4,543	3,780	10,230	8,780
Technology and sourcing fees | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	3,875	3,575	8,844	8,575
Technology and sourcing fees | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	668	205	1,386	205
Franchise fees and other services
Disaggregation of Revenue [Line Items]
Revenues	1,924	1,523	3,811	4,630
Franchise fees and other services | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	1,671	1,497	3,468	4,604
Franchise fees and other services | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	$ 253	$ 26	$ 343	$ 26