REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	4 Months Ended
	Jan. 22, 2023	Jan. 23, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 527,096	$ 344,711
Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	366,917	344,711
Del Taco
Disaggregation of Revenue [Line Items]
Revenues	160,179	0
Company restaurant sales
Disaggregation of Revenue [Line Items]
Revenues	270,191	120,056
Company restaurant sales | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	126,142	120,056
Company restaurant sales | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	144,049	0
Franchise rental revenues
Disaggregation of Revenue [Line Items]
Revenues	108,830	103,099
Franchise rental revenues | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	106,096	103,099
Franchise rental revenues | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	2,734	0
Franchise royalties
Disaggregation of Revenue [Line Items]
Revenues	74,503	57,648
Franchise royalties | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	67,569	57,648
Franchise royalties | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	6,934	0
Marketing fees
Disaggregation of Revenue [Line Items]
Revenues	65,998	55,801
Marketing fees | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	60,344	55,801
Marketing fees | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	5,654	0
Technology and sourcing fees
Disaggregation of Revenue [Line Items]
Revenues	5,687	5,000
Technology and sourcing fees | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	4,969	5,000
Technology and sourcing fees | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	718	0
Franchise fees and other services
Disaggregation of Revenue [Line Items]
Revenues	1,887	3,107
Franchise fees and other services | Jack in the Box
Disaggregation of Revenue [Line Items]
Revenues	1,797	3,107
Franchise fees and other services | Del Taco
Disaggregation of Revenue [Line Items]
Revenues	$ 90	$ 0