SEGMENT REPORTING - Schedule of Operating Segments (Details) - USD ($) $ in Thousands	4 Months Ended
	Jan. 19, 2025	Jan. 21, 2024
Segment Reporting Information [Line Items]
Revenues	$ 469,438	$ 487,498
Segment operating profit	97,244	101,784
Depreciation and amortization	18,270	18,473
Other operating expenses, net	3,519	5,170
Net COLI losses (gains)	1,391	(4,834)
(Gains) losses on the sale of company-operated restaurants	(2,806)	254
Amortization of favorable and unfavorable leases and subleases, net	2	124
Amortization of franchise tenant improvement allowances and other	1,655	1,511
Amortization of cloud-computing costs	1,002	1,606
Earnings from operations	74,211	79,480
Jack in the Box restaurant operations
Segment Reporting Information [Line Items]
Revenues	371,064	368,340
Segment operating profit	115,963	119,097
Del Taco
Segment Reporting Information [Line Items]
Revenues	98,374	119,158
Segment operating profit	9,326	12,763
Corporate Segment
Segment Reporting Information [Line Items]
Segment operating profit	$ (28,045)	$ (30,076)