SUMMARY OF REFRANCHISINGS AND FRANCHISE ACQUISITIONS - Refranchisings (Details) $ in Thousands		3 Months Ended			9 Months Ended
		Jul. 09, 2023 USD ($) restaurant	Jul. 10, 2022 USD ($) restaurant		Jul. 09, 2023 USD ($) restaurant	Jul. 10, 2022 USD ($) restaurant
Franchisor Disclosure [Line Items]
Gains on the sale of company-operated restaurants	[1]	$ 540	$ 1,460		$ 9,155	$ 1,746
Operating restaurant impairment charges	[2]	4,395	1,653		4,395	1,653
Company operated
Franchisor Disclosure [Line Items]
Proceeds from the sale of company-operated restaurants		33,428	802	[3]	51,845	1,402	[3]
Broker commissions		(1,014)	0	[3]	(1,014)	0	[3]
Net assets sold (primarily property and equipment)		(6,705)	0	[3]	(10,798)	0	[3]
Goodwill related to the sale of company-operated restaurants		(14,194)	0	[3]	(21,503)	0	[3]
Franchise fees		(1,385)	0	[3]	(1,962)	0	[3]
Sublease liabilities, net		(3,580)	0	[3]	(4,777)	0	[3]
Lease termination		0	0	[3]	(393)	0	[3]
Other	[4]	(756)	0	[3]	(1,075)	258	[3]
Gains on the sale of company-operated restaurants		5,794	$ 802	[3]	10,323	$ 1,660	[3]
Operating restaurant impairment charges		$ 300			$ 300
Number of restaurants impaired | restaurant		2			2
Company operated | Jack in the Box
Franchisor Disclosure [Line Items]
Restaurants sold to Jack in the Box franchisees | restaurant		0	0	[3]	5	0	[3]
Company operated | Del Taco
Franchisor Disclosure [Line Items]
Restaurants sold to Jack in the Box franchisees | restaurant		50	0	[3]	66	0	[3]

[1] The 2023 year-to-date gains on disposition of property and equipment primarily relate to the sale of Jack in the Box restaurant properties to franchisees who were leasing the properties from us prior to the sale

[2] In 2023, restaurant impairment charges related to the impairment of under-performing Del Taco restaurants currently held for use, whereas in 2022, the charges related to the impairment of under-performing Jack in the Box company-operated restaurants currently held for use.

[3] Amounts in periods presented for 2022 primarily relate to additional proceeds received in connection with the extension of franchise and lease agreements from the sale of restaurants in prior years.

[4] The quarter and year-to-date amounts include $0.3 million relating to impairment on two restaurants that will be refranchised in the fourth quarter of 2023.