SUMMARY OF REFRANCHISINGS AND ASSETS HELD FOR SALE - Refranchisings (Details) $ in Thousands	3 Months Ended	9 Months Ended
Jul. 06, 2025 USD ($) restaurant	Jul. 07, 2024 USD ($) restaurant	Jul. 06, 2025 USD ($) restaurant	Jul. 07, 2024 USD ($) restaurant
Franchisor Disclosure [Line Items]
Gain (loss) on the sale of company-operated restaurants	$ (597)	$ (527)	$ (1,983)	$ (1,675)
Operating restaurant impairment charges	1,058	136	2,935	136
Del Taco
Franchisor Disclosure [Line Items]
Operating restaurant impairment charges		2,200
Company operated
Franchisor Disclosure [Line Items]
Proceeds from the sale of company-operated restaurants	0	178	5,712	2,168
Net assets sold (primarily property and equipment)	0	41	(1,827)	(567)
Goodwill related to the sale of company-operated restaurants	0	0	(461)	(105)
Franchise fees	0	0	(364)	(454)
Sublease liabilities, net	0	0	0	(140)
Lease termination	0	0	(217)	0
Other	(146)	(284)	(213)	(2,286)
Gain (loss) on the sale of company-operated restaurants	$ (146)	$ (65)	$ 2,630	$ (1,384)
Company operated \| Del Taco
Franchisor Disclosure [Line Items]
Refranchising agreements \| restaurant	0	0	13	13

Contingency Adjustments From Divestiture Of Businesses And Interests In Affiliates From Prior Years, Other Adjustments

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