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COMMITMENTS AND CONTINGENCIES - Narrative (Details) $ in Thousands				1 Months Ended	9 Months Ended
	Feb. 08, 2023 USD ($)	Oct. 24, 2022 USD ($)	Apr. 17, 2019 purchaser	Aug. 31, 2010 formerEmployee	Jul. 06, 2025 USD ($)	Sep. 29, 2024 USD ($)
Loss Contingencies [Line Items]
Accruals for legal matters					$ 18,800
Legal accruals					18,750	$ 16,220
Lease guarantee					$ 18,700
Qdoba guaranteed leases, remaining term					13 years
Jack in the Box
Loss Contingencies [Line Items]
Number of former employees | formerEmployee				5
Damages awarded		$ 6,400
Interest Expense, Interest-Bearing Liability					$ 9,900
J&D Restaurant Group v. Jack in the Box Inc.
Loss Contingencies [Line Items]
Damages awarded	$ 8,000
Number of perspective purchasers | purchaser			2

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