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Commitments and Contingencies (Additional Information) (Details) |  |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 08, 2023 USD ($) | Oct. 24, 2022 USD ($) | Jun. 04, 2022 USD ($) | Apr. 17, 2019 restaurants | Aug. 31, 2010 formerEmployee | Sep. 29, 2024 USD ($) | Oct. 01, 2023 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Legal accruals |  |  |  |  |  | $ 16,220,000 | $ 40,877,000
Lease guarantee |  |  |  |  |  | $ 20,100,000 |
Qdoba guaranteed leases, remaining term |  |  |  |  |  | 13 years |
Coca-Cola and Dr. Pepper Purchase Commitments |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Unconditional purchase obligations |  |  |  |  |  | $ 89,900,000 |
Unrecorded purchase obligation period |  |  |  |  |  | 6 years |
Vendors Providing Information Technology Services |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Unconditional purchase obligations |  |  |  |  |  | $ 10,600,000 |
Unrecorded purchase obligation period |  |  |  |  |  | 4 years |
Information technology services, early contract termination fees |  |  |  |  |  | $ 0 |
Gessele v. Jack in the Box Inc. |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Number of former employees who instituted litigation | formerEmployee |  |  |  |  | 5 |  |
Loss contingency, damages awarded, value |  | $ 6,400,000 |  |  |  |  |
Interest Expense, Interest-Bearing Liability |  | $ 9,300,000 |  |  |  |  |
Torrez v. Jack in the Box | Settled Litigation |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Legal accruals |  |  |  |  |  | 0 |
Loss contingency, damages awarded, value |  |  | $ 50,000,000 |  |  |  |
J&D Restaurant Group v. Jack in the Box Inc. |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Loss contingency, damages awarded, value | $ 8,000,000 |  |  |  |  |  |
Number of perspective purchasers | restaurants |  |  |  | 2 |  |  |
Loss contingency accrued amount |  |  |  |  |  | $ 0 |

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