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Other Operating Expense (Income), Net (Narrative) (Details) $ in Thousands | 12 Months Ended
--- | ---
Sep. 29, 2024 USD ($) | Oct. 01, 2023 USD ($) | Oct. 02, 2022 USD ($) restaurant
Restructuring Cost and Reserve [Line Items] |  |  |
Operating restaurant impairment charges | $ 8,008 | $ 4,569 | $ 5,927
Jack in the Box |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Number of Restaurants | restaurant |  |  | 9
Jack in the Box | Jack In The Box Restaurants |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Operating restaurant impairment charges | 1,200 |  |
Jack in the Box | Jack In The Box Restaurants |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Operating restaurant impairment charges | 3,400 |  |
Del Taco |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Operating restaurant impairment charges | $ 2,600 | $ 4,400 |

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