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Other Operating Expense (Income), Net (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 28, 2025 | Sep. 29, 2024 | Oct. 01, 2023
Restructuring Cost and Reserve [Line Items] |  |  |
Operating restaurant impairment charges | $ 4,384 | $ 8,008 | $ 4,569
Jack in the Box |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Operating restaurant impairment charges | 1,900 | 5,400 |
Del Taco |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Operating restaurant impairment charges | $ 2,400 | $ 2,600 | $ 4,400

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