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Goodwill And Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 13, 2025 | Jul. 07, 2024 | Sep. 28, 2025 | Sep. 29, 2024 | Oct. 01, 2023
Goodwill [Line Items] |  |  |  |  |
Goodwill impairment loss |  |  | $ 31,656 | $ 162,624 |
Operating restaurant impairment charges |  |  | 4,384 | 8,008 | $ 4,569
Trademark asset |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Operating restaurant impairment charges | $ 177,900 |  | 177,900 |  |
Del Taco |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill impairment loss | $ 25,300 | $ 162,600 | 31,656 | 162,624 |
Operating restaurant impairment charges |  |  | $ 2,400 | $ 2,600 | $ 4,400

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