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Related Party Transactions (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 26, 2025 | Sep. 27, 2024 | Sep. 29, 2023
Related Party Transaction [Line Items] |  |  |
Operating expenses | $ 924,039,000 | $ 874,899,000 | $ 931,425,000
Distribution to controlling interest | $ (1,847,000) | (5,164,000) | (266,000)
Dolby Properties Burbank, LLC |  |  |
Related Party Transaction [Line Items] |  |  |
Ownership interest (percent) | 49.00% |  |
Distribution to controlling interest | $ (250,000) | $ (262,000) | $ (266,000)
Dolby Properties, LP |  |  |
Related Party Transaction [Line Items] |  |  |
Ownership interest (percent) | 10.00% |  |

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