Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
Sep. 27, 2025 USD ($) segment	Sep. 28, 2024 USD ($)	Sep. 30, 2023 USD ($)
Product Warranty Liability [Line Items]
Impairment charges	$ 0	$ 0	$ 0
Advertising costs	42,800,000	55,800,000	43,900,000
Employer contribution	$ 7,800,000	$ 9,500,000	$ 9,500,000
Number of operating segments \| segment	1
Number of reportable segments \| segment	1
Term of option to extend	5 years
Weighted-average discount rate - operating leases	5.51%
Weighted-average remaining lease term (years) - operating leases	8 years 7 months 6 days
European Union \| Maximum
Product Warranty Liability [Line Items]
Product warranty obligation, term	2 years
European Union \| Minimum
Product Warranty Liability [Line Items]
Product warranty obligation, term	1 year
One vendor \| Supplier concentration risk \| Inventories
Product Warranty Liability [Line Items]
Concentration percentage	53.00%	60.00%	58.00%

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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