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Other Retirement Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 28, 2025	Sep. 29, 2024	Sep. 24, 2023
Multiemployer Plan [Line Items]
Defined contribution retirement plan costs	$ 2.7	$ 3.1	$ 3.5
Multiemployer plans, withdrawal obligation, period (year)	20 years
Other Noncurrent Liabilities
Multiemployer Plan [Line Items]
Withdrawal liabilities	$ 22.4	$ 23.6

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