Acquisitions - Schedule of Estimated Contingent Consideration (Details) - Contingent Consideration - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 30, 2025	Mar. 31, 2024	Mar. 30, 2025	Mar. 31, 2024
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 46,160	$ 55,604	$ 48,746	$ 73,422
Estimated earn-out liabilities for acquisitions	5,516	21,900	5,516	21,900
Payments of contingent consideration	(19,000)	(3,250)	(21,865)	(22,112)
Adjustments to fair value recorded in earnings	(1,931)	14	(2,297)	(22)
Interest accretion expense	519	444	1,164	915
Effect of foreign currency exchange rate changes	6	(133)	6	476
Ending balance	$ 31,270	$ 74,579	$ 31,270	$ 74,579

Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations.

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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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Amount of gain (loss) recognized in other comprehensive income (OCI) from liability measured at fair value on recurring basis using unobservable input (level 3).

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Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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