Income Taxes (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
	Jul. 01, 2024	Jun. 29, 2025	Dec. 29, 2024	Jun. 30, 2024	Jun. 29, 2025	Jun. 30, 2024	Sep. 29, 2024
Income Tax Disclosure [Abstract]
Effective tax rate					40.90%	27.70%
Reduction in income tax expense due to excess tax benefits on share-based payments					$ 1,000	$ 2,900
Impairment of goodwill	$ 0	$ 0		$ 0	92,416	0
Nondeductible expense, impairment losses, amount					58,300
Legal fees		0	$ 115,000	$ 0	115,000	0
Nondeductible expense, legal contingency charge, amount					$ 31,300
Income tax expense, nonoperating						$ 4,300
Effective tax rates, excluding valuation allowance release, non-deductible goodwill impairment charge, transaction costs, and excess tax benefits on share-based payments					27.60%	27.20%
Liability for uncertain tax positions		$ 52,300			$ 52,300		$ 50,100