Income Taxes - Reconciliation of Effective Income Tax Rate to Federal Rate (Detail)	12 Months Ended
	Sep. 28, 2024	Sep. 30, 2023		Oct. 01, 2022
Income Tax Disclosure [Abstract]
Federal income tax rate	21.00%	21.00%		21.00%
State taxes, net of federal benefit	2.20%	5.80%	[1]	3.10%
Non-tax deductible impairments	8.80%	3.50%		0.00%
Foreign derived intangible income	(3.60%)	(4.30%)		(3.40%)
Income tax audits and reserves	(2.40%)	1.30%		2.70%
Tax rate differential on foreign income	(1.60%)	0.10%		4.30%
U.S. research and development credits	(1.10%)	(1.10%)		(0.60%)
Tax impact of equity awards	0.80%	2.10%		0.00%
Valuation Allowance	(0.60%)	(1.80%)		4.50%
Legislative Changes	0.00%	0.00%		1.70%
Other, including tax reserves and related interest	0.20%	2.30%		(0.50%)
Effective Income Tax Rate, Continuing Operations, Total	23.70%	28.90%		32.80%

[1] Fiscal 2023 includes an adjustment related to certain deferred state taxes