Income Taxes, Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 27, 2024	Sep. 29, 2023
Deferred tax assets:
Inventory	$ 44.5	$ 24.1
Accrued compensation and benefits	16.5	14.4
Product returns, allowances, and warranty	5.5	7.0
Share-based and other deferred compensation	25.3	24.5
Net operating loss carry forwards	6.4	12.2
Tax credits	165.7	155.7
Operating leases	46.1	45.6
R&D capitalization	170.4	95.3
Intangible assets	50.0	24.4
Other, net	4.8	6.8
Deferred tax assets	535.2	410.0
Less valuation allowance	(174.1)	(164.2)
Net deferred tax assets	361.1	245.8
Deferred tax liabilities:
Property, plant, and equipment	(22.5)	(18.3)
Operating leases	(47.0)	(44.3)
Net deferred tax liabilities	(69.5)	(62.6)
Total net deferred tax assets	291.6	183.2
Income Taxes [Line Items]
Deferred tax assets	303.5	192.3
Total net deferred tax assets	291.6	183.2
Other noncurrent assets
Income Taxes [Line Items]
Deferred tax assets	303.5	192.3
Other noncurrent liabilities
Income Taxes [Line Items]
Deferred tax liabilities	$ (11.9)	$ (9.1)