Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 28, 2024	Mar. 29, 2024	Oct. 03, 2025	Sep. 27, 2024	Sep. 29, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, ending balance			$ 2,176.7	$ 2,176.7
Goodwill, impairment loss			0.0
Finite-Lived Intangible Assets [Line Items]
Asset impairment charges			0.0	147.9	$ 64.5
Completed and transferred in-process research and development	$ 33.4	$ 55.7	$ 32.6	89.1
Finite-lived intangible assets, useful life	12 years	8 years	8 years
Amortization of intangible assets			$ 184.3	186.5	225.9
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Asset impairment charges			$ 0.0	$ 146.7	$ 0.0