Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 30, 2022
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	147.9	64.5	$ 20.7
Completed and transferred in-process research and development	89.1
Amortization of intangible assets	186.5	225.9	288.4
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Asset impairment charges	146.7	$ 0.0	$ 20.7
In-process research and development - 12 years
Finite-Lived Intangible Assets [Line Items]
Completed and transferred in-process research and development	$ 33.4
Finite-lived intangible assets, useful life	12 years
In-process research and development - 8 years
Finite-Lived Intangible Assets [Line Items]
Completed and transferred in-process research and development	$ 55.7
Finite-lived intangible assets, useful life	8 years