Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 28, 2025	Mar. 29, 2024	Mar. 28, 2025	Mar. 29, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, period increase (decrease)	$ 0.0		$ 0.0
Goodwill, impairment loss	0.0		0.0
Finite-Lived Intangible Assets [Line Items]
Asset impairment charges	0.0	$ 0.0	0.0	$ 16.1
Completed and transferred in-process research and development	$ 24.7	$ 55.7	$ 24.7	$ 55.7
Finite-lived intangible assets, useful life	8 years	8 years	8 years	8 years
Amortization of intangible assets	$ 45.6	$ 45.5	$ 94.0	$ 93.6
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Asset impairment charges	$ 0.0	$ 0.0	$ 0.0	$ 16.1