Goodwill and Intangible Assets, Intangible Assets Excluding Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2024	Sep. 29, 2023
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (589.5)	$ (415.4)
Total intangible assets, gross carrying amount	1,490.0	1,637.5
Total intangible assets, net carrying amount	$ 900.5	1,222.1
Developed technology and other
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period (years)	6 years 3 months 18 days
Finite-lived intangible assets, gross	$ 1,379.6	1,290.4
Accumulated amortization	(540.7)	(379.4)
Net carrying amount	$ 838.9	911.0
Technology licenses
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period (years)	3 years 1 month 6 days
Finite-lived intangible assets, gross	$ 75.0	75.8
Accumulated amortization	(48.8)	(36.0)
Net carrying amount	26.2	39.8
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross	35.4	271.3
Accumulated amortization	0.0	0.0
Net carrying amount	$ 35.4	$ 271.3