Goodwill and Intangible Assets, Intangible Assets Excluding Goodwill (Details) - USD ($) $ in Millions	9 Months Ended
	Jun. 27, 2025	Sep. 27, 2024
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (712.8)	$ (589.5)
Total intangible assets, gross carrying amount	1,565.0	1,490.0
Total intangible assets, net carrying amount	$ 852.2	900.5
Developed technology and other
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period (years)	6 years 4 months 24 days
Finite-lived intangible assets, gross	$ 1,388.6	1,379.6
Accumulated amortization	(640.6)	(540.7)
Net carrying amount	$ 748.0	838.9
Technology licenses
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period (years)	3 years 1 month 6 days
Finite-lived intangible assets, gross	$ 165.7	75.0
Accumulated amortization	(72.2)	(48.8)
Net carrying amount	93.5	26.2
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross	10.7	35.4
Accumulated amortization	0.0	0.0
Net carrying amount	$ 10.7	$ 35.4