Fair Value (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 02, 2026	Oct. 03, 2025	Sep. 27, 2024
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Asset impairment charges	$ 66.2	$ 0.0	$ 147.9
In-process research and development
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Asset impairment charges	2.8	$ 0.0	$ 146.7
Assets held for sale
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Asset impairment charges	25.7
Spare parts
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Asset impairment charges	$ 37.7