Goodwill and Intangible Assets (Schedule Of Intangible Assets Subject To Amortization) (Details) - USD ($) $ in Millions	Dec. 29, 2023	Sep. 29, 2023
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (463.5)	$ (570.0)
Total intangible assets, Gross Carrying Amount	1,625.9	1,792.1
Total intangible assets, Net Carrying Amount	$ 1,162.4	1,222.1
Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	3 years
Finite-Lived Intangible Assets, Gross	$ 80.4	75.8
Accumulated Amortization	(42.2)	(36.0)
Net Carrying Amount	38.2	39.8
In Process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	0.0	0.0
Indefinite-lived Intangible Assets (Excluding Goodwill)	$ 255.1	271.3
Developed Technology Rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	6 years 1 month 6 days
Finite-Lived Intangible Assets, Gross	$ 1,290.4	1,290.4
Accumulated Amortization	(421.3)	(379.4)
Net Carrying Amount	$ 869.1	$ 911.0