Goodwill and Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Sep. 30, 2022	Jun. 16, 2022	Sep. 29, 2023	Dec. 30, 2022
Schedule of Intangible Asset by Major Class [Line Items]
Intangible assets, net	$ 2,319.8				$ 2,319.8	$ 2,843.8
Amortization of Intangible Assets	$ 125.6	$ 182.1	$ 136.6	$ 281.8	$ 388.1
Loss from continuing operations	$ (128.61)	$ (26.44)	$ (21.61)	$ (3.70)	$ (205.37)
Non-restructuring impairment charges	$ 135.9	$ 0.0	$ 0.0	$ 0.0	$ 135.9
Specialty Generics IPR&D assets
Schedule of Intangible Asset by Major Class [Line Items]
Non-restructuring impairment charges	85.8
StrataGraft
Schedule of Intangible Asset by Major Class [Line Items]
Non-restructuring impairment charges	50.1
Specialty Generics, Other assets
Schedule of Intangible Asset by Major Class [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	26.0				26.0
In-process Research and Development
Schedule of Intangible Asset by Major Class [Line Items]
Non-Amortizable intangible assets, gross	9.5				9.5	121.3
Completed Technology
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	3,010.4				3,010.4	3,041.2
Accumulated amortization	$ 700.1				$ 700.1	$ 318.7