Goodwill and Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Apr. 01, 2022	Mar. 26, 2021	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Non-restructuring impairment charges	$ 0.0	$ 64.5
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	10,601.8		$ 10,601.8
Accumulated amortization	5,424.4		5,269.4
Intangible assets, net	5,293.4		5,448.4
Non-Amortizable intangible assets, gross	116.0		116.0
Non-restructuring impairment charges	0.0	64.5
Amortization of Intangible Assets	$ 155.1	$ 145.3
Loss from continuing operations	$ (1.42)	$ (1.70)
Trademarks
Schedule of Intangible Asset by Major Class [Line Items]
Non-Amortizable intangible assets, gross	$ 35.0		35.0
In-process Research and Development
Schedule of Intangible Asset by Major Class [Line Items]
Non-Amortizable intangible assets, gross	81.0		81.0
Completed Technology
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	10,404.0		10,404.0
Accumulated amortization	5,313.5		5,160.4
Trademarks
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	77.7		77.7
Accumulated amortization	27.8		26.9
Licensing Agreements [Member]
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	120.1		120.1
Accumulated amortization	83.1		82.1
Terlipressin [Member]
Schedule of Intangible Asset by Major Class [Line Items]
Intangible assets, net	81.0		$ 81.0
Amitiza [Member] | Change in Accounting Method Accounted for as Change in Estimate
Schedule of Intangible Asset by Major Class [Line Items]
Amortization of Intangible Assets	$ 12.4
Loss from continuing operations	$ 0.15