Goodwill and Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended		11 Months Ended	12 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Jun. 16, 2022	Nov. 14, 2023	Dec. 27, 2024	Nov. 29, 2024
Schedule of Intangible Asset by Major Class [Line Items]
Other Asset Impairment Charges	$ 2.6	$ 0.0	$ 0.0	$ 135.9	$ 0.0
Intangible asset amortization	16.2	318.7	281.8	449.6	80.3
Amortizable:
Asset Impairment Charges	3.8	0.0	0.0	179.9	0.0
Intangible Assets, Net (Excluding Goodwill)	608.4				419.4
Net sales	243.0	1,039.7	874.6	1,622.9	1,979.7
Specialty Brands [Member]
Schedule of Intangible Asset by Major Class [Line Items]
Other Asset Impairment Charges	2.6			50.1
Amortizable:
Net sales	139.8		587.1	949.2	1,083.4
Completed Technology
Amortizable:
Finite-lived intangible assets, gross	624.6				495.2
Accumulated amortization	16.2				$ 75.8
Acthar Gel
Amortizable:
Finite-lived intangible assets - useful lives					9 years
Intangible Assets, Net (Excluding Goodwill)					$ 86.3
Finite-Lived Intangible Assets, Amortization Method					Sum of the years digits
Therakos
Schedule of Intangible Asset by Major Class [Line Items]
Intangible asset amortization	$ 4.6	$ 102.7	$ 35.5	142.7	$ 16.1
Amortizable:
Finite-lived intangible assets, gross						$ 129.4
Accumulated amortization						20.7
Intangible Assets, Net (Excluding Goodwill)						$ 108.7
Inomax
Amortizable:
Finite-lived intangible assets - useful lives					7 years
Intangible Assets, Net (Excluding Goodwill)					$ 30.4
Finite-Lived Intangible Assets, Amortization Method					Sum of the years digits
StrataGraft [Member] | Specialty Brands [Member]
Schedule of Intangible Asset by Major Class [Line Items]
Other Asset Impairment Charges				$ 50.1
Generics
Amortizable:
Finite-lived intangible assets - useful lives					17 years
Intangible Assets, Net (Excluding Goodwill)					$ 175.1
Finite-Lived Intangible Assets, Amortization Method					Straight-line
APAP
Amortizable:
Finite-lived intangible assets - useful lives					19 years
Intangible Assets, Net (Excluding Goodwill)					$ 72.5
Finite-Lived Intangible Assets, Amortization Method					Straight-line
Terlivaz
Amortizable:
Finite-lived intangible assets - useful lives					4 years 6 months
Intangible Assets, Net (Excluding Goodwill)					$ 55.1
Finite-Lived Intangible Assets, Amortization Method					Straight-line