Segment Data (Schedule of Segment Reporting Information by Business Segment) (Details) $ in Millions		3 Months Ended
		Mar. 28, 2025 USD ($) Defendent		Mar. 29, 2024 USD ($)
Net sales		$ 419.9		$ 467.8
Operating Income (Loss)		15.0		(17.7)
Restructuring charges, net		2.0		(10.2)
Separation Costs	[1]	(1.4)		(6.7)
Interest Expense		(32.8)		(59.1)
Interest income		5.8		6.8
Other (expense) income, net		(5.8)		3.7
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		$ (24.0)		(66.3)
Number of Reportable Segments | Defendent		2
Cost of sales		$ 217.0		303.8
Selling, general and administrative expenses		147.5		136.9
Research and development expenses		20.5	[2]	27.9
Depreciation and amortization		22.5		35.1
Specialty Brands
Net sales		207.3		257.3
Restructuring and related charges, net		2.0		(10.2)
Depreciation and amortization		12.1		22.4
Specialty Generics
Net sales		212.6		210.5
Depreciation and amortization		9.8		12.2
Corporate, Non-Segment
Cost of sales	[3]	3.1		2.0
Selling, general and administrative expenses	[3]	61.6		58.4
Research and development expenses	[3]	8.0		8.6
Operating Segments
Operating Income (Loss)		109.6		58.0
Restructuring charges, net		2.0		(10.2)
Cost of sales		213.9		301.8
Selling, general and administrative expenses		85.9		78.5
Research and development expenses		12.5		19.3
Operating Segments | Specialty Brands
Net sales		207.3		257.3
Operating Income (Loss)		50.6		32.1
Restructuring charges, net		2.0		(10.2)
Cost of sales		92.4		142.5
Selling, general and administrative expenses		59.0		59.1
Research and development expenses		7.3		13.4
Operating Segments | Specialty Generics
Net sales		212.6
Operating Income (Loss)		59.0		25.9
Restructuring charges, net		0.0		0.0
Cost of sales		121.5		159.3
Selling, general and administrative expenses		26.9		19.4
Research and development expenses		$ 5.2		$ 5.9

[1] Represents costs primarily related to professional fees incurred as the Company explored potential sales of non-core assets.

[2] Represents legal, financial, and other advisory and consulting expenses, which primarily relate to shareholder matters, integration planning, and regulatory costs associated with the proposed Business Combination. Refer to Note 3 for further information on the Business Combination.

[3] Includes certain compensation, information technology, legal, environmental and other costs not charged to the Company’s reportable segments.