Segment Data (Schedule of Segment Reporting Information by Business Segment) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended			6 Months Ended
	Jul. 01, 2022	Jun. 16, 2022	Jun. 25, 2021		Jun. 16, 2022	Jun. 25, 2021
Net sales	$ 85.0	$ 383.7	$ 546.4		$ 874.6	$ 1,104.4
Operating Income (Loss)	(54.8)	(37.0)	10.9		(57.8)	(6.6)
Depreciation and amortization	(45.5)	(126.7)	(145.2)		(281.8)	(290.5)
Employee Benefits and Share-based Compensation	0.0	(0.5)	(2.4)		(1.7)	(6.0)
Restructuring and related charges, net	(1.1)	(2.8)	(6.7)		(9.6)	(7.8)
Non-restructuring impairment charges	0.0				0.0	(64.5)
Inventory Turns
Change in Estimate, Fresh-Start, Amount recognized	2.4
Specialty Generics
Net sales	26.8	136.0	164.9		287.5	314.5
Restructuring and related charges, net	0.0				(3.5)	0.0
Corporate, Non-Segment
Corporate and unallocated expenses	(0.9)	(15.4)	(25.7)	[1]	(48.2)	(48.3)	[1]
Depreciation and amortization	(48.4)	(144.6)	(168.1)		(321.8)	(337.7)
Restructuring and related charges, net	(1.1)	(2.8)	(6.1)		(9.6)	(6.5)
Separation Costs	(9.2)	(7.0)	(0.3)	[2]	(9.0)	(0.9)
Operating Segments
Operating Income (Loss)	4.8	133.3	213.5		332.5	457.3
Operating Segments | Specialty Brands
Net sales	58.2	247.7	381.5		587.1	789.9
Operating Income (Loss)	4.5	102.4	186.6		267.2	398.7
Operating Segments | Specialty Generics
Net sales	26.8	136.0	164.9		287.5	314.5
Operating Income (Loss)	$ 0.3	$ 30.9	$ 26.9		$ 65.3	$ 58.6

[1] Includes administration expenses and certain compensation, legal, environmental and other costs not charged to the Company's reportable segments.

[2] Represents costs included in selling, general and administrative expenses, primarily related to expenses incurred related to the Predecessor directors and officers' policy and severance for the former CEO of the Predecessor, in addition to professional fees and costs incurred as the Company explores potential sales of non-core assets to enable further deleveraging post-emergence.