v3.26.1
SEGMENT AND GEOGRAPHIC INFORMATION - Schedule of Segment Adjusted Operating Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 27, 2026
Jun. 28, 2025
Jun. 27, 2026
Jun. 28, 2025
Segment Reporting [Line Items]        
Net sales $ 1,022.8 $ 1,056.3 $ 1,992.0 $ 2,100.2
Cost of sales 708.9 693.4 1,352.6 1,345.0
Total operating expenses 290.5 317.5 988.3 662.9
Operating income (loss) 23.5 45.4 (348.9) 92.3
Impairment charges 1.0 1.5 331.8 4.6
Goodwill impairment charge     330.8  
Professional fees 3.4 2.8   5.3
Accelerated depreciation 15.4 4.5 18.9 4.5
Richard Bittner Business        
Segment Reporting [Line Items]        
Impairment charges       3.1
Goodwill impairment charge       1.2
Dermacosmetics Business        
Segment Reporting [Line Items]        
Professional fees     11.2  
Favorable hedging activities     3.1  
Prevacid        
Segment Reporting [Line Items]        
Impairment charges   1.5    
Operating Segments        
Segment Reporting [Line Items]        
Net sales 904.1 913.6 1,744.2 1,814.8
Operating income (loss) 130.5 148.0 247.0 313.5
Operating Segments | Self Care        
Segment Reporting [Line Items]        
Net sales 576.6 598.6 1,119.9 1,212.8
Cost of sales 402.3 397.1 763.5 785.4
Total operating expenses 95.6 107.6 209.2 220.7
Operating income (loss) 78.7 93.9 147.3 206.7
Goodwill impairment charge     0.0  
Operating Segments | Specialty Care        
Segment Reporting [Line Items]        
Net sales 226.6 233.1 433.6 432.2
Cost of sales 106.1 98.1 198.9 180.2
Total operating expenses 72.7 68.7 131.6 143.6
Operating income (loss) 47.8 66.3 103.2 108.4
Goodwill impairment charge     77.4  
Operating Segments | Infant Formula        
Segment Reporting [Line Items]        
Net sales 100.9 82.0 190.6 169.8
Cost of sales 80.2 71.2 159.2 126.4
Total operating expenses 16.8 23.0 34.8 45.0
Operating income (loss) 4.0 (12.2) (3.5) (1.6)
Goodwill impairment charge     66.3  
All Other        
Segment Reporting [Line Items]        
Net sales 118.6 142.7 247.8 285.4
Operating income (loss) 25.8 25.7 57.6 46.6
Goodwill impairment charge     187.2  
Unallocated | Unallocated expense        
Segment Reporting [Line Items]        
Operating income (loss) (31.8) (38.5) (67.2) (78.3)
Unallocated | Amortization expense related primarily to acquired intangible assets        
Segment Reporting [Line Items]        
Operating income (loss) (54.5) (56.8) (109.0) (111.8)
Unallocated | Impairment charges        
Segment Reporting [Line Items]        
Operating income (loss) (1.0) (1.5) (331.8) (4.6)
Unallocated | Infant formula remediation        
Segment Reporting [Line Items]        
Operating income (loss)       (0.9)
Unallocated | Restructuring charges and other termination benefits        
Segment Reporting [Line Items]        
Operating income (loss) (14.4) (8.7) (89.5) (38.1)
Unallocated | Unusual litigation        
Segment Reporting [Line Items]        
Operating income (loss) (12.4) (15.4) (28.9) (24.3)
Unallocated | Other        
Segment Reporting [Line Items]        
Operating income (loss) $ (18.8) $ (7.4) $ (27.0) $ (9.8)