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Segment and Enterprise Reporting - Segment Information (Detail)
$ in Millions
 3 Months Ended 9 Months Ended
Oct. 01, 2022
USD ($)
Oct. 02, 2021
USD ($)
Oct. 01, 2022
USD ($)
segment
Oct. 02, 2021
USD ($)
Jan. 01, 2022
USD ($)
Segment Reporting [Abstract]          
Number of operating segments | segment     2    
Number of reportable segments | segment     2    
Segment Reporting Information [Line Items]          
Total revenue by segment $ 549.3 $ 307.4 $ 1,418.8 $ 911.6  
Gross profit: $ 282.5 $ 203.6 $ 745.4 $ 593.5  
Gross profit margin: 51.40% 66.20% 52.50% 65.10%  
Operating income (loss): $ 54.8 $ 67.6 $ 136.7 $ 198.4  
Interest income 0.5 0.2 1.0 0.7  
Interest expense (9.7) 0.0 (14.3) (0.2)  
Other expense (income), net 6.4 (0.2) 14.3 (1.2)  
Income before provision for income taxes 52.0 67.6 137.7 197.7  
Depreciation and amortization 22.9 9.2 56.6 26.4  
Total assets 3,056.4   3,056.4   $ 1,887.0
Operating Segments          
Segment Reporting Information [Line Items]          
Total revenue by segment 549.3 307.4 1,418.8 911.6  
Corporate overhead          
Segment Reporting Information [Line Items]          
Gross profit: $ 0.0 $ 0.0 $ 0.0 $ 0.0  
Gross profit margin: 0.00% 0.00% 0.00% 0.00%  
Operating income (loss): $ (14.2) $ 0.0 $ 0.0 $ 0.0  
Total assets 19.3   19.3   20.6
Segment Reconciling Items          
Segment Reporting Information [Line Items]          
Gross profit: $ (6.6) $ (0.8) $ (58.4) $ (6.1)  
Gross profit margin: (1.20%) (0.10%) (10.60%) (1.10%)  
Operating income (loss): $ (26.6) $ 0.0 $ 0.0 $ 0.0  
Total assets 0.0   0.0   0.0
Non-healthcare          
Segment Reporting Information [Line Items]          
Depreciation and amortization 13.9 0.0 29.5 0.0  
Non-healthcare | Operating Segments          
Segment Reporting Information [Line Items]          
Total revenue by segment 222.1 0.0 430.3 0.0  
Gross profit: $ 77.7 $ 0.0 $ 150.3 $ 0.0  
Gross profit margin: 35.00% 0.00% 34.90% 0.00%  
Operating income (loss): $ 14.7 $ 0.0 $ 0.0 $ 0.0  
Total assets 1,522.9   1,522.9   0.0
Healthcare          
Segment Reporting Information [Line Items]          
Depreciation and amortization 9.0 9.2 27.1 26.4  
Healthcare | Operating Segments          
Segment Reporting Information [Line Items]          
Total revenue by segment 327.2 307.4 988.5 911.6  
Gross profit: $ 211.4 $ 204.4 $ 653.5 $ 599.6  
Gross profit margin: 64.60% 66.50% 66.10% 65.80%  
Operating income (loss): $ 80.9 $ 0.0 $ 0.0 $ 0.0  
Total assets $ 1,514.2   $ 1,514.2   $ 1,866.4