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EQUITY AND NONCONTROLLING INTERESTS - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 13, 2019
Jun. 29, 2019
Jun. 30, 2018
Jun. 29, 2019
Jun. 30, 2018
Apr. 29, 2019
Citoxlab            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Ownership percentage           90.00%
Noncontrolling interest ownership percentage           10.00%
Vital River            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Additional equity interest percentage purchased (5.00%)          
Ownership percentage 92.00%          
Noncontrolling interest ownership percentage 8.00%          
Employee Stock Option            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Antidilutive securities excluded from computation of earnings per share amount (in shares)   0.4 0.5 0.4 0.5  
Restricted Stock and Restricted Stock Units            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Antidilutive securities excluded from computation of earnings per share amount (in shares)       1.0 1.1  
Citoxlab            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Contractually defined redemption value   $ 4.0   $ 4.0    
Vital River            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Purchase of additional equity interest $ 7.9          
Gain in equity equal to the excess fair value of additional equity interest purchase 0.8          
Contractually defined redemption value   $ 13.9   $ 13.9    
Vital River | Selling, general and administrative            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Charges equal to the excess fair value of hybrid equity instrument $ 2.2