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INCOME TAX - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Operating Loss Carryforwards [Line Items]      
Income tax expense (benefit) allocated to noncontrolling interest $ 8.5 $ 12.3 $ 10.6
Undistributed earnings of foreign subsidiary 32.3    
Unrecognized that would impact effective tax rate 35.1    
Foreign Tax Authority      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards 99.3    
Operating loss carryforwards not subject to expiration 2.3    
Domestic Tax Authority      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards subject to expiration 24.3    
Tax credit carryforwards $ 43.6