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COMMITMENTS AND CONTINGENCIES - Litigation and Contingencies (Details)
$ in Millions
3 Months Ended 12 Months Ended
Apr. 22, 2019
USD ($)
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
case
Loss Contingencies [Line Items]      
Ongoing lawsuits | case     6
Damages awarded from other party $ 63.0    
Cash payments   $ 37.5  
Litigation settlement amount awarded $ 25.5   $ 25.5
Litigation settlement amount awarded, rate 4.00%    
Gain from settlement     63.0
Other Current Assets      
Loss Contingencies [Line Items]      
Litigation settlement amount awarded     8.5
Other Noncurrent Assets      
Loss Contingencies [Line Items]      
Litigation settlement amount awarded     $ 17.0