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FINANCIAL INSTRUMENTS (Details) - Share swap transaction agreement - Not Designated as Hedging Instrument
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
shares
Sep. 30, 2019
USD ($)
Sep. 30, 2020
USD ($)
shares
Sep. 30, 2019
USD ($)
Derivative        
Derivative cancellable written notice term     30 days  
Derivative notional amount (in shares) | shares 280,000   280,000  
Selling, general, and administrative expenses        
Derivative        
Gain on derivative | $ $ 1.8 $ 0.0 $ 0.3 $ 1.0