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SUBSEQUENT EVENT (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Feb. 29, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Subsequent Event [Line Items]        
Dividends declared (in dollars per share)   $ 0.48 $ 7.94 $ 1.85
Subsequent Event        
Subsequent Event [Line Items]        
Dividends declared (in dollars per share) $ 1.00      
Dividends payable $ 38.0