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STOCK-BASED COMPENSATION - Schedule of Performance Cycles (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
3 year performance cycle, 2016      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
TSR Performance Relative to the Peer Group (1% Best)     78.00%
Payout as a Percent of the Base Award     0.00%
Number of Shares Distributed (less than) (in shares) 0.1   0.0
Cash Portion $ 2.2   $ 0.0
3 year performance cycle, 2017      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
TSR Performance Relative to the Peer Group (1% Best)   63.00%  
Payout as a Percent of the Base Award   49.00%  
Number of Shares Distributed (less than) (in shares)   0.1  
Cash Portion   $ 1.6