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STOCK-BASED COMPENSATION Performance Awards (Details) - USD ($)
shares in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
3 year performance cycle, 2012    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
TSR Performance Relative to the Peer Group (1%Best)   30.00%
Payout as a Percent of the Base Award   157.00%
Number of Shares Distributed   0.4
Cash Portion   $ 9.9
3 year performance cycle, 2013    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
TSR Performance Relative to the Peer Group (1%Best) 27.00%  
Payout as a Percent of the Base Award 165.40%  
Number of Shares Distributed 0.4  
Cash Portion $ 8.5  
2 year performance cycle, 2013    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Two year Performance Cycle Payout As A Percent Of The Base Award   127.00%
Number of Shares Distributed   0.1
Cash Portion   $ 3.5
2 year performance cycle, 2014    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Two year Performance Cycle Payout As A Percent Of The Base Award 224.70%  
Number of Shares Distributed 0.2  
Cash Portion $ 6.7