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SHARE-BASED AWARDS - Narrative (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
$ / shares
shares
Dec. 31, 2015
$ / shares
shares
Dec. 31, 2012
Program
shares
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares granted during period (in shares) 0 0    
Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 3 years      
Compensation not yet recognized | $ $ 4.7      
2012 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares reserved for issuance (in shares)     4,300,000  
Stock available for future issuance (in shares) 1,200,000      
Number of shares granted during period (in shares) 2,700,000      
Number of separate incentive compensation programs | Program     4  
Number of programs that generally award share based compensation | Program     3  
2012 Plan | Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Weighted average fair value (in dollars per share) | $ / shares $ 30.91      
2012 Plan | Time-based and market-based restricted stock units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Weighted average fair value (in dollars per share) | $ / shares $ 30.91 $ 40.85    
2012 Plan | Time-Based Vesting | Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 3 years      
2012 Plan | Cliff Vest after 2 Years | Market-Based Performance Share Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 2 years      
2012 Plan | Cliff Vest after 3 Years | Market-Based Performance Share Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 3 years      
2012 Plan, Discretionary Grant Program        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Minimum percentage of fair market value allowed for exercise price of stock options granted       100.00%
Vesting period     3 years  
Maximum contractual term of awards granted     10 years