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STOCK-BASED COMPENSATION PLANS, Activity in Long-Term Incentive Program (Details) - Stock Options [Member] - $ / shares
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Options, Outstanding [Roll Forward]    
Outstanding, beginning of period (in shares) 1,969,301 2,151,776
Granted (in shares) 330,383 293,242
Exercised (in shares) (525,298) (469,730)
Forfeited (in shares) (18,394) (5,987)
Outstanding, end of period (in shares) 1,755,992 1,969,301
Exercisable, end of period (in shares) 959,638  
Weighted-average exercise price of shares [Abstract]    
Outstanding, beginning of period (in dollars per share) $ 28.15 $ 25.92
Granted (in dollars per share) 38.02 35.36
Exercised (in dollars per share) 25.12 22.42
Forfeited (in dollars per share) 34.47 30.21
Outstanding, end of period (in dollars per share) 30.85 $ 28.15
Exercisable, end of period (in dollars per share) $ 26.94