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CAPITAL STOCK (Details) - shares
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Cumulative preferred stock, shares outstanding (in shares) 0 0  
Balance at beginning of period, treasury stock (in shares) 47,630,511    
Exercise of stock options (in shares) 317,110 587,441 479,452
Balance at end of period, treasury stock (in shares) 50,854,905 47,630,511  
Shares retained after settlement of restricted stock units (in shares) 41,128 73,496  
Shares retained after settlement of performance share units (in shares) 6,765 9,971  
Outstanding Common Stock [Member]      
Balance at beginning of period, common stock (in shares) 62,028,708 67,432,041  
Exercise of stock options (in shares) 315,171 580,947  
Settlement of restricted stock units, net of 41,128 and 73,496 shares retained, respectively (in shares) 78,310 145,757  
Settlement of performance share units, net of 6,765 and 9,971 shares retained, respectively (in shares) 11,806 15,956  
Purchase of treasury shares (in shares) (3,629,681) (6,145,993)  
Balance at end of period, common stock (in shares) 58,804,314 62,028,708 67,432,041
Treasury Stock [Member]      
Balance at beginning of period, treasury stock (in shares) 47,630,511 42,227,178  
Exercise of stock options (in shares) (315,171) (580,947)  
Settlement of restricted stock units, net of 41,128 and 73,496 shares retained, respectively (in shares) (78,310) (145,757)  
Settlement of performance share units, net of 6,765 and 9,971 shares retained, respectively (in shares) (11,806) (15,956)  
Purchase of treasury shares (in shares) 3,629,681 6,145,993  
Balance at end of period, treasury stock (in shares) 50,854,905 47,630,511 42,227,178