STOCK-BASED COMPENSATION PLANS - Summary of 2015 Activity (Details)	12 Months Ended
	Dec. 31, 2015 $ / shares shares
Stock Grants and SARs
Exercised (in shares) | shares	0
SARs
Stock Grants and SARs
Outstanding at the beginning of the year (in shares) | shares	1,600,000
Granted (in shares) | shares	310,000
Outstanding at the end of the year (in shares) | shares	1,910,000
Weighted-Average Price
Outstanding at the beginning of the year (in dollars per share) | $ / shares	$ 15.08
Granted (in dollars per share) | $ / shares	24.93
Exercised (in dollars per share) | $ / shares	0.00
Outstanding at the end of the year (in dollars per share) | $ / shares	$ 16.68