STOCK-BASED COMPENSATION PLANS - Inputs to Model the Value of Options Granted (Details) - Stock Appreciation Rights (SARs) And Employee Stock Option	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assumptions used in valuation
Risk-free interest rate, minimum (as a percent)			1.20%
Risk-free interest rate (as a percent)	2.60%	2.10%
Risk-free interest rate, maximum (as a percent)			1.90%
Expected years to exercise	5 years	5 years	5 years
Expected volatility, minimum (as a percent)			37.50%
Expected volatility (as a percent)	36.20%	37.00%
Expected volatility, maximum (as a percent)			42.10%
Annual dividend yield (as a percent)		2.00%	2.10%
Minimum
Assumptions used in valuation
Annual dividend yield (as a percent)	2.10%
Maximum
Assumptions used in valuation
Annual dividend yield (as a percent)	2.20%