EMPLOYEE BENEFIT PLANS - Schedule of Assumptions Used (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Weighted Average Assumptions Used in Calculating Benefit Obligation
Discount rate	2.80%	2.50%
Inflation	3.20%	3.10%
Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost (Credit)
Discount rate	2.50%	2.70%
Expected long-term return on plan assets	4.70%	4.50%
Inflation	3.10%	3.30%