EMPLOYEE BENEFITS - Schedule of Actuarial Assumptions (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Pension Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	4.22%	3.43%
Compensation/Progression Rate	3.50%	3.50%
Pension Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	4.45%	3.75%
Compensation/Progression Rate		4.00%
Other Postretirement Benefits Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	4.38%	3.55%
Other Postretirement Benefits Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	4.41%	3.70%
Pre-65 Plan | Other Postretirement Benefits Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Health Care Trend Rate, Percentage		3.50%
Pre-65 Plan | Other Postretirement Benefits Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Health Care Trend Rate, Percentage	6.75%
Post-65 Plan | Other Postretirement Benefits Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Health Care Trend Rate, Percentage	3.50%
Post-65 Plan | Other Postretirement Benefits Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Health Care Trend Rate, Percentage	5.00%