PENSION AND OTHER POSTRETIREMENT BENEFITS - Assumptions Used (Details)	Dec. 31, 2018	Dec. 31, 2017
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.24%	3.50%
Domestic | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.25%	3.50%
Foreign | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.88%	3.30%
Rate of compensation increase	3.02%	3.02%