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EMPLOYEE BENEFIT PLANS Assumptions 2 (Details)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Pension Plan [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Discount rate 3.50% 3.90%  
Discount rate 3.90% 4.20% 4.10%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets 6.40% 6.40% 6.40%
Rate of compensation increase 3.75% 4.00% 4.00%
Supplemental Employee Retirement Plan [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Discount rate 3.50% 3.90%  
Discount rate 3.90% 4.20% 4.10%
Rate of compensation increase 3.75% 4.00% 4.00%