EMPLOYEE BENEFIT PLANS Table 8 - Assumptions - Benefit Obligations (Details) |
Dec. 31, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Pension Plans (The Pension Plan, Excess Pension Plan and SERP) [Member] | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Discount rate | 3.72% | 4.33% |
| Rate of compensation increase | 3.51% | 3.51% |
| Other Postretirement Benefits Plan [Member] | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Discount rate | 3.82% | 4.49% |