EMPLOYEE BENEFITS (Allocation of Invested Plan Assets) (Details)	Jun. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Percentage of defined benefit pension plan assets	100.00%
Fixed income
Defined Benefit Plan Disclosure [Line Items]
Percentage of defined benefit pension plan assets	40.00%
Equities
Defined Benefit Plan Disclosure [Line Items]
Percentage of defined benefit pension plan assets	55.00%
Other
Defined Benefit Plan Disclosure [Line Items]
Percentage of defined benefit pension plan assets	5.00%