EMPLOYEE BENEFITS (Fair Value of Plan Assets by Category) (Details) $ in Millions	Jun. 30, 2018 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Amount of defined benefit pension plan assets	$ 93.5
Fixed income
Defined Benefit Plan Disclosure [Line Items]
Amount of defined benefit pension plan assets	33.1
Equities
Defined Benefit Plan Disclosure [Line Items]
Amount of defined benefit pension plan assets	55.2
Other
Defined Benefit Plan Disclosure [Line Items]
Amount of defined benefit pension plan assets	$ 5.2