| **EMPLOYEE BENEFIT PLANS (Target Allocations and Weighted Average Asset Allocations) (Details) - Retirement Income Plans [Member]** | Jun. 30, 2019 | Jun. 30, 2018 |
|-------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                    |          |          |
| Target plan asset allocations                                                                                                       | 100.00%       | 100.00%       |
| Actual plan asset allocations                                                                                                       | 100.00%       | 100.00%       |
| US Equity [Member]                                                                                                                  |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                    |          |          |
| Target plan asset allocations                                                                                                       | 9.00%         | 11.00%        |
| Actual plan asset allocations                                                                                                       | 9.00%         | 11.00%        |
| International equity [Member]                                                                                                       |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                    |          |          |
| Target plan asset allocations                                                                                                       | 8.00%         | 12.00%        |
| Actual plan asset allocations                                                                                                       | 8.00%         | 12.00%        |
| Fixed Income Funds [Member]                                                                                                         |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                    |          |          |
| Target plan asset allocations                                                                                                       | 83.00%        | 74.00%        |
| Actual plan asset allocations                                                                                                       | 83.00%        | 74.00%        |
| Defined Benefit Plan, Real Estate [Member]                                                                                          |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                    |          |          |
| Target plan asset allocations                                                                                                       | 0.00%         | 3.00%         |
| Actual plan asset allocations                                                                                                       | 0.00%         | 3.00%         |

| X                                                                                                                                                                                                                                                                                                                                                                                                                             |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.
+ References
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| X                                                                                                                                       |
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