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EMPLOYEE BENEFIT PLANS (Target Allocations and Weighted Average Asset Allocations) (Details) - Retirement Income [Member]
Jun. 30, 2020
Jun. 30, 2019
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 5.00% 9.00%
Actual plan asset allocations 5.00% 9.00%
International equity [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Target plan asset allocations 5.00% 8.00%
Actual plan asset allocations 5.00% 8.00%
Fixed Income [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Target plan asset allocations 90.00% 83.00%
Actual plan asset allocations 90.00% 83.00%
Other [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Target plan asset allocations 0.00% 0.00%
Actual plan asset allocations 0.00% 0.00%