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EMPLOYEE BENEFIT PLANS - Target and Weighted-average Asset Allocations (Details) - Pension Plans - United States
Jun. 30, 2020
Jun. 30, 2019
Equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Target percentage of plan assets 40.00%  
Actual percentage of plan assets 35.00% 41.00%
Fixed income securities    
Defined Benefit Plan Disclosure [Line Items]    
Target percentage of plan assets 50.00%  
Actual percentage of plan assets 38.00% 42.00%
Cash and cash equivalents    
Defined Benefit Plan Disclosure [Line Items]    
Target percentage of plan assets 10.00%  
Actual percentage of plan assets 27.00% 17.00%