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STOCK-BASED COMPENSATION PLANS (Assumptions Utilized in the Valuation in Calculating the Compensation Expense for Stock Options Granted) (Details) - Employee Stock Option [Member]
12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected life 5 years 4 months 24 days 5 years 4 months 24 days 5 years 6 months
Weighted-average expected life 5 years 4 months 24 days 5 years 4 months 24 days 5 years 6 months
Expected volatility 18.70%    
Expected volatility, minimum   17.30% 15.70%
Expected volatility, maximum   20.20% 18.70%
Weighted-average volatility 18.70% 17.40% 15.70%
Weighted-average risk-free interest rate 1.70%    
Risk-free interest rate, minimum   2.50% 1.30%
Risk-free interest rate, maximum   3.00% 2.60%
Weighted-average risk-free interest rate 1.70% 2.90% 1.80%
Dividend yield 2.80%    
Dividend yield, minimum   2.50% 2.40%
Dividend yield, maximum   2.60% 3.00%
Weighted-average dividend yield 2.80% 2.60% 2.50%