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Stock-Based Compensation (Performance Units Grant Date Valuation Assumptions) (Details) - Performance Units [Member]
12 Months Ended
Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Risk-free interest rate 0.41%
Dividend yield 1.65%
Volatility factor of the expected market price of our common stock 31.30%