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Common Stock (Schedule Of Number Of Shares, Net Of Treasury) (Details) - shares
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Common Stock [Abstract]      
Statement of changes in equity - common stock 56,716,620 57,118,925 56,568,425
Less: Non-vested equity shares that have not vested as of end of year (Note 16) 384,560 1,115,500 583,908
Number of shares, net of treasury excluding non-vested equity shares that have not vested 56,332,060 56,003,425 55,984,517