Common Stock (Schedule Of Number Of Shares, Net Of Treasury) (Details) - shares	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Number of shares, net of treasury:
Statement of changes in equity - common stock	57,118,925	56,568,425	56,685,925
Less: Non-vested equity shares that have not vested as of end of year (Note 18)	1,115,500	583,908	765,411
Number of shares, net of treasury excluding non-vested equity shares that have not vested	56,003,425	55,984,517	55,920,514