Debt (Schedule Of Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
Debt [Abstract]
Short-term debt	$ 12,000	$ 12,000
Deferred borrowing costs	(12)	(13)
Short-term debt, net	11,988	11,987
Long-term debt	1,048,000	1,168,000
Deferred borrowing costs	(3,565)	(3,867)
Long-term debt, net	1,044,435	1,164,133
Total debt	$ 1,056,423	$ 1,176,120