Debt (Schedule Of Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Debt [Abstract]
Short-term debt	$ 12,000	$ 12,012
Deferred borrowing costs	(16)	(20)
Short-term debt, net	11,984	11,992
Long-term debt	1,292,000	1,262,000
Deferred borrowing costs	(4,491)	(3,139)
Long-term debt, net	1,287,509	1,258,861
Total debt	$ 1,299,493	$ 1,270,853