Debt (Schedule Of Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Debt [Abstract]
Long-term debt	$ 810,000	$ 1,080,000
Deferred borrowing costs		(1,389)
Long-term debt, net	810,000	1,078,611
Total debt	$ 810,000	$ 1,078,611