Treasury Stock (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Equity [Abstract]
Treasury Stock, Shares	25,660,212	24,208,517
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	4,330,000	5,782,000
Treasury Stock, Value	$ 1,006,274	$ 876,134
Treasury Stock, Shares, Acquired	1,452,000
Payments for Repurchase of Common Stock	$ 130,140	$ 175,662	$ 122,691