Stock Repurchase Program (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Equity, Class of Treasury Stock
Remaining number of shares authorized to be repurchased (in shares)	5,900,000		5,900,000
Number of shares of common stock repurchased (in shares)	0	2,644,000	3,445,000	6,506,000
Total cost of repurchases	$ 0	$ 168,943	$ 175,743	$ 447,892
Other Current Liabilities
Equity, Class of Treasury Stock
Number of shares of common stock repurchased (in shares)				218,600
Total cost of repurchases				$ 12,900