Consolidated Statement Of Stockholders' Equity (Unaudited) - 9 months ended Mar. 31, 2017 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Jun. 30, 2016	$ 1,664,514	$ 1,075	$ 1,123,206	$ 801,392	$ (89,048)	$ (172,111)
Balance, shares at Jun. 30, 2016	107,479	107,479			4,018
Stockholders' Equity [Roll Forward]
Net income	$ 67,117			67,117
Other comprehensive income (loss)	(68,760)					(68,760)
Issuance of common stock pursuant to stock based compensation plans	0	$ 5	1,994		$ (1,999)
Issuance of common stock pursuant to stock based compensation plans, shares		490			2
Stock-based compensation income tax effects	3,069		3,069
Shares withheld for payment of employee payroll taxes due on shares issued under stock based compensation plans	(7,936)				$ (7,936)
Shares withheld for payment of employee payroll taxes due on shares issued under stock based compensation plans, shares					259
Stock-based compensation expense	7,519		7,519
Balance at Mar. 31, 2017	$ 1,665,523	$ 1,080	$ 1,135,788	$ 868,509	$ (98,983)	$ (240,871)
Balance, shares at Mar. 31, 2017	107,969	107,969			4,279