Consolidated Statements Of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Beginning balance at Jun. 30, 2013	$ 568	$ 1,025,064	$ (1,083,845)	$ 1,576,641	$ 92,088	$ 1,610,516
Beginning balance, shares at Jun. 30, 2013	174,039,000		(32,026,000)
Common stock issued on exercise of options (note 12)	$ 7	31,157				31,164
Common stock issued on exercise of options, shares (note 12)	1,681,000
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (note 12)	$ 3	(11,302)				(11,299)
Common stock issued on vesting of restricted stock units, net of shares withheld for tax, shares (note 12)	713,000
Common stock issued on employee stock purchase plan (note 12)	$ 1	13,052				13,053
Common stock issued on employee stock purchase plan, shares (note 12)	314,000
Treasury stock purchases	$ (18)		$ (208,065)			(208,083)
Treasury stock purchases, shares			(4,416,000)
Tax benefit from exercise of options		16,211				16,211
Stock-based compensation costs		43,462				43,462
Other comprehensive income					59,469	59,469
Net income				345,273		345,273
Dividends declared				(141,518)		(141,518)
Ending balance at Jun. 30, 2014	$ 561	1,117,644	$ (1,291,910)	1,780,396	151,557	1,758,248
Ending balance, shares at Jun. 30, 2014	176,747,000		(36,442,000)
Common stock issued on exercise of options (note 12)	$ 8	36,565				36,573
Common stock issued on exercise of options, shares (note 12)	1,954,000
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (note 12)	$ 3	(11,406)				(11,403)
Common stock issued on vesting of restricted stock units, net of shares withheld for tax, shares (note 12)	651,000
Common stock issued on employee stock purchase plan (note 12)	$ 1	13,412				13,413
Common stock issued on employee stock purchase plan, shares (note 12)	309,000
Treasury stock purchases	$ (11)		$ (152,644)			(152,655)
Treasury stock purchases, shares			(2,744,000)
Tax benefit from exercise of options		24,868				24,868
Stock-based compensation costs		47,712				47,712
Other comprehensive income					(325,073)	(325,073)
Net income				352,886		352,886
Dividends declared				(157,262)		(157,262)
Ending balance at Jun. 30, 2015	$ 562	1,228,795	$ (1,444,554)	1,976,020	(173,516)	1,587,307
Ending balance, shares at Jun. 30, 2015	179,661,000		(39,186,000)
Common stock issued on exercise of options (note 12)	$ 5	26,247				$ 26,252
Common stock issued on exercise of options, shares (note 12)	1,176,000					1,189,787	[1]
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (note 12)	$ 3	(12,388)				$ (12,386)
Common stock issued on vesting of restricted stock units, net of shares withheld for tax, shares (note 12)	619,000
Common stock issued on employee stock purchase plan (note 12)	$ 1	14,081				14,082
Common stock issued on employee stock purchase plan, shares (note 12)	291,000
Treasury stock purchases	$ (8)		$ (102,057)			(102,065)
Treasury stock purchases, shares			(1,900,000)
Stock-based compensation costs		46,503				46,503
Other comprehensive income					(49,142)	(49,142)
Net income				352,409		352,409
Dividends declared				(168,130)		(168,130)
Ending balance at Jun. 30, 2016	$ 563	$ 1,303,238	$ (1,546,611)	$ 2,160,299	$ (222,658)	$ 1,694,831
Ending balance, shares at Jun. 30, 2016	181,747,000		(41,086,000)

[1] Includes 13,747 shares netted for tax.