Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Total	Cumulative effect adjustment from adoption of the credit loss standard, net of tax	Common Stock	Additional ‎Paid-in Capital	Treasury Stock	Retained Earnings	Retained Earnings Cumulative effect adjustment from adoption of the credit loss standard, net of tax	Accumulated ‎Other ‎Comprehensive Income (Loss)
Common stock, shares outstanding, beginning balance (in shares) at Jun. 30, 2020			186,723,000
Beginning balance at Jun. 30, 2020	$ 2,497,027	$ (1,143)	$ 580	$ 1,570,694	$ (1,623,256)	$ 2,832,991	$ (1,143)	$ (283,982)
Treasury stock, common, beginning balance (in shares) at Jun. 30, 2020					(41,836,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued on exercise of options (note 10) (in shares)			64,000
Common stock issued on exercise of options (note 10)	3,954			3,954
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (note 11) (in shares)			469,000
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (note 11)	$ (50,207)		$ 2	(50,209)
Common stock issued on employee stock purchase plan (note 10) (in shares)	229,000		229,000
Common stock issued on employee stock purchase plan (note 10)	$ 33,834		$ 1	33,833
Stock-based compensation costs	63,927			63,927
Other comprehensive income (loss)	90,495							90,495
Net income	474,505					474,505
Dividends declared	(226,713)					(226,713)
Common stock, shares outstanding, ending balance (in shares) at Jun. 30, 2021			187,485,000
Ending balance at Jun. 30, 2021	2,885,679		$ 583	1,622,199	$ (1,623,256)	3,079,640		(193,487)
Treasury stock, common, ending balance (in shares) at Jun. 30, 2021					(41,836,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued on exercise of options (note 10) (in shares)			177,000
Common stock issued on exercise of options (note 10)	11,205			11,205
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (note 11) (in shares)			369,000
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (note 11)	$ (52,406)		$ 2	(52,408)
Common stock issued on employee stock purchase plan (note 10) (in shares)	216,000		216,000
Common stock issued on employee stock purchase plan (note 10)	$ 36,180		$ 1	36,179
Stock-based compensation costs	65,257			65,257
Other comprehensive income (loss)	(119,260)							(119,260)
Net income	779,437					779,437
Dividends declared	$ (245,341)					(245,341)
Common stock, shares outstanding, ending balance (in shares) at Jun. 30, 2022	146,410,721		188,247,000
Ending balance at Jun. 30, 2022	$ 3,360,751		$ 586	1,682,432	$ (1,623,256)	3,613,736		(312,747)
Treasury stock, common, ending balance (in shares) at Jun. 30, 2022	(41,836,234)				(41,836,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued on exercise of options (note 10) (in shares)	157,000		157,000
Common stock issued on exercise of options (note 10)	$ 9,696			9,696
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (note 11) (in shares)			277,000
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (note 11)	$ (30,631)		$ 1	(30,632)
Common stock issued on employee stock purchase plan (note 10) (in shares)	220,000		220,000
Common stock issued on employee stock purchase plan (note 10)	$ 39,446		$ 1	39,445
Stock-based compensation costs	71,142			71,142
Other comprehensive income (loss)	40,219							40,219
Net income	897,556					897,556
Dividends declared	$ (258,276)					(258,276)
Common stock, shares outstanding, ending balance (in shares) at Jun. 30, 2023	147,064,349		188,901,000
Ending balance at Jun. 30, 2023	$ 4,129,903		$ 588	$ 1,772,083	$ (1,623,256)	$ 4,253,016		$ (272,528)
Treasury stock, common, ending balance (in shares) at Jun. 30, 2023	(41,836,234)				(41,836,000)