Stockholders' Equity (Narrative) (Details) $ / shares in Units, $ in Thousands		1 Months Ended	12 Months Ended
	Oct. 31, 2017 USD ($)	Nov. 30, 2017 USD ($) shares	Jun. 30, 2022 USD ($) offering $ / shares shares	Jun. 30, 2021 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) shares	Feb. 21, 2014 shares	Apr. 30, 1997 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be repurchased under repurchase program (shares) | shares						20,000,000
Additional shares that can be repurchased under the approved share repurchase program (shares) | shares			12,900,000
Preferred stock, shares authorized (shares) | shares			2,000,000	2,000,000			2,000,000
Preferred stock at par value (in dollars per share) | $ / shares			$ 0.01	$ 0.01			$ 0.01
Preferred stock, shares outstanding (shares) | shares			0
Preferred stock, shares issued (shares) | shares			0	0
Expiration period			7 years
Reduction in the number of shares of common stock available for issuance (shares)			2.8
Maximum number of shares subject to awards granted (shares) | shares			3,000,000
Number of common stock shares granted in participant's initial year of hiring (shares) | shares			4,500,000
Fair value of RSUs and PRSUs | $			$ 65,500	$ 59,600	$ 56,800
Aggregate intrinsic value of the options exercised | $			33,700	$ 8,900	$ 31,200
Aggregate intrinsic value of the stock-based compensation arrangements outstanding | $			93,500
Aggregate intrinsic value of the stock-based compensation arrangements exercisable | $			89,900
Aggregate intrinsic value of the stock-based compensation arrangements exercisable, vested and expected to vest | $			$ 93,400
Shares issued under Employee Stock Purchase Plan (shares) | shares			216,000	229,000	265,000
Stock-based compensation expense | $			$ 65,257	$ 63,927	$ 57,559
Unrecognized compensation costs related to unvested stock-based compensation arrangements | $			$ 104,000
Expected weighted average period of unrecognized compensation costs related to unvested stock-based compensation arrangements			2 years 2 months 12 days
Treasury Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares repurchased pursuant to the repurchase program (shares) | shares			41,800,000
Total cost of shares repurchased pursuant to the repurchase program | $			$ 1,600,000
2009 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized for issuance and pending registration (shares) | shares		7,400,000
Extended period		4 years
Common stock authorized for issuance (shares) | shares			51,100,000
Common stock reserved for future issuance (shares) | shares			15,300,000
Amended And Restated 2009 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum amount payable pursuant to cash denominated performance awards granted | $	$ 3,000	$ 5,000
Amended And Restated 2009 Plan | Non Employee Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum award amount with other cash fees earned for services | $		700
Amended And Restated 2009 Plan | Board Of Directors Chairman
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum award amount with other cash fees earned for services | $		$ 1,200
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance (shares) | shares			1,500,000
Percentage of purchase price of common stock lower than the fair market value of common stock on the date of grant			85.00%
Percentage of purchase price of common stock lower than the fair market value of common stock on the date of purchase			85.00%
Number of offerings | offering			2
Stock-based compensation expense | $			$ 11,000	$ 10,900	$ 8,000
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			1 year
Minimum | Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase program offering period			3 months
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
Maximum | Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase program offering period			27 months
Common stock shares subscribed | $			$ 25
Performance Restricted Stock Units (PRSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Maximum amount to be issued under award, percentage			225.00%