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Stockholders' Equity (Narrative) (Details) |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Nov. 30, 2017 USD ($) shares | Nov. 30, 2017 USD ($) shares | Jun. 30, 2020 USD ($) item $ / shares shares | Jun. 30, 2019 USD ($) $ / shares shares | Jun. 30, 2018 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 |  |  |  |  |  | 20,000,000.0 |
Cost of common shares repurchased | $ |  |  |  | $ 22,845,000 | $ 53,803,000 |  |
Total number of shares repurchased pursuant to the repurchase program | shares |  |  | 41,836,234 | 41,836,234 |  |  |
Total cost of shares repurchased pursuant to the repurchase program | $ |  |  | $ 1,623,256,000 | $ 1,623,256,000 |  |  |
Additional shares that can be repurchased under the approved share repurchase program | shares |  |  | 12,900,000 |  |  |  |
Preferred stock, shares authorized | shares |  |  | 2,000,000 | 2,000,000 |  |  | 2,000,000
Preferred stock at par value | $ / shares |  |  | $ 0.01 | $ 0.01 |  |  | $ 0.01
Preferred stock, shares issued | shares |  |  | 0 | 0 |  |  |
Preferred stock, shares outstanding | shares |  |  | 0 |  |  |  |
Expiration period |  |  | 7 years |  |  |  |
Reduction in the number of shares of common stock available for issuance |  |  | 2.8 |  |  |  |
Maximum number of shares subject to awards granted | shares |  |  | 3,000,000 |  |  |  |
Number of common stock shares granted in participant's initial year of hiring | shares |  |  | 4,500,000 |  |  |  |
Fair value of RSUs and PRSUs | $ |  |  | $ 56,800,000 | $ 52,300,000 | 34,600,000 |  |
Aggregate intrinsic value of the options exercised | $ |  |  | 31,200,000 | $ 15,100,000 | $ 27,500,000 |  |
Aggregate intrinsic value of the stock-based compensation arrangements outstanding | $ |  |  | 110,000,000.0 |  |  |  |
Aggregate intrinsic value of the stock-based compensation arrangements exercisable | $ |  |  | 77,400,000 |  |  |  |
Aggregate intrinsic value of the stock-based compensation arrangements exercisable, vested and expected to vest | $ |  |  | $ 108,500,000 |  |  |  |
Shares issued under Employee Stock Purchase Plan | shares |  |  | 265,000 | 285,000 | 302,000 |  |
Number of offerings for Employee Stock Purchase Plan | item |  |  | 2 |  |  |  |
Stock-based compensation expense | $ |  |  | $ 57,559,000 | $ 52,073,000 | $ 48,412,000 |  |
Unrecognized compensation costs related to unvested stock-based compensation arrangements | $ |  |  | $ 92,600,000 |  |  |  |
Expected weighted average period of unrecognized compensation costs related to unvested stock-based compensation arrangements |  |  | 2 years 2 months 12 days |  |  |  |
Treasury Stock [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Common shares repurchased under repurchase program | shares |  |  |  | 200,000 | 550,000 |  |
Cost of common shares repurchased | $ |  |  |  | $ 22,844,000 | $ 53,801,000 |  |
Total number of shares repurchased pursuant to the repurchase program | shares |  |  | 41,800,000 |  |  |  |
Total cost of shares repurchased pursuant to the repurchase program | $ |  |  | $ 1,600,000,000 |  |  |  |
Shares issued under Employee Stock Purchase Plan | shares |  |  |  |  |  |  |
2009 Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Extended period |  | 4 years |  |  |  |  |
Expiration date |  | Sep. 11, 2027 |  |  |  |  |
Common stock authorized for issuance | shares |  |  | 51,100,000 |  |  |  |
Common stock authorized for issuance and pending registration | shares | 7,400,000 | 7,400,000 |  |  |  |  |
Number of securities remaining available for future issuance | shares |  |  | 15,800,000 |  |  |  |
Amended And Restated 2009 Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Maximum amount payable pursant to cash denominated performance awards granted | $ | $ 3,000,000.0 | $ 5,000,000.0 |  |  |  |  |
Amended And Restated 2009 Plan [Member] | Non Employee Director [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Maximum award amount with other cash fees earned for services | $ |  | 700,000 |  |  |  |  |
Amended And Restated 2009 Plan [Member] | Board Of Directors Chairman [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Maximum award amount with other cash fees earned for services | $ |  | $ 1,200,000 |  |  |  |  |
Employee Stock Purchase Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of securities remaining available for future issuance | shares |  |  | 2,000,000.0 |  |  |  |
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% |  |  |  |
Stock-based compensation expense | $ |  |  | $ 8,000,000.0 | $ 6,400,000 | $ 5,200,000 |  |
Minimum [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  | 1 year |  |  |  |
Minimum [Member] | Employee Stock Purchase Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Employee stock purchase program offering period |  |  | 3 months |  |  |  |
Maximum [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  | 4 years |  |  |  |
Maximum [Member] | Employee Stock Purchase Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Employee stock purchase program offering period |  |  | 27 months |  |  |  |
Common stock shares subscribed | $ |  |  | $ 25,000 |  |  |  |
Performance Restricted Stock Units (PRSUs) [Member] |  |  |  |  |  |  |
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% |  |  |  |

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- Definition Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29,30) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29,30) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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