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SHAREHOLDERS' EQUITY - Additional Information (Details) - USD ($) | 12 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2016 | Jan. 31, 2016 | Sep. 30, 2015 | Jun. 30, 2015 | Apr. 30, 2015 | Apr. 30, 2007 | May 31, 2005 | Aug. 31, 2003 | May 31, 2000
Authorized Shares and Designation of Preferred Class: |  |  |  |  |  |  |  |  |
Common stock authorized (in shares) | 100,000,000 |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ 0.05 |  |  | $ 0.05 |  |  |  |  |
Preferred stock authorized (in shares) | 250,000 |  |  |  |  |  |  |  |
Preferred stock issued (in shares) | 0 |  |  |  |  |  |  |  |
Shareholders' Rights Plan: |  |  |  |  |  |  |  |  |
Number of preferred share purchase rights held by shareholders for each share of common stock owned (in shares) | 1 |  |  |  |  |  |  |  |
Percentage of ownership of outstanding common stock by a person to group to trigger preferred stock purchase rights | 20.00% |  |  |  |  |  |  |  |
Number of shares of preferred stock that a holder is entitled to purchase, if the rights become exercisable (in shares) | 0.001 |  |  |  |  |  |  |  |
Exercise price share of Series A junior participating preferred stock (in dollars per share) | $ 140,000 |  |  |  |  |  |  |  |
Share Repurchase Program: |  |  |  |  |  |  |  |  |
Authorized stock repurchase amount |  | $ 450,000,000.0 | $ 400,000,000.0 |  | $ 350,000,000.0 | $ 300,000,000.0 | $ 200,000,000.0 | $ 100,000,000.0 | $ 50,000,000.0
Repurchases of common stock to date (in shares) | 18,400,000 |  |  |  |  |  |  |  |
Repurchases of common stock to date | $ 390,000,000 |  |  |  |  |  |  |  |
Remaining authorized repurchase amount | $ 60,000,000 |  |  |  |  |  |  |  |

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- Definition Number of preferred share purchase rights which shareholders hold for each share of common stock owned. + References No definition available. + Details
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- Definition Represents the exercise price of the preferred share purchase rights. + References No definition available. + Details
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- Definition Percentage of ownership of, tender offer for, or exchange offer for outstanding common stock of the entity by a person or group, without prior consent of the Board of Directors, upon which preferred stock purchase rights become exercisable. + References No definition available. + Details
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- Definition The number of shares of preferred stock that the holder of each preferred share purchase right is entitled to purchase, if the rights become exercisable. + References No definition available. + Details
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- Definition The accumulated number of shares that have been repurchased under a stock repurchase program to date. + References No definition available. + Details
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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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