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SHAREHOLDERS' EQUITY - Additional Information (Details) - USD ($) | Jun. 30, 2017 | Jun. 30, 2016 | Jan. 31, 2016 | Sep. 30, 2015 | Apr. 30, 2015 | Apr. 30, 2007 | May 31, 2005 | Aug. 31, 2003 | May 31, 2000
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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 |  |  |  |  |  |  |
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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