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SHARE CAPITAL, OPTION PLANS AND SHARE-BASED PAYMENTS - Additional Information (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Cash Dividends |  |  |
Dividends declared per common share (in dollars per share) | $ 0.6984 | $ 0.6300 | $ 0.5478
Payments of dividends | $ 188,712,000 | $ 168,859,000 | $ 145,613,000
Share Capital |  |  |
Preference shares issued | 0 |  |
Treasury Stock |  |  |
Purchase of treasury stock (in shares) | 300,000 | 726,059 | 0
Payments for repurchase of common stock | $ 12,424,000 | $ 26,499,000 | $ 0
Issuance of treasury stock (in shares) | 480,574 | 613,524 | 411,276

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