SHARE CAPITAL, OPTION PLANS AND SHARE-BASED PAYMENTS - Additional Information (Details) - USD ($)	12 Months Ended
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

Aggregate dividends declared during the period for each share of common stock outstanding.

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The cash outflow to reacquire common stock during the period.

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