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SHARE CAPITAL, OPTION PLANS AND SHARE-BASED PAYMENTS - Additional Information (Details) - USD ($)
12 Months Ended
Nov. 12, 2021
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Nov. 05, 2020
Cash Dividends          
Dividends declared per common share (in dollars per share)   $ 0.7770 $ 0.6984 $ 0.6300  
Payments of dividends   $ 210,662,000 $ 188,712,000 $ 168,859,000  
Share Capital          
Preference shares issued (in shares)   0      
Treasury Stock          
Purchase of treasury stock (in shares)   1,455,088 300,000 726,059  
Payments for repurchase of common stock   $ 64,800,000 $ 12,400,000 $ 26,500,000  
Issuance of treasury stock (in shares)   509,721 480,574 613,524  
Stock Repurchase Plan          
Stock repurchase plan, shares acquired (in shares)   1,455,088 300,000 726,059  
Share Repurchase Plan          
Treasury Stock          
Purchase of treasury stock (in shares)   2,500,000      
Payments for repurchase of common stock   $ 119,100,000      
Stock Repurchase Plan          
Stock repurchase plan, authorized amount         $ 350,000,000
Stock repurchase plan, shares retired (in shares)   2,500,000      
Stock repurchase plan, shares acquired (in shares)   2,500,000      
Share Repurchase Plan | Forecast          
Stock Repurchase Plan          
Stock repurchase plan, period in force 12 months