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SHARE CAPITAL, OPTION PLANS AND SHARE-BASED PAYMENTS - Additional Information (Details) - USD ($)
 12 Months Ended
Jul. 31, 2024
Apr. 30, 2024
Nov. 04, 2021
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Cash Dividends            
Dividends declared per common share (in dollars per share)       $ 1.00 $ 0.9720 $ 0.8836
Payments of dividends       $ 267,362,000 $ 259,549,000 $ 237,655,000
Share Capital            
Preference shares issued (in shares)       0    
Treasury Stock            
Purchase of treasury stock (in shares)       1,400,000 521,136 2,630,000
Purchase of treasury stock       $ 53,085,000 $ 21,919,000 $ 111,593,000
Issuance of treasury stock (in shares)       1,800,395 691,181 491,244
Issuance of treasury stock       $ 0 $ (1,067,000) $ 0
Stock Repurchase Plan            
Stock repurchased and retired (in shares)         0 3,809,559
Stock repurchased and retired         $ 0 $ 177,000,000.0
Performance options granted (in shares)       2,148,780    
Aggregate intrinsic value of options exercised       $ 7,000,000.0 1,800,000 17,000,000.0
Cash proceeds from exercise of options granted       31,400,000 7,800,000 32,700,000
Tax benefit realized from exercise of options       $ 1,500,000 $ 300,000 $ 2,800,000
Subsequent event            
Cash Dividends            
Dividends declared per common share (in dollars per share) $ 0.2625          
Twenty Twenty Two Share Repurchase Plan            
Stock Repurchase Plan            
Stock repurchase plan, period in force (in months)     12 months      
Stock repurchase plan, authorized amount     $ 350,000,000      
Twenty Twenty Four Share Repurchase Plan            
Stock Repurchase Plan            
Stock repurchase plan, period in force (in months)   12 months        
Stock repurchase plan, authorized amount   $ 250,000,000        
Stock repurchased and retired (in shares)       5,073,913    
Stock repurchased and retired       $ 152,300,000    
Employee stock option            
Stock Repurchase Plan            
Expiration period of options, minimum term (in years)       7 years    
Expiration period of options, maximum term (in years)       10 years    
Performance stock options            
Stock Repurchase Plan            
Performance options granted (in shares)       0 1,000,000 0
Deferred Share Units (DSUs)            
Stock Repurchase Plan            
Shares issued (in shares)       0 30,273 0
Value of shares issued       $ 0 $ 1,100,000 $ 0
Minimum | Employee stock option            
Stock Repurchase Plan            
Award vesting period (in years)       4 years    
Maximum | Employee stock option            
Stock Repurchase Plan            
Award vesting period (in years)       5 years    
Long Term Incentive Plan            
Treasury Stock            
Issuance of treasury stock (in shares)       223,577    
Issuance of treasury stock       $ 10,700,000    
Stock Repurchase Plan            
Award vesting period (in years)       3 years