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COMMON STOCK - Narrative (Details)
$ / shares in Units, $ in Millions
2 Months Ended 12 Months Ended
Aug. 18, 2021
$ / shares
Apr. 30, 2021
$ / shares
Feb. 04, 2021
$ / shares
Oct. 30, 2020
$ / shares
Aug. 19, 2020
$ / shares
Aug. 20, 2021
USD ($)
shares
Jun. 30, 2021
vote
$ / shares
shares
Jun. 30, 2020
$ / shares
shares
Jun. 30, 2019
$ / shares
Class of Stock                  
Common stock, par value (in dollars per share)             $ 0.01 $ 0.01  
Cash dividends declared per common share (in dollars per share)             $ 2.07 $ 1.39 $ 1.67
Common Class A                  
Class of Stock                  
Common stock, shares authorized | shares             1,300,000,000 1,300,000,000  
Common stock, par value (in dollars per share)             $ 0.01    
Common stock, votes per share | vote             1    
Remaining authorized share repurchase balance (in shares) | shares             32,700,000    
Cash dividends declared per common share (in dollars per share)   $ 0.53 $ 0.53 $ 0.53 $ 0.48        
Common Class A | Subsequent Event                  
Class of Stock                  
Stock repurchased during period (in shares) | shares           800,000      
Stock repurchased during period | $           $ 244      
Cash dividends declared per common share (in dollars per share) $ 0.53                
Common Class B                  
Class of Stock                  
Common stock, shares authorized | shares             304,000,000 304,000,000  
Common stock, par value (in dollars per share)             $ 0.01    
Common stock, votes per share | vote             10    
Cash dividends declared per common share (in dollars per share)   $ 0.53 $ 0.53 $ 0.53 $ 0.48        
Common Class B | Subsequent Event                  
Class of Stock                  
Cash dividends declared per common share (in dollars per share) $ 0.53