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STOCKHOLDERS' DEFICIT (Details)
$ / shares in Units, $ in Millions
 3 Months Ended 5 Months Ended
Sep. 30, 2019
$ / shares
shares
Sep. 30, 2019
USD ($)
$ / shares
shares
Jun. 30, 2019
$ / shares
shares
May 07, 2019
USD ($)
Class A Common Stock        
Class of Stock [Line Items]        
Common stock, shares outstanding (in shares) | shares 62,679,061 62,679,061 61,938,157  
Common stock, par value (in dollars per share) | $ / shares $ 0.01 $ 0.01 $ 0.01  
Stock repurchase program, remaining number of shares authorized to be repurchased (in shares) | $       $ 300.0
Stock repurchased during period, shares | shares   1,100,000    
Treasury stock acquired, average cost per share (in dollars per share) | $ / shares   $ 33.76    
Stock repurchased during period, value | $   $ 35.6    
Voting rights, ratio of votes to shares held 1      
Class B Common Stock        
Class of Stock [Line Items]        
Common stock, shares outstanding (in shares) | shares 62,455,345 62,455,345 64,548,044  
Common stock, par value (in dollars per share) | $ / shares $ 0.000001 $ 0.000001 $ 0.000001  
Voting rights, ratio of votes to shares held 1