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ACCELERATED SHARE REPURCHASE - Schedule of Accelerated Share Repurchases (Details) - USD ($)
$ / shares in Units, shares in Millions
1 Months Ended
Jun. 30, 2019
May 31, 2019
Jul. 31, 2018
Apr. 30, 2018
April 2018 Stock Repurchase Program        
Class of Stock [Line Items]        
Authorized repurchase amount       $ 400,000,000.0
Initial delivery of treasury stock (in shares)       2.5
Average cost per share of shares acquired (in dollars per share)       $ 127.36
Value of shares repurchased as percentage of contract       80.00%
July 2018 Stock Repurchase Program        
Class of Stock [Line Items]        
Initial delivery of treasury stock (in shares)     2.8  
Final price per share of repurchased shares (in dollars per share)     $ 142.37  
Initial Delivery of Shares Settled May 2019        
Class of Stock [Line Items]        
Authorized repurchase amount   $ 150,000,000.0    
Initial delivery of treasury stock (in shares)   0.7    
Average cost per share of shares acquired (in dollars per share)   $ 178.66    
Value of shares repurchased as percentage of contract   80.00%    
May 2019 Stock Repurchase Program        
Class of Stock [Line Items]        
Initial delivery of treasury stock (in shares)   0.8    
Final price per share of repurchased shares (in dollars per share)   $ 178.42    
Initial Delivery of Shares Settled June 2019        
Class of Stock [Line Items]        
Authorized repurchase amount   $ 100,000,000.0    
Initial delivery of treasury stock (in shares)   0.5    
Average cost per share of shares acquired (in dollars per share)   $ 170.02    
Value of shares repurchased as percentage of contract   80.00%    
June 2019 Stock Repurchase Program        
Class of Stock [Line Items]        
Initial delivery of treasury stock (in shares) 0.6      
Final price per share of repurchased shares (in dollars per share) $ 178.46