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EARNINGS PER SHARE (Share Repurchase Plan) (Details) - USD ($)
$ / shares in Units, $ in Millions
May 09, 2018
May 07, 2018
Feb. 08, 2018
May 23, 2018
Feb. 06, 2018
Accelerated Share Repurchases [Line Items]          
Share repurchase plan, amount authorized     100,000,000.0   260,000,000
Payment to bank     $ 100.0    
Shares repurchased (in shares)     1,200,000    
Repurchase price (in dollars per share)     $ 68.87    
Percent of notional amount of ASR     80.00%    
Subsequent Event          
Accelerated Share Repurchases [Line Items]          
Shares repurchased (in shares) 1,400,000 200,000      
Repurchase price (in dollars per share) $ 73.36        
Remaining authorized amount       $ 160.0