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STOCKHOLDERS' EQUITY - Share Repurchases and Dividends (Details) - USD ($)
3 Months Ended 23 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2016
Jul. 12, 2018
Feb. 07, 2018
Sep. 06, 2017
May 30, 2017
Feb. 28, 2017
Feb. 17, 2015
Stockholders' Equity Note [Abstract]                  
Stock repurchase program, authorized amount       $ 300,000,000 $ 325,000,000 $ 225,000,000 $ 280,000,000 $ 350,000,000 $ 200,000,000
Stock repurchased during period, shares 0                
Stock repurchased during period, value     $ 131,000,000            
Treasury stock acquired (in shares)   5,100,000              
Treasury stock acquired, cost method $ 300,000 $ 209,500,000              
Dividends declared (in dollars per share)   $ 0.11