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SHAREHOLDERS' EQUITY SHAREHOLDERS' EQUITY, COMMON STOCK REPURCHASE (Details) (September 2012 Stock Repurchase Program [Member], USD $)
In Millions, except Share data, unless otherwise specified
1 Months Ended 3 Months Ended
Sep. 30, 2012
Mar. 31, 2014
Mar. 31, 2013
September 2012 Stock Repurchase Program [Member]
     
Class of Stock [Line Items]      
Stock Repurchase Program, Authorized Amount $ 250    
Stock Repurchased During Period, Shares   352,851 373,185
Stock Repurchased During Period, Value   $ 30 $ 19