Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION PLAN (Details 2)

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STOCK-BASED COMPENSATION PLAN (Details 2) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Nonvested shares
      
Weighted Average Grant-Date Fair Value      
Total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Stock Incentive Plan $ 21    
Weighted-average period over which cost is expected to be recognized 1 year 8 months 12 days    
Value of share awards vested $ 18 $ 21 $ 23
Equity Awards
      
Nonvested shares      
Nonvested at the beginning of the period (in shares) 1,789,000    
Granted (in shares) 803,000    
Vested (in shares) (753,000)    
Forfeited (in shares) (9,000)    
Nonvested at the end of the period (in shares) 1,830,000    
Weighted Average Grant-Date Fair Value      
Nonvested at the beginning of the period (in dollars per share) $ 13.87    
Granted (in dollars per share) $ 17.88    
Vested (in dollars per share) $ 14.61    
Forfeited (in dollars per share) $ 17.01    
Nonvested at the end of the period (in dollars per share) $ 15.31    
Liability Awards
      
Nonvested shares      
Nonvested at the beginning of the period (in shares) 638,000    
Granted (in shares) 270,000    
Vested (in shares) (314,000)    
Forfeited (in shares) (20,000)    
Nonvested at the end of the period (in shares) 574,000    
Weighted Average Grant-Date Fair Value      
Nonvested at the beginning of the period (in dollars per share) $ 14.50    
Granted (in dollars per share) $ 17.85    
Vested (in dollars per share) $ 14.57    
Forfeited (in dollars per share) $ 15.60    
Nonvested at the end of the period (in dollars per share) $ 16.03    
Restricted stock units
      
Nonvested shares      
Vested (in shares) (74,768)    
Weighted Average Grant-Date Fair Value      
The number of restricted stock units vested at the balance sheet date (in shares) 591,106