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Earning Per Common Share (Tables)
6 Months Ended
Jun. 30, 2011
Earning Per Common Share (Tables) [Abstract]  
Numerators and denominators used in the computations of basic and diluted earnings per common share
                                 
    Three Months Ended     Six Months Ended  
    June 30,     June 30,  
    2011     2010     2011     2010  
Numerator (basic and diluted):
                               
Net income (loss)
  $ 8     $ 3     $ (38 )   $ (4 )
Allocation to unvested restricted stock awards
    (1 )     (1 )     (2 )     (1 )
 
                       
Net income (loss) attributable to common shareholders
    7       2       (40 )     (5 )
 
                       
Net income (loss) available to common shareholders
  $ 7     $ 2     $ (40 )   $ (5 )
 
                       
Denominator:
                               
Basic common shares (based upon weighted average)
    348       348       348       349  
Add:
                               
Contingent common shares
                       
Stock option dilution
    1       1              
 
                       
Diluted common shares
    349       349       348       349