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Net Income Per Share (Tables)
 3 Months Ended
Mar. 31, 2012
Net Income Per Share  
Schedule of Net Income Per Share
   
Three Months Ended March 31,
 
   
2012
    
2011
  
   
(millions)
  
Numerator:
            
Net income (loss)    
   $ (28.8 )   $ (16.6 )
Net interest expense on convertible notes and convertible preferred stock dividends (a)
  
(b)
    
(b)
  
Net income (loss) if-converted          
   $ (28.8 )   $ (16.6 )
                 
Denominator:
                
Weighted average common shares            
     123.1       121.4  
Less: Weighted average unvested restricted stock
     0.8       1.8  
Denominator for basic calculation            
     122.3       119.6  
                 
Weighted average effect of dilutive securities:
                
Stock compensation awards      
     -       6.2  
Convertible notes              
     44.3       44.9  
Convertible preferred stock:
                
Equivalent common shares (c)            
     75.6       13.6  
Less: share issuance limitation (d)          
     52.8       -  
Net allowable common shares                  
     22.8       13.6  
Subtotal                                                                         
     67.1       64.7  
Less: shares excluded in a period of a net loss 
     67.1       64.7  
Weighted average effect of dilutive securities  
     -       -  
Denominator for diluted calculation     
     122.3       119.6  
                 
Net income (loss) per share – basic               
   $ (.24 )   $ (.14 )
Net income (loss) per share – diluted             
   $ (.24 )   $ (.14 )
Schedule of Securities Excluded From Earnings Per Share
 
Three Months Ended March 31,
 
2012
2011
Options excluded from diluted earnings per share
2.9
1.5
Warrants excluded from diluted earnings per share
6.3
6.3
Exercise price of excluded options
$3.72 to
$5.52 to
 
$14.28
$14.28
Exercise price of excluded warrants
$7.50
$7.50