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Earning Per Common Share
12 Months Ended
Dec. 31, 2011
Earnings Per Common Share [Abstract]  
Earning Per Common Share

Note 17. Earnings Per Common Share

Basic net income attributable to Trinity Industries, Inc. per common share is computed by dividing net income attributable to Trinity remaining after allocation to unvested restricted shares by the weighted average number of basic common shares outstanding for the period. Except when the effect would be antidilutive, the calculation of diluted net income attributable to Trinity per common share includes the net impact of unvested restricted shares and shares that could be issued under outstanding stock options. Total weighted average restricted shares and antidilutive stock options were 3.0 million shares, 2.8 million shares, and 3.7 million shares, respectively, for the years ended December 31, 2011, 2010 and 2009, respectively.

The computation of basic and diluted net income (loss) attributable to Trinity Industries, Inc. is as follows:

 

 

                         
    Year Ended December 31, 2011  
    Income
(Loss)
    Avg. Shares
Outstanding
    Earnings
Per Share
 
    (in millions, except per share amounts)  

Net income attributable to Trinity Industries, Inc.

  $ 142.2                  

Unvested restricted share participation

    (4.8                
   

 

 

                 

Net income attributable to Trinity Industries, Inc. — basic

    137.4       77.5     $ 1.77  
                   

 

 

 

Effect of dilutive securities:

                       

Stock options

          0.3          
   

 

 

   

 

 

         

Net income attributable to Trinity Industries, Inc. — diluted

  $ 137.4       77.8     $ 1.77  
   

 

 

   

 

 

   

 

 

 

 

                         
    Year Ended December 31, 2010  
    Income
(Loss)
    Avg. Shares
Outstanding
    Earnings
Per Share
 
    (in millions, except per share amounts)  

Net income attributable to Trinity Industries, Inc.

  $ 67.4                  

Unvested restricted share participation

    (2.3                
   

 

 

                 

Net income attributable to Trinity Industries, Inc. — basic

    65.1       76.8     $ 0.85  
                   

 

 

 

Effect of dilutive securities:

                       

Stock options

          0.2          
   

 

 

   

 

 

         

Net income attributable to Trinity Industries, Inc. — diluted

  $ 65.1       77.0     $ 0.85  
   

 

 

   

 

 

   

 

 

 

 

                         
    Year Ended December 31, 2009  
    Income (Loss)     Avg. Shares
Outstanding
    Loss
Per Share
 
    (in millions, except per share amounts)  

Net loss attributable to Trinity Industries, Inc.

  $ (137.7                

Unvested restricted share participation

    (1.0                
   

 

 

                 

Net loss attributable to Trinity Industries, Inc. — basic

    (138.7     76.4     $ (1.81
                   

 

 

 

Effect of dilutive securities:

                       

Stock options

                   
   

 

 

   

 

 

         

Net loss attributable to Trinity Industries, Inc. — diluted

  $ (138.7     76.4     $ (1.81