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Goodwill
9 Months Ended
Sep. 30, 2011
Goodwill [Abstract] 
Goodwill
Note 9. Goodwill
     Goodwill by segment is as follows:
                 
    September 30,   December 31,
    2011   2010
            (as reported)
    (in millions)
Rail Group
  $ 122.5     $ 122.5  
Construction Products Group
    90.7       62.4  
Energy Equipment Group
    10.9       10.9  
Railcar Leasing and Management Services Group
    1.8       1.8  
 
           
 
  $ 225.9     $ 197.6  
 
           
     The net increase in the Construction Products Group goodwill as of September 30, 2011 is due to 2011 acquisitions and divestitures.