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Investment Securities (Tables)
12 Months Ended
Dec. 31, 2012
Schedule Of Current Investment Securities
     2012      2011  

Equity securities — current, at cost less impairments

   $ 150.4      $ 0.3  

Unrealized gains on equity securities

     17.5        0.1  

Unrealized losses on equity securities

     —          (0.1
  

 

 

    

 

 

 

Total investment securities — current

   $ 167.9      $ 0.3  
  

 

 

    

 

 

 
Schedule Of Net Investment Losses/(Gains)
     2012      2011     2010  

Net gains on sale of current investment securities

   $      $ (0.1   $ (4.9

Derivative fair value gains

                  (1.2

Net gains on sale of non-current investment securities

            (2.3     (7.9
  

 

 

    

 

 

   

 

 

 

Net investment gains on investment securities

            (2.4     (14.0

Impairment charges

     1.2               

Other

            (0.2     1.2  
  

 

 

    

 

 

   

 

 

 

Net investment (gains)/losses

   $ 1.2      $ (2.6   $ (12.8