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Interest Expense (Tables)
6 Months Ended
Jun. 30, 2012
Interest Expense  
Schedule of interest expense

 

 
  Three months ended
June 30,
  Six months ended
June 30,
 
 
  2012   2011   2012   2011  
 
  (in millions)
 

Interest on borrowings

  $ 28.1   $ 28.0   $ 56.1   $ 57.8  

Fees on financing agreements

    20.0     3.5     25.1     28.4  

Interest capitalized and other

    (2.8 )   (0.7 )   (5.0 )   (3.3 )
                   

 

  $ 45.3   $ 30.8   $ 76.2   $ 82.9