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Interest Expense (Tables)
 6 Months Ended
Jun. 30, 2014
Interest Expense  
Schedule of interest expense

 

 

 
   Three months ended
June 30,		   Six months ended
June 30,		  
 
   2014   2013   2014   2013  
 
   (in millions)
  

Interest on borrowings

   $ 63.5   $ 35.0   $ 111.4   $ 63.0  

Fees on financing agreements

     2.4     4.0     5.9     7.5  

Interest on tax liabilities

     0.4     (0.4 )   1.9     11.7  

Interest capitalized and other

     (15.6 )   (6.3 )   (28.5 )   (10.8 )
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

 

   $ 50.7   $ 32.3   $ 90.7   $ 71.4  
                   
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