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Plant Turnaround Costs (Tables)
9 Months Ended
Sep. 30, 2012
Plant Turnaround Costs  
Summary of plant turnaround activity

 

 

 
  Nine months ended
September 30,
 
 
  2012   2011  
 
  (in millions)
 

Net capitalized turnaround costs:

             

Beginning balance

  $ 54.8   $ 66.8  

Additions

    29.2     5.9  

Depreciation

    (22.1 )   (21.0 )

Effect of exchange rate changes

    0.4     (0.6 )
           

Ending balance

  $ 62.3   $ 51.1