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Debt (Tables)
3 Months Ended
Mar. 31, 2012
Debt [Abstract]  
Long-term debt obligations , net of current maturities
The following table summarizes our long-term debt obligations, net of current maturities:

   
March 31,
  
December 31,
 
($ in millions)
 
2012
  
2011
 
Revolving credit facility, due 2014
 $35.4  $6.4 
Series A floating rate notes, due 2012
  50.0   50.0 
Series B floating rate notes, due 2015
  25.0   25.0 
Euro note A, due 2013
  27.1   26.3 
Euro note B, due 2016
  81.3   79.0 
Convertible debt, due 2047
  161.5   161.5 
Term loan, due 2014
  0.2   0.2 
Capital leases, due through 2016
  0.9   1.0 
    381.4   349.4 
Less: current portion of long-term debt
  (86.5)  (50.1)
   $294.9  $299.3