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Debt
3 Months Ended
Mar. 31, 2012
Debt [Abstract]  
Debt
7.

Debt

Our debt consisted of the following (in millions):

 

                 
    March 31,
2012
    December 31,
2011
 

Short-term debt

               

Senior Credit Facility

  $ 141.8     $ 143.0  

Other short-term debt

    2.8       0.3  
   

 

 

   

 

 

 

Total short-term debt

  $ 144.6     $ 143.3  
   

 

 

   

 

 

 

Long-term debt

               

Senior Notes due 2014

  $ 250.0     $ 250.0  

Senior Notes due 2019

    500.0       500.0  

Senior Notes due 2021

    300.0       300.0  

Senior Notes due 2039

    500.0       500.0  

Debt discount

    (1.8     (1.8

Adjustment related to interest rate swaps

    24.6       27.8  
   

 

 

   

 

 

 

Total long-term debt

  $ 1,572.8     $ 1,576.0  
   

 

 

   

 

 

 

The estimated fair value of our Senior Notes as of March 31, 2012, based on quoted prices for the specific securities from transactions in over-the-counter markets (Level 2), was $1,674.1 million. The carrying value of the Senior Credit Facility approximates fair value, as the underlying instruments have variable interest rates at market value.