Annual report pursuant to Section 13 and 15(d)

Investments (Tables)

v2.4.0.6
Investments (Tables)
12 Months Ended
Dec. 31, 2011
Investments [Abstract]  
Available for sale securities
The following is a summary of the Company's available-for-sale securities as of December 31, 2011:

 
(in millions)
 
Amortized
cost
   
Gross
unrealized
gains
   
Gross
 unrealized
 losses
 
Fair value
(net carrying
 amount)
                       
Agency Bonds
  $ 97.7     $ -     $ (0.1 )   $ 97.6
Corporate Bonds
    51.7       -       -       51.7
Commercial Paper
    19.5       -       -       19.5
U.S. Treasury Bills
    0.8       -       -       0.8
                               
Total available-for-sale securities
  $ 169.7     $ -     $ (0.1 )   $ 169.6

The following is a summary of the Company's available-for-sale securities as of December 31, 2010:

 
(in millions)
 
Amortized
cost
   
Gross
unrealized
 gains
   
Gross
 unrealized
 losses
   
Fair value
 (net carrying
 amount)
                       
Corporate Bonds
  $ 44.5     $ -     $ (0.1 )   $ 44.4
Agency Bonds
    31.0       -       -       31.0
Commercial Paper
    29.5       -       -       29.5
U.S. Treasury Bills
    0.8       -       -       0.8
                               
Total available-for-sale securities
  $ 105.8     $ -     $ (0.1 )   $ 105.7

The net carrying value and estimated fair value of debt securities at December 31, 2011, by contractual maturity, are shown below:

(in millions)
 
Amortized
 cost
   
Fair value
 (net carrying
 amount)
     
Available-for-sale debt securities:
   
Due in one year or less
  $ 76.7     $ 76.7
Due after one year through two years
    93.0       92.9
               
Total available-for-sale debt securities
  $ 169.7     $ 169.6
 
The net carrying value and estimated fair value of debt securities at December 31, 2010, by contractual maturity, are shown below:
 
(in millions)
 
Amortized
 cost
   
Fair value
 (net carrying
amount)
     
Available-for-sale debt securities:
   
Due in one year or less
  $ 84.8     $ 84.7
Due after one year through two years
    21.0       21.0
               
Total available-for-sale debt securities
  $ 105.8     $ 105.7