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FAIR VALUE MEASUREMENTS (Tables)
12 Months Ended
Dec. 31, 2015
Fair Value Disclosures [Abstract]  
Assets Measured at Fair Value on Recurring Basis

The Company’s assets which are measured at fair value on a recurring basis as of December 31, 2015 and 2014 were determined using the inputs described above (in millions):

 

           Fair Value Measurements Using  
     Carrying
Value
    Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
    Significant Other
Observable
Inputs
(Level 2)
    Significant
Unobservable Inputs
(Level 3)
 

December 31, 2015:

        

Classified as current assets:

        

Cash and money market funds

   $ 69.5      $ 69.5      $      $   

Certificates of deposit

     9.1        9.1                 

Commercial paper

     24.0               24.0          

Securities of government-sponsored entities

     17.7               17.7          

Corporate debt securities

     259.0               259.0          
  

 

 

   

 

 

   

 

 

   

 

 

 

Subtotal

     379.3        78.6        300.7          

Classified as long-term assets:

        

Certificates of deposit

     5.7        5.7                 

Securities of government-sponsored entities

     12.5               12.5          

Corporate debt securities

     69.0               69.0          
  

 

 

   

 

 

   

 

 

   

 

 

 

Total

     466.5        84.3        382.2          

Less cash, cash equivalents and restricted cash

     (79.0     (74.2     (4.8       
  

 

 

   

 

 

   

 

 

   

 

 

 

Total investments

   $ 387.5      $ 10.1      $ 377.4      $   
  

 

 

   

 

 

   

 

 

   

 

 

 

December 31, 2014:

        

Classified as current assets:

        

Cash and money market funds

   $ 28.7      $ 28.7      $      $   

Certificates of deposit

     9.1        9.1                 

Commercial paper

     7.5               7.5          

Securities of government-sponsored entities

     1.5               1.5          

Corporate debt securities

     147.0               147.0          
  

 

 

   

 

 

   

 

 

   

 

 

 

Subtotal

     193.8        37.8        156.0          

Classified as long-term assets:

        

Certificates of deposit

     13.2        13.2                 

Corporate debt securities

     29.1               29.1          
  

 

 

   

 

 

   

 

 

   

 

 

 

Total

     236.1        51.0        185.1          

Less cash, cash equivalents and restricted cash

     (35.8     (33.5     (2.3       
  

 

 

   

 

 

   

 

 

   

 

 

 

Total investments

   $ 200.3      $ 17.5      $ 182.8      $