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Fair Value Measurements (Tables)
9 Months Ended
Sep. 28, 2014
Fair Value Disclosures [Abstract]  
Fair Value, Assets Measured on Recurring Basis
 
 
Fair Value Measurements on a Recurring Basis
As of Third Quarter-End 2014
Description
 
Total
 
Level 1
 
Level 2
 
Level 3
 
 
(In millions of dollars)
Money market funds
 
$
3.3

 
$
3.3

 
$

 
$

Available-for-sale investment
 
94.3

 
94.3

 

 

 
 
 
 
 
 
 
 
 
Total assets at fair value
 
$
97.6

 
$
97.6

 
$

 
$

 
 
Fair Value Measurements on a Recurring Basis
As of Year-End 2013
Description
 
Total
 
Level 1
 
Level 2
 
Level 3
 
 
(In millions of dollars)
Money market funds
 
$
2.9

 
$
2.9

 
$

 
$

Available-for-sale investment
 
80.7

 
80.7

 

 

 
 
 
 
 
 
 
 
 
Total assets at fair value
 
$
83.6

 
$
83.6

 
$

 
$