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Non-Operating Income and Deductions (Tables)
 12 Months Ended
Dec. 31, 2013
Non-Operating Income and Deductions [Abstract]  
Non-operating Income and Deductions
Millions of Dollars
Year Ended December 31,
 
 
 
2013
 
 
 
 
2012
 
 
 
 
2011
 
 
Interest income  
$
3.0
 
 
 
$
3.2
 
 
 
$
3.9
 
 
Interest expense  
 
(3.3
)
 
 
 
(3.2
)
 
 
 
(3.3
)
 
Foreign exchange losses  
 
(2.1
)
 
 
 
(1.4
)
 
 
 
(1.2
)
 
Foreign currency translation loss upon deconsolidation of a foreign entity
 
--
 
 
 
 
--
 
 
 
 
(1.4
 
)
 
Other deductions  
 
(0.8
)
 
 
 
(1.6
)
 
 
 
(0.6
)
Non-operating deductions, net  
$
(3.2
)
 
 
$
(3.0
)
 
 
$
(2.6
)