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SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2015
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS [Abstract]  
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS
(millions of dollars)
 
Description
 
Balance at
Beginning
of Period
  
Additions
Charged to
Costs,
Provisions
and
Expenses
  
Deductions (a)
  
Balance at
End of
Period
 
Year ended December 31, 2015
        
Valuation and qualifying accounts deducted from assets to which they apply:
        
Allowance for doubtful accounts
 
$
3.6
   
2.6
   
(1.8
)
  
4.4
 
                 
Year ended December 31, 2014
                
Valuation and qualifying accounts deducted from assets to which they apply:
                
Allowance for doubtful accounts
 
$
1.7
  
$
2.4
   
(0.5
)
  
3.6
 
                 
Year ended December 31, 2013
                
Valuation and qualifying accounts deducted from assets to which they apply:
                
Allowance for doubtful accounts
 
$
3.8
  
$
0.6
  
$
(2.7
)
  
1.7
 

(a)Includes impact of translation of foreign currencies.