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CREDIT FACILITIES AND LONG-TERM DEBT (Tables)
3 Months Ended
Mar. 31, 2012
CREDIT FACILITIES AND LONG-TERM DEBT  
Components of debt
 
(unaudited)
 
March 31,
   
December 31,
 
(millions of dollars)
 
2012
   
2011
 
             
Senior Credit Facility due 2016
    328       363  
4.65% Senior Notes due 2021
    349       349  
6.89% Series C Senior Notes due 2012
    3       3  
3.82% Series D Senior Notes due 2017
    27       27  
      707       742  
Less: current portion of long-term debt
    3       3  
      704       739  

Principal repayments required on long-term debt
 
(unaudited)
     
(millions of dollars)
     
2012
    3  
2013
    3  
2014
    4  
2015
    4  
2016
    332  
Thereafter
    361  
      707