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OTHER LIABILITIES (Tables)
 12 Months Ended
Dec. 31, 2017
OTHER LIABILITIES  
Schedule of other liabilities

                                                                                                                                                                                    


December 31 (millions of dollars)

 
2017

 
2016

 

Regulatory liabilities

 
26

 
25

 

Other liabilities

 
3

 
3

 

 

 
29

 
28