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Other Long-Term Liabilities (Tables)
 12 Months Ended
Dec. 31, 2017
Other Liabilities Disclosure [Abstract]  
Particulars of Other Long-Term Liabilities

Other long-term liabilities consist of:

 

     2017      2016  

Long-term portion of fair value of hedges [note 21]

    $ 17      $ 61  

Long-term portion of income taxes payable

      225        181  

Asset retirement obligation

      34        28  

Long-term lease inducements

      15        16  

Deferred revenue

      13        12  
  

 

 

     

 

 

  
   $ 304      $ 298