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OTHER LONG-TERM LIABILITIES
 12 Months Ended
Dec. 31, 2016
Deferred Costs, Noncurrent [Abstract]  
OTHER LONG-TERM LIABILITIES
OTHER LONG-TERM LIABILITIES
at December 31
2016

 
2015

(millions of Canadian $)
 
 
 
 
Fair value of derivative contracts (Note 24)
330

 
625

Employee post-retirement benefits (Note 23)
448

 
380

Asset retirement obligations
108

 
109

Guarantees (Note 27)
82

 
26

Other
215

 
120

 
1,183

 
1,260