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Capital Management (Tables)
 12 Months Ended
Dec. 31, 2018
Capital Management [Abstract]  
Summary of Capitalisation and Ratio As at December 31, 2018 and 2017, these ratios were as follows:

 

 

2018

 

 

2017

 

Long-term debt

 

$

1,706,253

 

 

$

1,730,437

 

Shareholders’ equity

 

 

1,557,752

 

 

 

1,810,336

 

Total capitalization

 

$

3,264,005

 

 

$

3,540,773

 

Long-term debt to long-term debt plus equity ratio

 

 

0.52

 

 

 

0.49