XML 133 R95.htm IDEA: XBRL DOCUMENT v3.10.0.1
Summary of Accumulated Other Comprehensive Income (Detail) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance $ 131,610  
Other comprehensive income (loss) 30,404 $ (24,846)
Ending Balance 162,014 131,610
Unrealized Foreign Currency Translation Gains (Losses) [member]    
Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance 440,733 587,278
Other comprehensive income (loss) 175,630 (146,545)
Ending Balance 616,363 440,733
Foreign Exchange Gain (Loss) on Net Investment Hedge [member]    
Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance (309,123) (430,822)
Other comprehensive income (loss) (145,226) 121,699
Ending Balance (454,349) (309,123)
Accumulated Other Comprehensive Income [Member]    
Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance 131,610 156,456
Other comprehensive income (loss) 30,404 (24,846)
Ending Balance $ 162,014 $ 131,610