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Segmented Information - Summary Of Detailed Information About Geographical Areas (Parenthetical) (Detail) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of geographical areas [line items]      
Revenue From Government Grants $ 0 $ 16,400  
Goodwill 679,377 $ 566,270 $ 576,028
CANADA      
Disclosure of geographical areas [line items]      
Goodwill 40,400    
UNITED STATES      
Disclosure of geographical areas [line items]      
Goodwill $ 184,600