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Goodwill and Intangible Assets - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 31, 2023
CAD ($)
Multiple
Dec. 31, 2022
CAD ($)
Multiple
Disclosure of detailed information about intangible assets [Line Items]    
Impairment loss recognised in profit or loss good will | $ $ 0 $ 0
Canada [member]    
Disclosure of detailed information about intangible assets [Line Items]    
Tax rate applied to cash flow projections 27.80% 27.50%
U.S. [member]    
Disclosure of detailed information about intangible assets [Line Items]    
Tax rate applied to cash flow projections 21.00% 21.00%
Japan [member    
Disclosure of detailed information about intangible assets [Line Items]    
Tax rate applied to cash flow projections 28.00% 28.00%
Bottom of range [Member]    
Disclosure of detailed information about intangible assets [Line Items]    
Price-to-earnings multiples 5.1 4.4
Growth rate used to extrapolate cash flow projections 0.00% 0.00%
After-tax discount rate applied to cash flow projections 10.00% 10.00%
Pre-tax discount rate applied to cash flow projections 12.50% 12.50%
Top of range [Member]    
Disclosure of detailed information about intangible assets [Line Items]    
Price-to-earnings multiples 12.7 11.6
Growth rate used to extrapolate cash flow projections 13.00% 9.00%
After-tax discount rate applied to cash flow projections 13.00% 12.00%
Pre-tax discount rate applied to cash flow projections 16.30% 15.00%