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Income Taxes - Summary of Effective Income Tax for Continuing Operations From Statutory Canadian Tax Rates (Details)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Income Taxes [Abstract]    
Income tax expense at statutory Canadian rates 25.90% 25.60%
Increase (decrease) resulting from:    
Rate differential on foreign income (1.80%) 2.50%
Non-deductible expenses and non-taxable income (0.10%) 1.60%
Unrecognized tax losses and temporary differences (0.10%) (0.50%)
Research and development and other tax credits (0.70%) (1.10%)
Other 0.50% (1.50%)
Average effective tax rate 23.70% 26.60%