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Goodwill and Intangible Assets - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2022 CAD ($) Multiple	Dec. 31, 2021 CAD ($) Multiple
Disclosure of detailed information about intangible assets [Line Items]
Impairment loss recognised in profit or loss good will | $	$ 0	$ 0
Price-to-earnings multiples | Multiple	11.6	11.6
Canada [member]
Disclosure of detailed information about intangible assets [Line Items]
Tax rate applied to cash flow projections	27.50%	26.50%
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]
Growth rate used to extrapolate cash flow projections	0.00%	0.00%
After-tax discount rate applied to cash flow projections	10.00%	8.00%
Pre-tax discount rate applied to cash flow projections	12.50%	10.00%
Top of range [Member]
Disclosure of detailed information about intangible assets [Line Items]
Growth rate used to extrapolate cash flow projections	0.90%	0.60%
After-tax discount rate applied to cash flow projections	12.00%	10.10%
Pre-tax discount rate applied to cash flow projections	15.00%	12.70%

X

- Definition

The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Cash-generating units [member]]

+ References

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The growth rate used to extrapolate cash flow projections beyond the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). [Refer: Cash-generating units [member]]

+ References

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The amount of impairment loss recognised in profit or loss for goodwill. [Refer: Impairment loss recognised in profit or loss; Goodwill]

+ References

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