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Wage Subsidies - Additional Information (Detail) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of Wage Subsidies [Line Items]
Salary And Wage Subsidies Recognized	$ 0
Canadian Emergency Wage Subsidy Program [Member]
Disclosure of Wage Subsidies [Line Items]
Salary And Wage Subsidies Recognized		$ 24
Operating Expense Reduction Due To Wage Subsidies	21
General And Administrative Expense Reduction Due To Wage Subsidies	$ 3

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- Definition

Disclosure of wage subsidies.

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- Definition

General and administrative expense reduction due to wage subsidies.

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- Definition

Operating expense reduction due to wage subsidies.

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- Definition

Salary and wage subsidies recognized.

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