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Per share amounts (Schedule of Earnings Per Share computation per common share) (Details) - CAD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Basic earnings (loss) per share computation
Net earnings attributable to equity holders	$ 171,853	$ 360,847
Weighted average common shares outstanding	434,870,473	433,382,879
Basic earnings per common share	$ 0.40	$ 0.83
Diluted earnings per share computation
Net earnings attributable to equity holders	$ 171,853	$ 360,847
Weighted average common shares outstanding	434,870,473	433,382,879
Dilutive effect of stock options	1,086,000	1,972,000
Weighted average common shares outstanding, assuming dilution	435,956,000	435,355,000
Diluted earnings per common share	$ 0.39	$ 0.83

X

- Definition

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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