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Earnings per Common Share (Details) - CAD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Earnings per Common Share
Net earnings	$ 9,077	$ 4,119
Weighted average number of common shares	1,387	1,488
Dilutive securities:
Effect of share options	3	1
Weighted average number of diluted common shares	1,390	1,489
Basic earnings per share (dollars per common share)	$ 6.54	$ 2.77
Diluted earnings per share (dollars per common share)	$ 6.53	$ 2.77

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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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