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Investments in associates and joint ventures - Narrative (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Jun. 30, 2026	Dec. 31, 2025
Disclosure of joint ventures [line items]
Accumulated other comprehensive (loss) income		$ (55)	$ 573
Maple Leaf Sports and Entertainment Ltd
Disclosure of joint ventures [line items]
Proportion of ownership interest in joint venture	20.20%
Non-current receivables due from joint ventures		965
Accumulated other comprehensive (loss) income		$ 823

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- References

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The amount of non-current receivables due from joint ventures. [Refer: Total for all joint ventures [member]]

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