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Exchangeable Securities - Schedule of Exchangeable Securities (Details) - CAD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	May 01, 2019
Disclosure of detailed information about borrowings [line items]
Total non-current credit facilities, long-term debt and lease liabilities	$ 3,236	$ 2,934
7% Unsecured Subordinated Debentures Due May 1, 2039
Disclosure of detailed information about borrowings [line items]
Exchangeable debentures – due May 1, 2039	$ 350	$ 350
Interest	7.00%	7.00%	7.00%
Exchangeable preferred shares	$ 400	$ 400
Total non-current credit facilities, long-term debt and lease liabilities	750	750
7% Unsecured Subordinated Debentures Due May 1, 2039 | Cost
Disclosure of detailed information about borrowings [line items]
Exchangeable debentures – due May 1, 2039	350	344
Exchangeable preferred shares	400	400
Total non-current credit facilities, long-term debt and lease liabilities	$ 750	$ 744

X

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

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