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v3.25.1

Long term debt (Long-term debt) (Details) - CAD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 | May 24, 2024 | Dec. 31, 2023
Disclosure of detailed information about borrowings [line items] |  |  |
Debt | $ 1,281,290,000 |  | $ 1,784,174,000
Less current portion | (285,707,000) |  | (499,821,000)
Long-term debt | 995,583,000 |  | 1,284,353,000
2025 [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Unsecured debentures | 285,707,000 |  |
2026 [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Term loan | 0 |  |
2027 [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Term loan | 398,936,000 |  |
2028 [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Unsecured debentures | 0 |  |
2029 [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Unsecured debentures | 0 |  |
Thereafter [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Unsecured debentures | 596,647,000 |  |
Series F [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Unsecured debentures | $ 99,395,000 |  | 99,374,000
Stated interest rates on debentures | 5.09% |  |
Maturity date of borrowings | November 14, 2042 |  |
Series G [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Unsecured debentures | $ 0 |  | 499,821,000
Stated interest rates on debentures | 4.19% |  |
Maturity date of borrowings | June 24, 2024 |  |
Series H [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Unsecured debentures | $ 398,936,000 |  | 398,582,000
Stated interest rates on debentures | 2.95% |  |
Maturity date of borrowings | October 21, 2027 |  |
Series I [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Unsecured debentures | $ 497,252,000 | $ 500,000,000 | 0
Stated interest rates on debentures | 4.94% | 4.94% |
Maturity date of borrowings | May 24, 2031 |  |
Term Loan [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Term loan | $ 285,707,000 |  | $ 786,397,000

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