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Supplemental Disclosure of Cash Flow Information - Liabilities Arising from Financing Activities (Details) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Liabilities arising from financing activities, beginning balance | $ 12,354 | $ 12,985 |
Changes from financing cash flows: |  |  |
Issuance (repayment) of bank credit facilities and commercial paper, net | 5,466 | 0 | $ (1,156)
Issuance of other long-term debt | 2,639 | 0 | 0
Repayment of other long-term debt | (1,008) | (416) | (2,854)
Payment of lease liabilities | (325) | (285) | (232)
Non-cash changes: |  |  |
Lease additions | 231 | 317 |
Changes in foreign exchange and fair value | 926 | (247) |
Liabilities arising from financing activities, ending balance | 20,283 | 12,354 | 12,985
Long-term debt |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Liabilities arising from financing activities, beginning balance | 10,799 | 11,445 |
Changes from financing cash flows: |  |  |
Issuance (repayment) of bank credit facilities and commercial paper, net | 5,466 |  |
Issuance of other long-term debt | 2,639 |  |
Repayment of other long-term debt | (1,008) | (416) |
Non-cash changes: |  |  |
Changes in foreign exchange and fair value | 923 | (230) |
Liabilities arising from financing activities, ending balance | 18,819 | 10,799 | 11,445
Lease liabilities |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Liabilities arising from financing activities, beginning balance | 1,555 | 1,540 |
Changes from financing cash flows: |  |  |
Payment of lease liabilities | (325) | (285) |
Non-cash changes: |  |  |
Lease additions | 231 | 317 |
Changes in foreign exchange and fair value | 3 | (17) |
Liabilities arising from financing activities, ending balance | $ 1,464 | $ 1,555 | $ 1,540

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- Definition Issuance (Repayments) Of Line Of Credit Borrowings, Classified As Financing Activities + References No definition available. + Details
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- Definition Repayments Of Other Long-Term Borrowings, Classified As Financing Activities + References No definition available. + Details
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- Definition The increase (decrease) in liabilities arising from financing activities resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Liabilities arising from financing activities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 44B -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_44B_e&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of liabilities for which cash flows were, or future cash flows will be, classified in the statement of cash flows as cash flows from financing activities. [Refer: Cash flows from (used in) financing activities; Liabilities] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 44D -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_44D&doctype=Standard -URIDate 2024-03-27 + Details
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