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Leases (Tables) | 12 Months Ended
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Dec. 31, 2024
Presentation of leases for lessee [abstract] |
Summary of Adoption of New IFRS Pronouncements | As at December 31, 2024, $1.0 billion (2023 – $1.1 billion) of right-of-use assets are recorded as part of land, buildings, plant and equipment within property, plant and equipment.
(CAD$ in millions) | 2024 | 2023
Opening net book value | $ | 1,108 |  | $ | 612 |
Additions | 187 |  | 673 |
Depreciation | (137) |  | (147) |
Changes in foreign exchange rates and other | 49 |  | (30) |
Sale of steelmaking coal business | (196) |  | — |
Closing net book value | $ | 1,011 |  | $ | 1,108 |
Summary of Disclosure of Lease Liability Continuity | Lease Liability Continuity
(CAD$ in millions) | 2024 | 2023
At January 1 | $ | 1,061 |  | $ | 571 |
Cash flows |  |
Principal payments | (120) |  | (160) |
Interest payments | (52) |  | (31) |
Non-cash changes |  |
Additions | 182 |  | 674 |
Interest expense | 49 |  | 31 |
Changes in foreign exchange rates and other | 40 |  | (24) |
Sale of steelmaking coal business | (209) |  | — |
At December 31 | $ | 951 |  | $ | 1,061 |
Less current portion of lease liabilities | (175) |  | (195) |
Non-current lease liabilities | $ | 776 |  | $ | 866 |

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- Definition The disclosure of quantitative information about right-of-use assets. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Disclosure Of Of Cash Flows On Lease Liability Continuity [Table Text Block] + References No definition available. + Details
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