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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2024
Cash Flow Statement [Abstract] |
Summary of Cash Flow Information |
(CAD$ in millions) |  | December 31, 2024 |  | December 31, 2023
Cash and cash equivalents |  |  |  |
Cash |  | $ | 2,343 |  |  | $ | 399 |
Investments with maturities from the date of acquisition of three months or less |  | 5,244 |  |  | 345 |
|  | $ | 7,587 |  |  | $ | 744 |
Summary of Non-Cash Working Capital Items |
(CAD$ in millions) |  | 2024 |  | 2023
Net change in non-cash working capital items |  |  |  |
Trade and settlement receivables |  | $ | (347) |  |  | $ | (123) |
Inventories |  | (374) |  |  | (439) |
Prepaids and other current assets |  | (29) |  |  | (253) |
Trade accounts payable and other liabilities |  | 474 |  |  | 272
|  | $ | (276) |  |  | $ | (543) |
Summary of Cash Flows From Investing Activities |
(CAD$ in millions) |  | 2024 |  | 2023
Net proceeds from sale of discontinued operations and other |  |  |  |
Net proceeds from sale of steelmaking coal business |  | $ | 9,483 |  |  | $ | — |
Proceeds from sale of Fort Hills |  | — |  |  | 1,014 |
Proceeds from other assets |  | 55 |  |  | 34 |
|  | $ | 9,538 |  |  | $ | 1,048 |

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