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Segmented Information - Schedule of Operating Segments (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure of operating segments [line items] |  |
Revenue (Note 7) | $ 9,065 | $ 6,476
Cost of sales | (7,458) | (5,364)
Gross profit | 1,607 | 1,112
Asset impairment | (1,053) | 0
Operating income (expense) – other | (563) | (890)
Profit (loss) from operations | (9) | 222
Finance income | 234 | 110
Finance expense | (953) | (160)
Non-operating income (expense) | 7 | (249)
Share of profit of joint venture | 3 | 2
Profit (loss) before taxes from continuing operations | (718) | (75)
Depreciation and amortization | (1,726) | (925)
Capital expenditures from continuing operations | 2,635 | 4,340
Goodwill from continuing operations |  | 406
Goodwill from discontinued operations – Unallocated |  | 702
Goodwill (Note 19) | 442 | 1,108
Total assets from continuing operations |  | 36,812
Total assets | 47,037 | 56,193
Corporate |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 7) | 0 |
Cost of sales | 0 |
Gross profit | 0 |
Asset impairment | (15) |
Operating income (expense) – other | (615) |
Profit (loss) from operations | (630) |
Finance income | 210 |
Finance expense | (200) |
Non-operating income (expense) | 95 |
Share of profit of joint venture | 0 |
Profit (loss) before taxes from continuing operations | (525) |
Depreciation and amortization | (61) |
Capital expenditures from continuing operations | 23 |
Discontinued operations |  |
Disclosure of operating segments [line items] |  |
Cost of sales |  | (4,665)
Gross profit |  | 4,013
Non-operating income (expense) |  | (17)
Total assets from discontinued operations – Unallocated |  | 19,381
Aggregate continuing and discontinued operations |  |
Disclosure of operating segments [line items] |  |
Total assets | 47,037 | 56,193
Copper |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 7) | 5,542 | 3,425
Cost of sales |  | (2,713)
Gross profit |  | 712
Operating income (expense) – other |  | 56
Profit (loss) from operations |  | 768
Finance income |  | 23
Finance expense |  | (79)
Non-operating income (expense) |  | (190)
Share of profit of joint venture |  | 2
Profit (loss) before taxes from continuing operations |  | 524
Depreciation and amortization |  | (553)
Capital expenditures from continuing operations |  | 4,018
Goodwill from continuing operations |  | 406
Goodwill from discontinued operations – Unallocated |  | 0
Goodwill (Note 19) |  | 406
Total assets from continuing operations |  | 28,636
Copper | Operating segments |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 7) | 5,542 |
Cost of sales | (4,497) |
Gross profit | 1,045 |
Asset impairment | 0 |
Operating income (expense) – other | 13 |
Profit (loss) from operations | 1,058 |
Finance income | 23 |
Finance expense | (687) |
Non-operating income (expense) | (94) |
Share of profit of joint venture | 3 |
Profit (loss) before taxes from continuing operations | 303 |
Depreciation and amortization | (1,356) |
Capital expenditures from continuing operations | 2,267 |
Goodwill (Note 19) | 442 |
Copper | Discontinued operations |  |
Disclosure of operating segments [line items] |  |
Total assets from discontinued operations – Unallocated |  | 0
Copper | Aggregate continuing and discontinued operations |  |
Disclosure of operating segments [line items] |  |
Total assets |  | 28,636
Copper | Aggregate continuing and discontinued operations | Operating segments |  |
Disclosure of operating segments [line items] |  |
Total assets | 34,433 |
Zinc |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 7) | 3,523 | 3,051
Cost of sales |  | (2,651)
Gross profit |  | 400
Operating income (expense) – other |  | (86)
Profit (loss) from operations |  | 314
Finance income |  | 1
Finance expense |  | (53)
Non-operating income (expense) |  | 0
Share of profit of joint venture |  | 0
Profit (loss) before taxes from continuing operations |  | 262
Depreciation and amortization |  | (308)
Capital expenditures from continuing operations |  | 298
Goodwill from continuing operations |  | 0
Goodwill from discontinued operations – Unallocated |  | 0
Goodwill (Note 19) |  | 0
Total assets from continuing operations |  | 4,581
Zinc | Operating segments |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 7) | 3,523 |
Cost of sales | (2,961) |
Gross profit | 562 |
Asset impairment | (1,038) |
Operating income (expense) – other | 39 |
Profit (loss) from operations | (437) |
Finance income | 1 |
Finance expense | (66) |
Non-operating income (expense) | 6 |
Share of profit of joint venture | 0 |
Profit (loss) before taxes from continuing operations | (496) |
Depreciation and amortization | (309) |
Capital expenditures from continuing operations | 345 |
Goodwill (Note 19) | 0 |
Zinc | Discontinued operations |  |
Disclosure of operating segments [line items] |  |
Total assets from discontinued operations – Unallocated |  | 0
Zinc | Aggregate continuing and discontinued operations |  |
Disclosure of operating segments [line items] |  |
Total assets |  | 4,581
Zinc | Aggregate continuing and discontinued operations | Operating segments |  |
Disclosure of operating segments [line items] |  |
Total assets | 4,187 |
Corporate |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 7) |  | 0
Cost of sales |  | 0
Gross profit |  | 0
Operating income (expense) – other |  | (860)
Profit (loss) from operations |  | (860)
Finance income |  | 86
Finance expense |  | (28)
Non-operating income (expense) |  | (59)
Share of profit of joint venture |  | 0
Profit (loss) before taxes from continuing operations |  | (861)
Depreciation and amortization |  | (64)
Capital expenditures from continuing operations |  | 24
Goodwill from continuing operations |  | 0
Goodwill from discontinued operations – Unallocated |  | 0
Goodwill (Note 19) |  | 0
Total assets from continuing operations |  | 3,595
Corporate | Corporate |  |
Disclosure of operating segments [line items] |  |
Goodwill (Note 19) | 0 |
Corporate | Discontinued operations |  |
Disclosure of operating segments [line items] |  |
Total assets from discontinued operations – Unallocated |  | 0
Corporate | Aggregate continuing and discontinued operations |  |
Disclosure of operating segments [line items] |  |
Total assets |  | $ 3,595
Corporate | Aggregate continuing and discontinued operations | Corporate |  |
Disclosure of operating segments [line items] |  |
Total assets | $ 8,417 |

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