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Material Accounting Policy Information - Additional Information (Details) |  | 12 Months Ended
--- | --- | ---
Feb. 02, 2023 | Dec. 31, 2024 | Dec. 31, 2022
PSUs |  |  |
Disclosure of joint ventures [line items] |  |  |
Performance metric two, three and four respective grant, percentage |  | 20.00% | 20.00%
Average return on capital employed (in years) |  | 5 years |
Performance metric one grant, percentage |  | 40.00% |
Bottom of range |  |  |
Disclosure of joint ventures [line items] |  |  |
Useful life measured as period of time, intangible assets other than goodwill |  | 3 years |
Vesting percentage |  |  | 0.00%
Bottom of range | PSUs |  |  |
Disclosure of joint ventures [line items] |  |  |
Vesting percentage |  |  | 0.00%
Top of range |  |  |
Disclosure of joint ventures [line items] |  |  |
Useful life measured as period of time, intangible assets other than goodwill |  | 20 years |
Vesting percentage |  |  | 200.00%
Top of range | PSUs |  |  |
Disclosure of joint ventures [line items] |  |  |
Vesting percentage |  |  | 200.00%
Buildings and equipment (not used in production) | Bottom of range |  |  |
Disclosure of joint ventures [line items] |  |  |
Useful life |  | 1 year |
Buildings and equipment (not used in production) | Top of range |  |  |
Disclosure of joint ventures [line items] |  |  |
Useful life |  | 40 years |
Plant and equipment (smelting operations) | Bottom of range |  |  |
Disclosure of joint ventures [line items] |  |  |
Useful life |  | 2 years |
Plant and equipment (smelting operations) | Top of range |  |  |
Disclosure of joint ventures [line items] |  |  |
Useful life |  | 30 years |
Fort Hills Energy Limited Partnership |  |  |
Disclosure of joint ventures [line items] |  |  |
Proportion of ownership interest in joint operation | 21.30% |  |
NuevaUnión |  |  |
Disclosure of joint ventures [line items] |  |  |
Proportion of ownership interest in joint venture |  | 50.00% |
Galore Creek Partnership |  |  |
Disclosure of joint ventures [line items] |  |  |
Proportion of ownership interest in joint operation |  | 50.00% |
Antamina |  |  |
Disclosure of joint ventures [line items] |  |  |
Proportion of ownership interest in joint operation |  | 22.50% |
NewRange Copper Nickel LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Proportion of ownership interest in joint venture |  | 50.00% |
S.A.P.I. de C.V. |  |  |
Disclosure of joint ventures [line items] |  |  |
Proportion of ownership interest in joint operation |  | 87.00% |

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