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Financial Instruments and Financial Risk Management - Additional Information (Details) t in Thousands, lb in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 CAD ($) USD_per_LB uSD_per_tonne lb t | Dec. 31, 2023 CAD ($) USD_per_LB $ / t lb | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Settlement payables | $ 23,000,000 | $ 15,000,000 |  |
Non-current derivative financial liabilities | $ 24,000,000 | $ 18,000,000 |  |
Maximum exposure to credit risk |  |  | $ 2,622 | $ 325
Steelmaking Coal | Receivable positions |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Volume (pounds in millions) | t | 504 |  |  |
Price (US$/lb.) | uSD_per_tonne | 264 |  |  |
Zinc | Receivable positions |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Volume (pounds in millions) | lb | 141 | 167 |  |
Price (US$/lb.) | USD_per_LB | 1.34 | 1.20 |  |
Sale and Purchase Contracts |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Current derivative financial assets | $ 1,500,000,000 | $ 1,300,000,000 |  |
Settlement payables | 70,000,000 | 36,000,000 |  |
Sale and Purchase Contracts | Steelmaking Coal |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Current derivative financial assets | 175,000,000 |  |  |
Embedded Derivatives | Zinc |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Non-current derivative financial liabilities | 32,000,000 | 30,000,000 |  |
Embedded Derivatives | Zinc | Trade accounts payable and other liabilities |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Non-current derivative financial liabilities | 8,000,000 | 7,000,000 |  |
Embedded Derivatives | Zinc | Provisions and other liabilities |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Non-current derivative financial liabilities | $ 24,000,000 | 23,000,000 |  |
Embedded Derivatives | Gold |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Ongoing payment percent | 15.00% |  |  |
Derivative financial assets | $ 106,000,000 | 48,000,000 |  |
Embedded Derivatives | Gold | Prepaid and other current assets |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Derivative financial assets | 11,000,000 | 4,000,000 |  |
Embedded Derivatives | Gold | Financial and other assets |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Derivative financial assets | $ 95,000,000 | 44,000,000 |  |
Embedded Derivatives | Silver |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Ongoing payment percent | 5.00% |  |  |
Derivative financial assets | $ 52,000,000 | 26,000,000 |  |
Embedded Derivatives | Silver | Prepaid and other current assets |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Derivative financial assets | 3,000,000 | 1,000,000 |  |
Embedded Derivatives | Silver | Financial and other assets |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Derivative financial assets | 49,000,000 | 25,000,000 |  |
Interest rate risk |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Sensitivity analysis for types of market risk, reasonably possible change in risk variable, impact on pre-tax earnings | $ (33,000,000) | (50,000,000) |  |
Reasonably possible change In risk variable, percent | 1.00% |  |  |
Commodity Price Risk |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Sensitivity analysis for types of market risk, reasonably possible change in risk variable, impact on pre-tax earnings | $ (44,000,000) | (34,000,000) |  |
Reasonably possible change In risk variable, percent | 10.00% |  |  |
Commodity Price Risk | Steelmaking Coal |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Sensitivity analysis for types of market risk, reasonably possible change in risk variable, impact on pre-tax earnings |  | $ (11,000,000) |  |
Reasonably possible change In risk variable, percent |  | 10.00% |  |
Price (US$/lb.) | $ / t |  | 264 |  |
Commodity Price Risk | Zinc |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Sensitivity analysis for types of market risk, reasonably possible change in risk variable, impact on pre-tax earnings | $ (1,000,000) | $ 1,000,000 |  |
Price (US$/lb.) | USD_per_LB | 1.34 | 1.20 |  |
Canada, Dollars | Hedges of net investment in foreign operations |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Gains (losses) on hedges of net investments in foreign operations, before tax | $ 54,000,000 | $ 65,000,000 |  |
Canada, Dollars | Borrowings by name | Hedges of net investment in foreign operations |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Maximum exposure to credit risk |  |  |  | $ 2,300
Canada, Dollars | Currency risk |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Reasonably possible change in risk variable, amount | 0.10 |  |  |
Sensitivity analysis for types of market risk, reasonably possible change in risk variable, impact on pre-tax earnings | (262,000,000) | 33,000,000 |  |
Sensitivity analysis for types of market risk, reasonably possible change in risk variable, impact on other comprehensive income (loss) | $ 1,500,000,000 | $ 1,100,000,000 |  |

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