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Financial Instruments and Financial Risk Management - Additional Information (Details) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 CAD ($) | Dec. 31, 2020 CAD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Risk exposure |  |  | $ 221 | $ (135)
Settlement payables | $ 9,000,000 | $ 6,000,000 |  |
Non-current derivative financial liabilities | 51,000,000 | 26,000,000 |  |
Non-current derivative financial assets | 63,000,000 | 77,000,000 |  |
Non-current derivative financial liabilities | 51,000,000 | 26,000,000 |  |
Sale and Purchase Contracts |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Current derivative financial assets | 1,100,000,000 | 949,000,000 |  |
Settlement payables | 39,000,000 | 61,000,000 |  |
Zinc | Embedded Derivatives |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Non-current derivative financial liabilities | 60,000,000 | 32,000,000 |  |
Non-current derivative financial liabilities | 60,000,000 | 32,000,000 |  |
Zinc | Trade accounts payable and other liabilities | Embedded Derivatives |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Non-current derivative financial liabilities | 9,000,000 | 6,000,000 |  |
Non-current derivative financial liabilities | 9,000,000 | 6,000,000 |  |
Zinc | Provisions and other liabilities | Embedded Derivatives |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Non-current derivative financial liabilities | 51,000,000 | 26,000,000 |  |
Non-current derivative financial liabilities | 51,000,000 | 26,000,000 |  |
Gold | Embedded Derivatives |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Current derivative financial assets | $ 43,000,000 | 51,000,000 |  |
Ongoing payment percent | 15.00% |  |  |
Gold | Prepaid and other current assets | Embedded Derivatives |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Current derivative financial assets | $ 3,000,000 | 5,000,000 |  |
Gold | Financial and other assets | Embedded Derivatives |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Current derivative financial assets | 40,000,000 | 46,000,000 |  |
Silver | Embedded Derivatives |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Non-current derivative financial liabilities | $ 25,000,000 |  |  |
Ongoing payment percent | 5.00% |  |  |
Non-current derivative financial assets |  | 33,000,000 |  |
Non-current derivative financial liabilities | $ 25,000,000 |  |  |
Silver | Prepaid and other current assets | Embedded Derivatives |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Non-current derivative financial assets | 2,000,000 | 2,000,000 |  |
Silver | Financial and other assets | Embedded Derivatives |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Non-current derivative financial liabilities | 23,000,000 | 31,000,000 |  |
Non-current derivative financial liabilities | 23,000,000 | 31,000,000 |  |
Swap contract |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Settlement payables | 9,000,000 |  |  |
Swap contract | Zinc |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Current derivative financial assets | 9,000,000 |  |  |
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 | 13,000,000 | 128,000,000 |  |
Canada, Dollars | Borrowings | Hedges of net investment in foreign operations |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Risk exposure |  |  | $ 2,700 | $ 3,600
Currency risk | Canada, Dollars |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Reasonably possible change in risk variable, amount | 0.10 |  |  |
Impact on pre-tax earnings | (17,000,000) | (18,000,000) |  |
Reasonably possible change in risk variable, impact on other comprehensive income (loss) | (582,000,000) | (415,000,000) |  |
Interest rate risk |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Impact on pre-tax earnings | $ 1,000,000 | 4,000,000 |  |
Commodity Price Risk |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Reasonably possible change In risk variable, percent | 10.00% |  |  |
Risk exposure | $ 23,000,000 | 32,000,000 |  |
Commodity Price Risk | Zinc |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Impact on pre-tax earnings | $ 7,000,000 | $ (2,000,000) |  |

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