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Financial Instruments and Financial Risk Management - Summary of Fair Value of Commodity Swaps Valuation by Discounted Cash Flow Method (Details) lb in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2024 CAD ($) USD_per_Pound lb | Dec. 31, 2023 CAD ($) lb
Disclosure of fair value of commodity swaps [line items] |  |
Settlement payables | $ | $ 23 | $ 15
Swap contract |  |
Disclosure of fair value of commodity swaps [line items] |  |
Settlement payables | $ | $ (6) |
Swap contract | Zinc |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume (pounds in millions) | 250 |
Financial assets | $ | $ (9) |
Swap contract | Lead swaps |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume (pounds in millions) | 83 |
Financial assets | $ | $ (6) |
Swap contract | Copper |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume (pounds in millions) | 47 |
Financial assets | $ | $ 9 |
Receivable positions | Zinc |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume (pounds in millions) | 141 | 167
Receivable positions | Lead swaps |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume (pounds in millions) | 57 | 17
Receivable positions | Copper |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume (pounds in millions) | 178 | 127
Receivable positions | Swap contract | Zinc |  |
Disclosure of fair value of commodity swaps [line items] |  |
Average Price of Commitments | USD_per_Pound | 1.35 |
Receivable positions | Swap contract | Lead swaps |  |
Disclosure of fair value of commodity swaps [line items] |  |
Average Price of Commitments | USD_per_Pound | 0.91 |
Receivable positions | Swap contract | Copper |  |
Disclosure of fair value of commodity swaps [line items] |  |
Average Price of Commitments | USD_per_Pound | 3.93 |
Payable positions | Zinc |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume (pounds in millions) | 84 | 121
Payable positions | Lead swaps |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume (pounds in millions) | 32 | 15
Payable positions | Swap contract | Zinc |  |
Disclosure of fair value of commodity swaps [line items] |  |
Average Price of Commitments | USD_per_Pound | 1.34 |
Payable positions | Swap contract | Lead swaps |  |
Disclosure of fair value of commodity swaps [line items] |  |
Average Price of Commitments | USD_per_Pound | 0.89 |
Payable positions | Swap contract | Copper |  |
Disclosure of fair value of commodity swaps [line items] |  |
Average Price of Commitments | USD_per_Pound | 4.03 |

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- Definition The amount of current derivative financial assets. [Refer: Derivative financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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