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Financial Instruments and Financial Risk Management - Summary of Fair Value of Commodity Swaps Valuation by Discounted Cash Flow Method (Detail) lb in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2022 CAD ($) USD_per_Pound lb | Dec. 31, 2021 CAD ($) lb
Disclosure of fair value of commodity swaps [line items] |  |
Settlement payables (Note 31) | $ | $ 10 | $ 9
Swap contract |  |
Disclosure of fair value of commodity swaps [line items] |  |
Settlement payables (Note 31) | $ | $ 12 |
Swap contract | Zinc |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume | 181 |
Financial assets | $ | $ 4 |
Swap contract | Lead (pounds in millions) |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume | 75 |
Financial assets | $ | $ 8 |
Payable positions | Zinc |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume | 75 | 63
Payable positions | Lead (pounds in millions) |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume | 18 | 10
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 (pounds in millions) |  |
Disclosure of fair value of commodity swaps [line items] |  |
Average Price of Commitments | USD_per_Pound | 1.02 |
Receivable positions | Zinc |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume | 218 | 175
Receivable positions | Lead (pounds in millions) |  |
Disclosure of fair value of commodity swaps [line items] |  |
Volume | 17 | 53
Receivable positions | Swap contract | Zinc |  |
Disclosure of fair value of commodity swaps [line items] |  |
Average Price of Commitments | USD_per_Pound | 1.34 |
Receivable positions | Swap contract | Lead (pounds in millions) |  |
Disclosure of fair value of commodity swaps [line items] |  |
Average Price of Commitments | USD_per_Pound | 1.01 |

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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 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of current derivative financial liabilities. [Refer: Derivative financial liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + Details
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- Details
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