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Financial Instruments and Financial Risk Management - Summary of Derivatives Not Designated as Hedging Instruments and Embedded Derivatives (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of detailed information about financial instruments [line items] |  |
Settlement pricing adjustments | $ 23 | $ (341)
Swap contract | Zinc |  |
Disclosure of detailed information about financial instruments [line items] |  |
Settlement pricing adjustments | (23) | 15
Swap contract | Lead (pounds in millions) |  |
Disclosure of detailed information about financial instruments [line items] |  |
Settlement pricing adjustments | (9) | 3
Swap contract | Copper |  |
Disclosure of detailed information about financial instruments [line items] |  |
Settlement pricing adjustments | (1) | 0
Settlement receivables and payables (Note 10) |  |
Disclosure of detailed information about financial instruments [line items] |  |
Settlement pricing adjustments | 39 | (371)
Current derivative financial assets | 1,300 | 1,100
Embedded Derivatives | Zinc |  |
Disclosure of detailed information about financial instruments [line items] |  |
Settlement pricing adjustments | 5 | 27
Embedded Derivatives | Gold |  |
Disclosure of detailed information about financial instruments [line items] |  |
Settlement pricing adjustments | 12 | (8)
Embedded Derivatives | Silver |  |
Disclosure of detailed information about financial instruments [line items] |  |
Settlement pricing adjustments | 4 | (2)
Variable consideration |  |
Disclosure of detailed information about financial instruments [line items] |  |
Settlement pricing adjustments | $ (4) | $ (5)

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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 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The gains (losses) on financial assets at fair value through profit or loss. [Refer: Financial assets at fair value through profit or loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 20 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_20_a_i&doctype=Standard -URIDate 2023-03-23 + Details
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- Details
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