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Financial and capital risk management - Cash flow hedge (Details 10) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
Nickel Revenue Hedging Programs Forward Options Sold [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Nominal amount of hedging instrument | (3,150) | 6,300
Average strike per ton | 34,929 |
Fair value of liabilities | $ 45 | $ 28
Financial settlement inflows outflows | 34 |
Value at risk | 4 |
Nickel Revenue Hedging Programs Forward Options Sold [Member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Value at risk | 45 |
Nickel Revenue Hedge Program [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 45 | $ 28
Financial settlement inflows outflows | 34 |
Value at risk | 4 |
Nickel Revenue Hedge Program [Member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Value at risk | $ 45 |

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- Definition The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]] + 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 measure of a potential loss exposure as a result of future market movements, based on a specified confidence interval and measurement horizon. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 41 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_41&doctype=Standard -URIDate 2023-03-23 + Details
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- References No definition available. + Details
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- References No definition available. + Details
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- References No definition available. + Details
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- References No definition available. + Details
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- Details
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- Details
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- Details
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