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v3.23.1

Impairment reversal (impairment and disposals) of non-current assets (Details 1) t in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) t | Dec. 31, 2021 USD ($) t
Iron Ore Pellets [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Impairment testing results | The recoverable amount of the operating segments is higher than the carrying amount and, therefore, there is no impairment to be recognized. |
Nickel Operations [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Impairment testing results | The recoverable amount of the operating segments is higher than the carrying amount and, therefore, there is no impairment to be recognized. |
Research And Development Project [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Impairment testing results | The recoverable amount of the operating segments is higher than the carrying amount and, therefore, there is no impairment to be recognised. |
Iron Ore Pellets [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Carrying amount | $ | $ 1,367 | $ 1,278
Impairment testing results |  | The recoverable amount of the operating segments is higher than the carrying amount and, therefore, there is no impairment to be recognized.
Measurement of recoverable value | FVLCD | FVLCD
Discount rate | 6.40% | 4.40%
Period of cash flow projections | 2052 | 2051
Sensitivity of key assumptions | A 29% reduction in the long-term prices of all commodities or a 51% reduction in reserves would, alone, result in estimated recoverable amount equal to the carrying value of this CGU. | A 29% reduction in the long-term prices of all commodities or a 52% reduction in reserves would, alone, result in estimated recoverable amount equal to the carrying value of this CGU.
Iron Ore Pellets [Member] | Bottom of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Range iron ore forecasted prices | 75 | 80
Iron Ore Pellets [Member] | Top of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Range iron ore forecasted prices | 95 | 90
Nickel Operations [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Carrying amount | $ | $ 1,822 | $ 1,930
Impairment testing results |  | The recoverable amount of the operating segments is higher than the carrying amount and, therefore, there is no impairment to be recognized.
Measurement of recoverable value | FVLCD | FVLCD
Period of cash flow projections | 2045 | 2045
Sensitivity of key assumptions | A 23.7% reduction in the long-term prices of all commodities or an 8.4% reduction in volumes would, alone, result in estimated recoverable amount equal to the carrying value of this CGU. | A 27.9% reduction in the long-term prices of all commodities or an 10.1% reduction in volumes would, alone, result in estimated recoverable amount equal to the carrying value of this CGU.
Nickel Operations [Member] | Bottom of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Discount rate | 4.50% | 3.20%
Range iron ore forecasted prices | 21,000 | 17,000
Nickel Operations [Member] | Top of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Discount rate | 5.30% | 3.80%
Range iron ore forecasted prices | 24,000 | 19,000
Research And Development Project [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Carrying amount | $ | $ 528 | $ 494
Impairment testing results |  | The recoverable amount of the operating segments is higher than the carrying amount and, therefore, there is no impairment to be recognised.
Measurement of recoverable value | FVLCD | FVLCD
Discount rate | 6.40% | 4.40%
Period of cash flow projections |  | 2051
Sensitivity of key assumptions | A 77% reduction in in processing and beneficiating iron ore volumes would, alone, result in estimated recoverable amount equal to the carrying value of this CGU. | A 80% reduction in processing and beneficiating iron ore volumes would, alone, result in estimated recoverable amount equal to the carrying value of this CGU.

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- Definition The description of key assumptions on which management has based its cash flow projections for the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). Key assumptions are those to which the unit's (group of units') recoverable amount is most sensitive. [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2022-03-24 -Paragraph 134 -Subparagraph d -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2022-en-r&anchor=para_134_d_i&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2022-03-24 -Paragraph 135 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2022-en-r&anchor=para_135_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The explanation of the value(s) assigned to key assumption(s) on which management has based its determination of recoverable amount for a cash-generating unit (group of units). [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2022-03-24 -Paragraph 134 -Subparagraph f -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2022-en-r&anchor=para_134_f_ii&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2022-03-24 -Paragraph 135 -Subparagraph e -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2022-en-r&anchor=para_135_e_ii&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The description of methods and assumptions used when preparing a sensitivity analysis for types of market risk to which the entity is exposed. [Refer: Market risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 40 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_40_b&doctype=Standard -URIDate 2022-03-24 + Details
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