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Acquisitions and divestitures - (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
IfrsStatementLineItems [Line Items] |  |  |
Equity results and other results in associates and joint ventures, net | $ (56) | $ (2) | $ (75)
Other financial items |  | 65 | 1,912
Total recycling from OCI |  | 215 | 1,912
Impairment reversal (impairment) of non-current assets gross |  | 1,111 | (211)
Equity results and other results in associates and joint ventures, gross |  | 150 |
Other financial items, net |  | 3,137 | 2,336
Equity results and other results in associates and joint ventures, net |  | 150 |
Total recycling from OCI, net |  | 3,287 | 2,336
Impairment reversal (impairment) of non-current assets, net |  | 522 | (3,493)
Mineracao Rio Do Norte [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Equity results and other results in associates and joint ventures, net | (87) |  |
Companhia Siderurgica Do Pecem [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Equity results and other results in associates and joint ventures, net | $ 31 | (135) |
Midwestern System [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Other financial items |  | 37 |
Total recycling from OCI |  | 37 |
Impairment reversal (impairment) of non-current assets gross |  | 1,121 | (78)
California Steel Industries [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Equity results and other results in associates and joint ventures, net |  | 142 |
Total recycling from OCI |  | 150 |
Equity results and other results in associates and joint ventures, gross |  | 150 |
Manganese [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Impairment reversal (impairment) of non-current assets gross |  | (10) | (35)
Other [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Equity results and other results in associates and joint ventures, net |  | (9) | (75)
Other financial items |  | 28 | 9
Total recycling from OCI |  | 28 | 9
Discontinued operations [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Other financial items |  | 3,072 | 424
Total recycling from OCI |  | 3,072 | 424
Impairment reversal (impairment) of non-current assets gross |  | $ (589) | (3,282)
Vale Nouvelle Caldonie S A S [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Other financial items |  |  | 1,132
Total recycling from OCI |  |  | 1,132
Impairment reversal (impairment) of non-current assets gross |  |  | (98)
Vale Shipping [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Other financial items |  |  | 771
Total recycling from OCI |  |  | $ 771

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