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Brumadinho dam failure (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
IfrsStatementLineItems [Line Items]  
Balance at the beginning $ 3,312
Revision to estimates and new provisions 476
Monetary and present value adjustments 363
Disbursements (1,330)
Translation adjustment 239
Balance at the ending 3,060
Judicial Settlement For Brumadinho [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 2,526
Revision to estimates and new provisions 39
Monetary and present value adjustments 258
Disbursements (1,004)
Translation adjustment 178
Balance at the ending 1,997
Judicial Settlement For Brumadinho [Member] | Payment Obligations [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 882
Revision to estimates and new provisions 34
Monetary and present value adjustments 79
Disbursements (495)
Translation adjustment 62
Balance at the ending 562
Judicial Settlement For Brumadinho [Member] | Provision For Socio Economic Reparation And Others [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 867
Revision to estimates and new provisions (4)
Monetary and present value adjustments 97
Disbursements (423)
Translation adjustment 55
Balance at the ending 592
Judicial Settlement For Brumadinho [Member] | Provision For Social And Environmental Reparation [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 777
Revision to estimates and new provisions 9
Monetary and present value adjustments 82
Disbursements (86)
Translation adjustment 61
Balance at the ending 843
Other Obligations [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 786
Revision to estimates and new provisions 437
Monetary and present value adjustments 105
Disbursements (326)
Translation adjustment 61
Balance at the ending 1,063
Other Obligations [Member] | Tailings Containment And Geotechnical Safety [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 559
Revision to estimates and new provisions 200
Monetary and present value adjustments 58
Disbursements (175)
Translation adjustment 42
Balance at the ending 684
Other Obligations [Member] | Individual Indemnification [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 45
Revision to estimates and new provisions 104
Monetary and present value adjustments 9
Disbursements (78)
Translation adjustment 3
Balance at the ending 83
Other Obligations [Member] | Other Commitments [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 182
Revision to estimates and new provisions 133
Monetary and present value adjustments 38
Disbursements (73)
Translation adjustment 16
Balance at the ending $ 296