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Brumadinho dam failure (Details 1)
$ in Millions
 12 Months Ended
Dec. 31, 2024
USD ($)
IfrsStatementLineItems [Line Items]  
Balance at the beginning $ 3,060
Revision to estimates 116
Monetary and present value adjustments 294
Disbursements (909)
Translation adjustment (591)
Balance at the ending 1,970
Judicial Settlement For Brumadinho [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 1,997
Revision to estimates (52)
Monetary and present value adjustments 181
Disbursements (583)
Translation adjustment (379)
Balance at the ending 1,164
Judicial Settlement For Brumadinho [Member] | Payment Obligations [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 562
Revision to estimates (16)
Monetary and present value adjustments 53
Disbursements (189)
Translation adjustment (106)
Balance at the ending 304
Judicial Settlement For Brumadinho [Member] | Provision For Socio Economic Reparation And Others [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 592
Revision to estimates (57)
Monetary and present value adjustments 52
Disbursements (150)
Translation adjustment (110)
Balance at the ending 327
Judicial Settlement For Brumadinho [Member] | Provision For Social And Environmental Reparation [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 843
Revision to estimates 21
Monetary and present value adjustments 76
Disbursements (244)
Translation adjustment (163)
Balance at the ending 533
Other Obligations [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 1,063
Revision to estimates 168
Monetary and present value adjustments 113
Disbursements (326)
Translation adjustment (212)
Balance at the ending 806
Other Obligations [Member] | Tailings Containment And Geotechnical Safety [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 684
Revision to estimates 42
Monetary and present value adjustments 56
Disbursements (147)
Translation adjustment (131)
Balance at the ending 504
Other Obligations [Member] | Individual Indemnification [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 83
Revision to estimates 21
Monetary and present value adjustments 15
Disbursements (60)
Translation adjustment (10)
Balance at the ending 49
Other Obligations [Member] | Other Commitments [Member]  
IfrsStatementLineItems [Line Items]  
Balance at the beginning 296
Revision to estimates 105
Monetary and present value adjustments 42
Disbursements (119)
Translation adjustment (71)
Balance at the ending $ 253