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Legal and administrative proceedings (Details Narrative) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
IfrsStatementLineItems [Line Items]    
Guarantee obligations bank guarantee $ 2,900 $ 2,700
Cfem Related Proceedings [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 1,835 2,132
Assessments And Legal Proceedings Related To Pis Cofins [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 2,326 2,198
Tax On Services [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 739 738
Assessments And Legal Proceedings Related To Tax On Services [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 389 586
Environmental Litigations Iron Ore Operations In Itabira [Member]    
IfrsStatementLineItems [Line Items]    
Loss contingency damages sought value $ 460 $ 524