v3.26.1
Legal and administrative proceedings (Details Narrative) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
IfrsStatementLineItems [Line Items]    
Guarantee obligations bank guarantee $ 3,500 $ 2,900
Cfem Related Proceedings [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 2,301 1,835
Assessments And Legal Proceedings Related To Pis Cofins [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 2,824 2,326
Tax On Services [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 794 739
Assessments And Legal Proceedings Related To Tax On Services [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 533 389
National Mining Agency [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 23  
Fabrica Mine [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 211  
Congonhas [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 74  
Tamandua Mine [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 381  
Water Overflow Fabric Mmine [Member]    
IfrsStatementLineItems [Line Items]    
Estimated Loss on Legal Proceedings 409  
Estimated Loss on Legal Proceeding 74  
Environmental Litigations Iron Ore Operations In Itabira [Member]    
IfrsStatementLineItems [Line Items]    
Loss contingency damages sought value $ 573 $ 460