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Basis of preparation of financial statements (Details Narrative)
R$ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2023
BRL (R$)
Jun. 30, 2022
USD ($)
IfrsStatementLineItems [Line Items]          
Property, plant, and equipment $ 48,396 $ 44,938 $ 41,931    
Expenses relation to carbon credits 4        
Investments in dry stacking and processing systems 144 305      
Research and development expenses 723 660 549    
Other operating expenses (1,498) (1,722) $ (2,976)    
Outstanding balances related suppliers 221 202      
Sol Do Cerrado [Member]          
IfrsStatementLineItems [Line Items]          
Property, plant, and equipment 590     R$ 3  
Gelado Project [Member]          
IfrsStatementLineItems [Line Items]          
Capital investment 50 $ 65      
Vale Ventures [Member]          
IfrsStatementLineItems [Line Items]          
Capital investment         $ 100
Allonia [Member]          
IfrsStatementLineItems [Line Items]          
Acquisition of minority stakes 19        
Evok Innovations [Member]          
IfrsStatementLineItems [Line Items]          
Capital investment 3        
Agera [Member]          
IfrsStatementLineItems [Line Items]          
Research and development expenses 1        
Krenak Indigenous Community [Member]          
IfrsStatementLineItems [Line Items]          
Other operating expenses 5        
Tupiniquim And Guarani [Member]          
IfrsStatementLineItems [Line Items]          
Other operating expenses 2        
Kayapo In Para Kaapor And Guajajara [Member]          
IfrsStatementLineItems [Line Items]          
Other operating expenses 7        
Bottom of range [member]          
IfrsStatementLineItems [Line Items]          
Investment on decarbonization plan 4,000        
Top of range [member]          
IfrsStatementLineItems [Line Items]          
Investment on decarbonization plan $ 6,000