v3.26.1
Related parties (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Aggregate continuing and discontinued operations [member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses $ (591) $ (396) $ (1,076) $ (781)
Financial result 2 95 63 216
Net operating revenue 131 134 251 250
Pelletizing Companies [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (46) (3) (77) (29)
Financial result (8) (10) (17) (20)
Mrs Logistica S.a. [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (128) (112) (217) (214)
Norte Energia S.a. [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (25) (15) (52) (28)
Vale Oman Distribution Center [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (86) (62) (127) (127)
Vli S.a. [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (9) (10) (17) (22)
Financial result   (1)   (2)
Net operating revenue 94 97 173 165
P T V I [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (154) (138) (313) (297)
Anglo American [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (94) (48) (166) (48)
Financial result 5 7 9 7
Alianca Geracao De Energia S A [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (49)   (107)  
Other Associates And Joint Ventures [Member]        
IfrsStatementLineItems [Line Items]        
Financial result   (6)   (3)
Net operating revenue 7 9 14 16
Total for all related parties [member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (591) (388) (1,076) (765)
Financial result (3) (10) (8) (18)
Net operating revenue 101 106 187 181
Bradesco [Member]        
IfrsStatementLineItems [Line Items]        
Financial result (22) 105 18 234
Mitsui Co. Ltd [Member]        
IfrsStatementLineItems [Line Items]        
Net operating revenue 30 27 64 61
Cosan [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses   (8)   (16)
Net operating revenue   1   8
Banco Do Brasil [Member]        
IfrsStatementLineItems [Line Items]        
Financial result 27   53  
Major Shareholders [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses   (8)   (16)
Financial result 5 105 71 234
Net operating revenue $ 30 $ 28 $ 64 $ 69