v3.25.2
Related parties (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Aggregate continuing and discontinued operations [member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses $ (396) $ (233) $ (781) $ (471)
Financial result 95 (197) 216 (246)
Net operating revenue 134 173 250 325
Alianca Geracao De Energia S A [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses   (24)   (51)
Pelletizing Companies [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (3) (75) (29) (152)
Financial result (10) (7) (20) (16)
MRS LogisticaS.A. [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (112) (126) (214) (216)
Norte Energia S.a. [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (15) (16) (28) (31)
Other Joint Ventures [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (62) 14 (127) (7)
Financial result       (3)
Net operating revenue 9 8 16 17
Total for all joint ventures [member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (192) (227) (398) (457)
Financial result (10) (7) (20) (19)
Net operating revenue 9 8 16 17
Vli S.a. [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (10) (4) (22) (10)
Financial result (1)   (2) (1)
Net operating revenue 97 109 165 191
PTVI [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (138)   (297) (1)
Financial result       3
Anglo American [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (48)   (48)  
Financial result 7   7  
Other Associates [Member]        
IfrsStatementLineItems [Line Items]        
Financial result (6)   (3)  
Total for all associates [member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (196) (4) (367) (11)
Financial result     2 2
Net operating revenue 97 109 165 191
Bradesco [Member]        
IfrsStatementLineItems [Line Items]        
Financial result 105 (191) 234 (230)
Mitsui Co. Ltd [Member]        
IfrsStatementLineItems [Line Items]        
Net operating revenue 27 56 61 117
Cosan [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (8) (2) (16) (3)
Net operating revenue 1   8  
Bancodo Brasil [Member]        
IfrsStatementLineItems [Line Items]        
Financial result   1   1
Major Shareholders [Member]        
IfrsStatementLineItems [Line Items]        
Cost and operating expenses (8) (2) (16) (3)
Financial result 105 (190) 234 (229)
Net operating revenue $ 28 $ 56 $ 69 $ 117