v3.25.2
Taxes (Details 3) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
UTPs not recorded on statement of financial position (iii)    
Transfer pricing over the exportation of ores to a foreign subsidiary $ 5,820 $ 4,995
Expenses of interest on capital 1,499 1,262
Proceeding related to income tax paid abroad 501 427
Goodwill amortization 961 805
Payments to Renova Foundation 753 652
Other 476 415
Total not recorded on statement of financial position 10,010 8,556
UTPs recorded on statement of financial position    
Deduction of CSLL in Brazil 181 154
Total recorded on statement of financial position 181 154
Assessed [Member]    
UTPs not recorded on statement of financial position (iii)    
Transfer pricing over the exportation of ores to a foreign subsidiary 3,995 3,387
Expenses of interest on capital 1,499 1,262
Proceeding related to income tax paid abroad 501 427
Goodwill amortization 885 743
Payments to Renova Foundation 355 301
Other 476 415
Total not recorded on statement of financial position 7,711 6,535
UTPs recorded on statement of financial position    
Deduction of CSLL in Brazil 181 154
Total recorded on statement of financial position 181 154
Potential [Member]    
UTPs not recorded on statement of financial position (iii)    
Transfer pricing over the exportation of ores to a foreign subsidiary 1,825 1,608
Expenses of interest on capital
Proceeding related to income tax paid abroad
Goodwill amortization 76 62
Payments to Renova Foundation 398 351
Other
Total not recorded on statement of financial position 2,299 2,021
UTPs recorded on statement of financial position    
Deduction of CSLL in Brazil
Total recorded on statement of financial position