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Taxes (Details 4) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
UTPs not recorded on statement of financial position (iii)    
Transfer pricing over the exportation of ores to a foreign subsidiary $ 5,154 $ 3,782
Expenses of interest on capital 1,511 1,288
Proceeding related to income tax paid abroad 512 439
Goodwill amortization 796 801
Payments to Renova Foundation 703 559
Other 468 699
Total not recoeded on statement of financial position  9,144 7,568
UTPs recorded on statement of financial position    
Deduction of CSLL in Brazil 183 155
Total recorded on statement of financial position  183 155
Assessed [Member]    
UTPs not recorded on statement of financial position (iii)    
Transfer pricing over the exportation of ores to a foreign subsidiary 2,144 1,190
Expenses of interest on capital 1,511 1,288
Proceeding related to income tax paid abroad 512 439
Goodwill amortization 606 578
Payments to Renova Foundation 167 29
Other 468 699
Total not recoeded on statement of financial position  5,408 4,223
UTPs recorded on statement of financial position    
Deduction of CSLL in Brazil 183 155
Total recorded on statement of financial position  183 155
Not In Dispute [Member]    
UTPs not recorded on statement of financial position (iii)    
Transfer pricing over the exportation of ores to a foreign subsidiary 3,010 2,592
Expenses of interest on capital
Proceeding related to income tax paid abroad
Goodwill amortization 190 223
Payments to Renova Foundation 536 530
Other
Total not recoeded on statement of financial position  3,736 3,345
UTPs recorded on statement of financial position    
Deduction of CSLL in Brazil
Total recorded on statement of financial position