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Costs and expenses by nature (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Costs And Expenses By Nature      
Expenses related to Brumadinho event $ (483) $ (930) $ (1,079)
Reversal (increase) in provisions related to de-characterization of dam and asset decommissioning obligation 172 (229) (128)
Provision for litigations (303) (229) (153)
Profit sharing program (189) (147) (131)
Expenses related with socio-environmental commitments (360) (181) (180)
Other (326) 218 (51)
Total $ (1,489) $ (1,498) $ (1,722)