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Brumadinho dam failure - Provision for individual indemnification and other commitments (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Provisions.    
Provision $ 4,580 $ 4,522
Geotechnical safety of the remaining structures    
Provisions.    
Provision 317 267
Individual indemnification    
Provisions.    
Provision $ 115 $ 179