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Cash flows reconciliation (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]      
December 31, 2022 $ 11,181 $ 12,180  
Additions 1,950 1,275  
Payments (i) (658) (2,300) $ (1,927)
Interest paid (ii) (743) (785)  
Cash flow from financing activities 549 (1,810)  
Effect of exchange rate (25) 78  
Interest accretion 766 733  
Non-cash changes 741 811  
December 31, 2023 12,471 11,181 12,180
Quoted In The Secondary Market [Member]      
IfrsStatementLineItems [Line Items]      
December 31, 2022 6,497 7,974  
Additions 1,500  
Payments (i) (542) (1,441)  
Interest paid (ii) (454) (650)  
Cash flow from financing activities 504 (2,091)  
Effect of exchange rate 19 126  
Interest accretion 454 488  
Non-cash changes 473 614  
December 31, 2023 7,474 6,497 7,974
Debt Contract In Brazil [Member]      
IfrsStatementLineItems [Line Items]      
December 31, 2022 280 380  
Additions  
Payments (i) (50) (220)  
Interest paid (ii) (24) (45)  
Cash flow from financing activities (74) (265)  
Effect of exchange rate 20 7  
Interest accretion 24 158  
Non-cash changes 44 165  
December 31, 2023 250 280 380
Debt Contracts On The International Markets [Member]      
IfrsStatementLineItems [Line Items]      
December 31, 2022 4,404 3,826  
Additions 450 1,275  
Payments (i) (66) (639)  
Interest paid (ii) (265) (90)  
Cash flow from financing activities 119 546  
Effect of exchange rate (64) (55)  
Interest accretion 288 87  
Non-cash changes 224 32  
December 31, 2023 $ 4,747 $ 4,404 $ 3,826