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Cash flows reconciliation (Details Narrative)
R$ in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Nov. 30, 2022
USD ($)
Nov. 30, 2022
BRL (R$)
Aug. 30, 2022
USD ($)
Aug. 30, 2022
BRL (R$)
Jul. 31, 2022
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2022
BRL (R$)
May 31, 2022
USD ($)
Jan. 31, 2022
USD ($)
Jan. 31, 2022
BRL (R$)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
BRL (R$)
Dec. 31, 2021
USD ($)
Jan. 31, 2023
USD ($)
Jan. 31, 2023
BRL (R$)
Mar. 31, 2021
IfrsStatementLineItems [Line Items]                                
Loans and borrowings from third-parties                     $ 1,275   $ 930      
Principal interest debentures                           $ 24 R$ 124  
Settle infrastructure debentures     $ 170 R$ 865                        
Purchase of treasury shares           $ 1,291 R$ 6,520       2,785 [1]   [1]      
Repurchase bond premium                     113 R$ 568        
Line of credit prepaid                 $ 200 R$ 993            
Bonds 3. 75 Percent [Member]                                
IfrsStatementLineItems [Line Items]                                
Interest rate on bonds                               3.75%
Amount of bond redeemed                     884 4,946        
Premium paid on early redemption of debt security                     63 354        
S O F R [Member]                                
IfrsStatementLineItems [Line Items]                                
Loans and borrowings from third-parties $ 300 R$ 1,582                            
J B I C [Member]                                
IfrsStatementLineItems [Line Items]                                
Loans and borrowings from third-parties $ 200 R$ 1,055                            
S M B C Bank [Member]                                
IfrsStatementLineItems [Line Items]                                
Loans and borrowings from third-parties         $ 150                      
M U F G Bank [Member]                                
IfrsStatementLineItems [Line Items]                                
Loans and borrowings from third-parties               $ 200                
Bank Of Nova Scotia [Member]                                
IfrsStatementLineItems [Line Items]                                
Loans and borrowings from third-parties                 425 2,361            
Commercial Bank [Member]                                
IfrsStatementLineItems [Line Items]                                
Loans and borrowings from third-parties                     350 1,953        
Japanese Development Bank [Member]                                
IfrsStatementLineItems [Line Items]                                
Loans and borrowings from third-parties                     $ 280 R$ 1,563        
New Development Bank [Member]                                
IfrsStatementLineItems [Line Items]                                
Loans and borrowings from third-parties                 $ 300 R$ 1,633            
[1] On April 27, 2022, the Board of Directors approved the common shares buyback program, limited to a maximum of 500,000,000 common shares or their respective ADRs.