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Lease liabilities (Details 2) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Discount rate 5.5127%  
Average Period 11 years 4 months 24 days  
Recoverable taxes $ 555  
Lease liabilities $ 23,845 $ 23,043
Previously Reported [Member] | Vessels [member]    
IfrsStatementLineItems [Line Items]    
Discount rate 4.0518%  
Average Period 5 years 9 months 18 days  
Recoverable taxes $ 255  
Lease liabilities $ 7,421 6,201
Previously Reported [Member] | Others [Member]    
IfrsStatementLineItems [Line Items]    
Discount rate 2.5774%  
Average Period 2 years 7 months 6 days  
Recoverable taxes $ 14  
Lease liabilities $ 149 202
After Readjustment [Member] | Vessels [member] | Foreign countries [member]    
IfrsStatementLineItems [Line Items]    
Discount rate 4.4127%  
Average Period 4 years 2 months 12 days  
Lease liabilities $ 838 1,431
After Readjustment [Member] | Vessels [member] | Brazil [Member]    
IfrsStatementLineItems [Line Items]    
Discount rate 7.8958%  
Recoverable taxes $ 120  
Lease liabilities $ 1,298 850
After Readjustment [Member] | Vessels [member] | BRAZIL    
IfrsStatementLineItems [Line Items]    
Average Period 2 years 9 months 18 days  
After Readjustment [Member] | Others [Member] | Brazil [Member]    
IfrsStatementLineItems [Line Items]    
Discount rate 9.8752%  
Recoverable taxes $ 73  
Lease liabilities $ 789 710
After Readjustment [Member] | Others [Member] | BRAZIL    
IfrsStatementLineItems [Line Items]    
Average Period 7 years 8 months 12 days  
After Readjustment [Member] | Platforms [member] | Foreign countries [member]    
IfrsStatementLineItems [Line Items]    
Discount rate 5.7393%  
Average Period 13 years 10 months 24 days  
Lease liabilities $ 12,340 13,059
After Readjustment [Member] | Platforms [member] | BRAZIL    
IfrsStatementLineItems [Line Items]    
Average Period 22 years 8 months 12 days  
After Readjustment [Member] | Properties [member] | Brazil [Member]    
IfrsStatementLineItems [Line Items]    
Discount rate 8.0496%  
Recoverable taxes $ 93  
Lease liabilities $ 1,010 $ 590