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Finance debt (Details 3) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Proceeds from finance debt $ 2,880 $ 1,754
Repayment of principal (9,196) (19,107)
Repayment of interest (1,846) (1,858)
Net Cash Used In Financing Activities [Member]    
IfrsStatementLineItems [Line Items]    
Proceeds from finance debt 2,880 1,754
Repayment of principal (9,334) (19,107)
Repayment of interest (1,850) (1,858)
Finance Debt [Member] | Changes In Finance Debt [Member]    
IfrsStatementLineItems [Line Items]    
Proceeds from finance debt 2,880 1,754
Repayment of principal (9,196) (19,107)
Repayment of interest (1,846) $ (1,858)
Finance Debt [Member] | Repurchase Of Debt Securities [Member]    
IfrsStatementLineItems [Line Items]    
Repayment of principal (121)  
Finance Debt [Member] | Deposits Financing [Member]    
IfrsStatementLineItems [Line Items]    
Repayment of principal (17)  
Repayment of interest $ (4)