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Financial risk management (Details 9)
$ in Millions
 6 Months Ended
Jun. 30, 2025
USD ($)
Later than one year [member]  
IfrsStatementLineItems [Line Items]  
Expected realization $ (2,653)
Later than one year and not later than two years [member]  
IfrsStatementLineItems [Line Items]  
Expected realization (5,242)
Later than two years and not later than three years [member]  
IfrsStatementLineItems [Line Items]  
Expected realization (5,542)
Later than three years and not later than four years [member]  
IfrsStatementLineItems [Line Items]  
Expected realization (3,732)
Later than four years and not later than five years [member]  
IfrsStatementLineItems [Line Items]  
Expected realization (3,217)
Later than five years [member]  
IfrsStatementLineItems [Line Items]  
Expected realization (935)
Average [Member]  
IfrsStatementLineItems [Line Items]  
Expected realization $ (21,321)