v3.26.1
Financial and capital risk management (Details 12) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Cash And Cash Equivalents Current [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure $ 7,566 $ 5,006
Cash And Cash Equivalents Current [Member] | Aa 2 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 721 391
Cash And Cash Equivalents Current [Member] | A 1 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 2,918 1,874
Cash And Cash Equivalents Current [Member] | A 2 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 1 520
Cash And Cash Equivalents Current [Member] | A 3 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 1,339 709
Cash And Cash Equivalents Current [Member] | Baa 1 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 1
Cash And Cash Equivalents Current [Member] | Baa 2 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 2 4
Cash And Cash Equivalents Current [Member] | Baa 3 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 55
Cash And Cash Equivalents Current [Member] | Ba 1 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 1,658 719
Cash And Cash Equivalents Current [Member] | Ba 2 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 872 788
Derivatives [member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 617 68
Derivatives [member] | Aa 2 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 1 1
Derivatives [member] | A 1 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 169 28
Derivatives [member] | A 2 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure   13
Derivatives [member] | A 3 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 61 2
Derivatives [member] | Ba 1 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure 198 18
Derivatives [member] | Ba 2 Rating [Member]    
IfrsStatementLineItems [Line Items]    
Credit exposure $ 188 $ 6