v3.26.1
Employee benefits (Details 10) - Level 3 of fair value hierarchy [member] - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
IfrsStatementLineItems [Line Items]    
Assets as at beginning of the year $ 1,598 $ 870
Return on plan assets 54 (44)
Assets purchases 853 65
Assets sold during the year (326) (84)
Translation adjustment 45 (133)
Transfer between Overfunded pension and Underfunded pension plans   924
Assets as at end of the year 2,224 1,598
Trading equity securities [member]    
IfrsStatementLineItems [Line Items]    
Assets as at beginning of the year 43 255
Transfer   (183)
Return on plan assets 12 (12)
Assets purchases 150  
Assets sold during the year (25) (4)
Translation adjustment 6 (13)
Assets as at end of the year 186 43
International Investments [Member]    
IfrsStatementLineItems [Line Items]    
Assets as at beginning of the year 117
Transfer (46) 183
Return on plan assets   (52)
Assets purchases 1  
Translation adjustment (14)  
Assets as at end of the year 72 117
Ifrs Real Estate Funds [Member]    
IfrsStatementLineItems [Line Items]    
Assets as at beginning of the year
Transfer 75  
Return on plan assets 3  
Assets as at end of the year 78
Investment property [member]    
IfrsStatementLineItems [Line Items]    
Assets as at beginning of the year 255 321
Transfer (75)  
Return on plan assets 3 1
Assets purchases 38 3
Assets sold during the year (59) (13)
Translation adjustment 22 (57)
Assets as at end of the year 184 255
Loan To Participants [Member]    
IfrsStatementLineItems [Line Items]    
Assets as at beginning of the year 143 163
Return on plan assets 24 23
Assets purchases 239 62
Assets sold during the year (242) (67)
Translation adjustment 17 (38)
Assets as at end of the year 181 143
Governmental Bonds [Member]    
IfrsStatementLineItems [Line Items]    
Assets as at beginning of the year
Transfer 46  
Assets purchases 425  
Assets as at end of the year 471
Other [Member]    
IfrsStatementLineItems [Line Items]    
Assets as at beginning of the year 1,040 131
Return on plan assets 12 (4)
Translation adjustment   (11)
Transfer between Overfunded pension and Underfunded pension plans   924
Assets as at end of the year $ 1,052 $ 1,040