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Schedule of financial assets at fair value through profit and loss (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]    
Non current financial assets at fair value through profit and loss $ 29 $ 11
Current financial assets at fair value through profit and loss 458 325
Shares [Member]    
IfrsStatementLineItems [Line Items]    
Non current financial assets at fair value through profit and loss 29 11
Current financial assets at fair value through profit and loss 120 29
Government Securities [Member]    
IfrsStatementLineItems [Line Items]    
Current financial assets at fair value through profit and loss 278 204
Corporate Bonds [Member]    
IfrsStatementLineItems [Line Items]    
Current financial assets at fair value through profit and loss 19
Investment funds [member]    
IfrsStatementLineItems [Line Items]    
Current financial assets at fair value through profit and loss $ 41 $ 92