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Streaming transactions (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]      
Fixed revenue contract liabilities realized $ 86 $ 98 $ 60
Variable revenue - additional payments received 85 94 114
Cobalt Streaming [Member]      
IfrsStatementLineItems [Line Items]      
Fixed revenue contract liabilities realized 49 55  
Variable revenue - additional payments received 11 12  
Gold Streaming [Member]      
IfrsStatementLineItems [Line Items]      
Fixed revenue contract liabilities realized 37 43 60
Variable revenue - additional payments received $ 74 $ 82 $ 114