XML 515 R112.htm IDEA: XBRL DOCUMENT v3.24.1
Impairment, Net of Reversal of Impairment of Investments and Assets - Sensitivity Analysis on Cash Generating Units with Impairments (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Tarkwa    
Disclosures of impairment of investments and assets [line items]    
Increase (decrease) in recoverable amount as a result of one hundred dollars per ounce decrease in gold price   $ (101.5)
Increase (decrease) in recoverable amount as a result of one hundred dollars per ounce increase in gold price   101.5
Increase (decrease) in recoverable amount as a result of one percent decrease in discount rate   31.7
Increase (decrease) in recoverable amount as a result of one percent increase in discount rate   (29.7)
Peru cash-generating unit    
Disclosures of impairment of investments and assets [line items]    
Increase (decrease) in recoverable amount as a result of one hundred dollars per ounce decrease in gold price $ (11.1) (17.1)
Increase (decrease) in recoverable amount as a result of one hundred dollars per ounce increase in gold price 11.0 17.1
Increase (decrease) in recoverable amount as a result of one percent decrease in discount rate 14.9 19.4
Increase (decrease) in recoverable amount as a result of one percent increase in discount rate $ (14.1) $ (18.5)