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LONG-TERM DEBT AND CREDIT FACILITIES - Revolving credit and term loan (Details) - USD ($)
12 Months Ended
Mar. 07, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 15, 2023
Long-term debt        
Carrying Amount   $ 2,232,600,000 $ 2,592,900,000  
Repayment of debt   $ 960,000,000.0 340,000,000.0  
Standby fee (as percent of unused availability)   0.29%    
Tasiast Mauritanie Ltd. S.A.        
Long-term debt        
Interest rate (as a percent)       4.38%
Revolving credit facility        
Long-term debt        
Carrying Amount $ 1,000,000,000.0 $ 6,800,000 206,700,000  
Maximum borrowing capacity   1,500,000,000.0    
Letters of credit   $ 6,700,000    
Interest rate (as a percent)   1.45%    
Revolving credit facility | Great Bear acquisition        
Long-term debt        
Amount drawn from letter of credit 1,100,000,000.0      
Repayment of debt $ 1,000,000,000.0      
Letter of credit | Minimum        
Long-term debt        
Interest rate (as a percent)   0.967%    
Letter of credit | Maximum        
Long-term debt        
Interest rate (as a percent)   1.45%    
Term Loan        
Long-term debt        
Carrying Amount   $ 999,100,000 $ 998,200,000  
Interest rate (as a percent)   1.25% 1.25%