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ACQUISITIONS, DIVESTITURES AND CONTINUED OPERATIONS - Divestiture of Discontinued Operation - Additional Information (Details)
$ in Millions
 12 Months Ended
May 31, 2023
installment
Feb. 10, 2023
USD ($)
shares
Aug. 10, 2022
USD ($)
shares
Dec. 31, 2022
USD ($)
Jun. 15, 2022
USD ($)
ACQUISITIONS, DIVESTITURES AND CONTINUED OPERATIONS          
Cash consideration       $ 1,061.5  
Cash consideration       $ 1,027.5  
Chirano          
ACQUISITIONS, DIVESTITURES AND CONTINUED OPERATIONS          
Discount rate of deferred payment consideration       10.00%  
Number of warrant received | shares   5,000,000.0      
Percentage of equity interest disposed off     90.00%    
Total consideration     $ 225.0    
Cash consideration received     $ 60.0    
Asante shares received as consideration | shares     34,962,584    
Deferred payment consideration, due on the six-month anniversary of closing     $ 55.0    
Deferred payment consideration, due on each of the one-year and two-year anniversaries of closing     $ 36.9    
Gain (loss) on disposition       $ 0.5  
Chirano | Amendment of sale agreement          
ACQUISITIONS, DIVESTITURES AND CONTINUED OPERATIONS          
Deferred payment consideration, due on the six-month anniversary of closing   $ 55.0      
Deferred payment consideration, number of installments | installment 4        
Highland Gold Mining group          
ACQUISITIONS, DIVESTITURES AND CONTINUED OPERATIONS          
Impairment change on sale of business       $ 671.0  
Discount rate of deferred payment consideration       20.00%  
Total consideration         $ 340.0
Cash consideration received       $ 300.0  
Gain (loss) on disposition       80.9  
Deferred payment consideration       40.0  
Goodwill impairment loss       158.8  
Highland Gold Mining group | Discontinued operations          
ACQUISITIONS, DIVESTITURES AND CONTINUED OPERATIONS          
Impairment change on sale of business       671.0  
Cash consideration received       300.0  
Gain (loss) on disposition       80.9  
Chirano Mine          
ACQUISITIONS, DIVESTITURES AND CONTINUED OPERATIONS          
Gain (loss) on disposition       $ 0.5