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Investment in Associates - Additional Information (Details) - USD ($)
$ in Millions
5 Months Ended
Jan. 26, 2023
Jan. 19, 2023
Jun. 05, 2020
Mar. 31, 2022
Disclosure of associates [line items]        
Gain (Loss) Concurrent With Redesignation Of Investment       $ 44.6
Triple Flag | Major ordinary share transactions [member]        
Disclosure of associates [line items]        
Cash Received For Interest   $ 58.8    
Shares Received For Interest   3,954,471    
Proceeds from sale of shares in associate (Note 13) $ 46.5      
Commissions on investment dispositions $ 1.3      
Maverix Metals Inc. [member]        
Disclosure of associates [line items]        
Proportion of ownership interest in associate     17.00%  
Maverix Metals Inc. [member] | Major ordinary share transactions [member]        
Disclosure of associates [line items]        
Shares In Interest Exchange   25,974,571    
Maverix Sale | Major ordinary share transactions [member]        
Disclosure of associates [line items]        
Payments for share issue costs   $ 86.7    
Maverix Sale | Triple Flag | Major ordinary share transactions [member]        
Disclosure of associates [line items]        
Number of shares issued   45,100,000