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Material Accounting Policies and Basis of Presentation - Disclosure of principal subsidiaries of the company in consolidated financial statements (Details)
12 Months Ended
Apr. 30, 2024
Apr. 30, 2023
Canam Alpine Ventures Ltd. [Member]    
Disclosure of subsidiaries [line items]    
Country of incorporation and operation Canada  
Ownership interest 100.00% 100.00%
Minera Canam S.A. DE C.V. [Member]    
Disclosure of subsidiaries [line items]    
Country of incorporation and operation Mexico  
Ownership interest 100.00% 100.00%
Operaciones Canam Alpine S.A. DE C.V. [Member]    
Disclosure of subsidiaries [line items]    
Country of incorporation and operation Mexico  
Ownership interest 100.00% 100.00%
Panuco Royalty Corp. (formerly Vizsla Royalty Corp., Vizsla Copper Corp., and 1283303 B.C. Ltd.) [Member]    
Disclosure of subsidiaries [line items]    
Country of incorporation and operation Canada  
Ownership interest 100.00% 100.00%
Canam Royalties Mexico, S.A. de C.V. [Member]    
Disclosure of subsidiaries [line items]    
Country of incorporation and operation Mexico  
Ownership interest 100.00% 100.00%
Vizsla Royalties Corp. [Member]    
Disclosure of subsidiaries [line items]    
Country of incorporation and operation Canada  
Ownership interest 100.00%