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Material accounting policies - Revenue and Other Income Recognition and Property, Plant and Equipment (Details)
12 Months Ended
Jun. 30, 2024
Buildings  
Disclosure of detailed information about property, plant and equipment [abstract]  
Useful life measured as period of time, property, plant and equipment 20 years
Plant and Equipment | Minimum  
Disclosure of detailed information about property, plant and equipment [abstract]  
Useful life measured as period of time, property, plant and equipment 3 years
Plant and Equipment | Maximum  
Disclosure of detailed information about property, plant and equipment [abstract]  
Useful life measured as period of time, property, plant and equipment 10 years
Mining Hardware  
Disclosure of detailed information about property, plant and equipment [abstract]  
Useful life measured as period of time, property, plant and equipment 5 years
Mining Hardware | Minimum  
Disclosure of detailed information about property, plant and equipment [abstract]  
Useful life measured as period of time, property, plant and equipment 2 years
Mining Hardware | Maximum  
Disclosure of detailed information about property, plant and equipment [abstract]  
Useful life measured as period of time, property, plant and equipment 4 years