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Accounting policies - Held for sale (Details) - ZAR (R)
R in Millions
6 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Accounting policies        
Environmental rehabilitation obligation R 11,805 R 11,355 R 8,435 R 8,146
Property, plant and equipment R 66,906 R 61,338 R 76,909  
Neo Energy Metals Plc        
Accounting policies        
Proportion of ownership interest in associate 40.00%      
Assets and liabilities classified as held for sale        
Accounting policies        
Consideration to be received R 500      
Cash portion of consideration to be received 250      
Environmental rehabilitation obligation 451      
Property, plant and equipment 30      
Other assets 40      
Assets and liabilities classified as held for sale | Neo Energy Metals Plc        
Accounting policies        
Value of equity consideration R 250