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PROVISION FOR ENVIRONMENTAL REHABILITATION - Decommissioning Restoration and Rehabilitation Costs (Details) - ZAR (R)
R in Millions
 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Disclosure of other provisions [line items]      
Opening balance R 562.1 R 517.7  
Unwinding of provision 56.3 46.2 R 45.0
Change in estimate of environmental rehabilitation recognised in profit or loss (a) (11.6) (7.1) (2.2)
Change in estimate of environmental rehabilitation recognised to decommissioning asset 34.7 20.4  
Environmental rehabilitation payments to reduce the liability (24.7) (15.1)  
Closing balance 616.8 562.1 R 517.7
Ongoing rehabilitation expenditure (16.1) (26.8)  
Total cash spent on environmental rehabilitation (40.8) (41.9)  
To reduce decommissioning liabilities      
Disclosure of other provisions [line items]      
Environmental rehabilitation payments to reduce the liability (23.4) (13.8)  
To reduce restoration liabilities      
Disclosure of other provisions [line items]      
Environmental rehabilitation payments to reduce the liability R (1.3) R (1.3)