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Long-term provisions - Environmental provisions, Risk-free rates and Impact of changes to discount rates (Details) - Environmental - ZAR (R)
R in Millions
Jun. 30, 2024
Jun. 30, 2023
Provisions    
Assumed percentage change in discount rate 1.00% 1.00%
Increase in the discount rate R (2,185) R (4,250)
amount capitalised to property, plant and equipment (917) (858)
income recognised in income statement (1,268) (3,392)
Decrease in the discount rate 2,802 5,338
amount capitalised to property, plant and equipment 1,375 1,518
expense recognised in income statement 1,427 3,820
Investments restricted for mining rehabilitation purposes 816 749
Indemnities for mining rehabilitation purposes R 2,860 R 2,527
South Africa | Minimum    
Provisions    
Risk-free interest rate used to discount estimated cash flows related to provisions 8.10% 8.70%
South Africa | Maximum    
Provisions    
Risk-free interest rate used to discount estimated cash flows related to provisions 10.90% 10.90%
Europe | Minimum    
Provisions    
Risk-free interest rate used to discount estimated cash flows related to provisions 2.00% 2.00%
Europe | Maximum    
Provisions    
Risk-free interest rate used to discount estimated cash flows related to provisions 3.60% 4.00%
United States of America | Minimum    
Provisions    
Risk-free interest rate used to discount estimated cash flows related to provisions 3.20% 2.70%
United States of America | Maximum    
Provisions    
Risk-free interest rate used to discount estimated cash flows related to provisions 5.40% 5.70%