v3.26.3
Streaming Arrangement - copper stream reconciliations host debt (Details) - ZAR (R)
R in Millions
 12 Months Ended
Oct. 24, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Disclosure of streaming arrangement [Line Items]        
Balance at beginning of year   R 0    
Finance costs   1,928 R 698 R 796
Copper warrants delivered   (125) 0 0
Balance at end of year   5,736 0  
Streaming contract liabilities   455 0 85
Streaming contract liabilities   5,281 0 0
Copper stream        
Disclosure of streaming arrangement [Line Items]        
Balance at beginning of year   0    
Balance at end of year   2,403 0  
Copper stream | Copper Host Contract Financial Liabilities        
Disclosure of streaming arrangement [Line Items]        
Balance at beginning of year   0 0  
Finance costs   166 0  
Copper warrants delivered   (125) 0  
Increase (Decrease) Through Net Exchange Differences - Copper Host Debt   (120) 0  
Balance at end of year   2,256 0 R 0
Streaming contract liabilities   134 0  
Streaming contract liabilities   R 2,122 R 0  
Copper stream | Copper Host Contract Financial Liabilities | MAC Copper        
Disclosure of streaming arrangement [Line Items]        
Acquisitions through business combinations contingent consideration R 2,335