v3.26.3
Streaming Arrangement - copper stream reconciliations compound derivative (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    
Fair value movements on streaming arrangements   (854) R 0 R 0
Translation   (168) 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 Compound Derivative        
Disclosure of streaming arrangement [Line Items]        
Balance at beginning of year   0 0  
Fair value movements on streaming arrangements   361 0  
Translation   (5) 0  
Balance at end of year   147 0 R 0
Streaming contract liabilities   32 0  
Streaming contract liabilities   R 115 R 0  
Copper stream | Copper Compound Derivative | MAC Copper        
Disclosure of streaming arrangement [Line Items]        
Acquisitions through business combinations Copper Compound Derivative R (209)