v3.26.3
ASSET HELD FOR SALE - Schedule of assets held for sale (Details) - ZAR (R)
R in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Disclosure of analysis of single amount of discontinued operations [line items]        
Property, plant and equipment R 11,918.4 R 8,542.2    
Capital prepayments 114.6 188.3    
Trade and other receivables 458.0 329.6    
Cash and cash equivalents 2,770.0 1,306.2 R 521.5 R 2,471.4
Asset held for sale 0.0 120.8    
Trade and other payables (1,012.8) (954.4)    
Total liabilities 0.0 (9.9)    
Proceeds from disposal of subsidiary 147.5 0.0 0.0  
Less: Amount paid to minority shareholders 15.2 0.0 0.0  
Loss on disposal of subsidiary (4.8) 0.0 R 0.0  
Disposal groups classified as held for sale        
Disclosure of analysis of single amount of discontinued operations [line items]        
Loss on disposal of subsidiary (4.8)      
Disposal groups classified as held for sale | Stellar        
Disclosure of analysis of single amount of discontinued operations [line items]        
Property, plant and equipment 85.8 48.4    
Capital prepayments 56.9 56.9    
Trade and other receivables 2.5 15.4    
Cash and cash equivalents 0.0 0.1    
Asset held for sale 145.2 120.8    
Trade and other payables (8.1) (8.5)    
Loan payable 0.0 (1.4)    
Total liabilities (8.1) (9.9)    
Net carrying amount 137.1 110.9    
Proceeds from disposal of subsidiary 147.5      
Loss on disposal of subsidiary (4.8)      
Increase (decrease) in property, plant and equipment R 15.2 R 105.3