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Lease - Amounts recognised (Details) - ZAR (R)
R in Millions
 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Leases      
Non-current lease liabilities R 13,906 R 15,825 R 7,445
Current lease liabilities 1,771 1,894  
Lease liabilities 15,677 17,719  
Right of use assets 12,903 13,816  
Additions to right of use assets 1,899 3,466  
Decrease in right of use assets, foreign exchange movements (1,200) (1,700)  
Decrease in lease liabilities, foreign exchange movements (1,200) (1,700)  
Decrease in right of use assets, reassessment of exercise an extension option (561)    
Decrease in lease liabilities, reassessment of exercise an extension option (561)    
Decrease in right of use assets, other movements (281)    
Decrease in lease liabilities, other movements (281)    
Disposal groups held-for-sale      
Leases      
Lease liabilities   2,200  
Right of use assets   2,200  
Land      
Leases      
Right of use assets 241 184  
Buildings and improvements      
Leases      
Right of use assets 5,153 6,446  
Plant, equipment and vehicles      
Leases      
Right of use assets 7,508 7,179  
Mineral assets      
Leases      
Right of use assets R 1 R 7