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Share capital - Issued Share Capital (Details) - ZAR (R)
R in Millions
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Disclosure of classes of share capital        
Equity R 201,524 R 193,197 R 152,471 R 155,917
Treasury shares 10,373,430 10,243,580 10,469,584  
Share capital        
Disclosure of classes of share capital        
Equity R 9,888 R 9,888 R 9,888 R 9,888