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SUBSEQUENT EVENTS - Narrative (Details) - ZAR (R)
R / shares in Units, R in Millions
12 Months Ended
Sep. 18, 2023
Aug. 23, 2023
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Oct. 25, 2023
Disclosure of non-adjusting events after reporting period [line items]            
Dividends recognised as distributions to owners     R 515.3 R 513.6 R 641.3  
Major ordinary share transactions            
Disclosure of non-adjusting events after reporting period [line items]            
Dividend per share approved by directors (in ZAR cents per share)   R 0.65 R 0.65      
Dividends recognised as distributions to owners R 559.4          
Major ordinary share transactions | Conditional shares            
Disclosure of non-adjusting events after reporting period [line items]            
Issued share capital (in shares)           2,955,805