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Investments in Associates - Movement In Investments In Associate (Details) - ZAR (R)
R in Millions
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Disclosure of associates [line items]      
Balance at beginning of year R 146 R 110  
Redemption of preference shares from associates (36) (59) R (32)
Share of profit in associate 83 94  
Balance at end of year 126 146 R 110
Rand Refinery      
Disclosure of associates [line items]      
Redemption of preference shares from associates (36) (58)  
Dividend income1 R 67 R 0