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CASH AND CASH EQUIVALENTS - Market Risks (Details) - ZAR (R)
R in Millions
 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Interest rate risk [member] | Cash and Cash Equivalents [member]    
Nature and extent of market risks    
100bp increase R 19.5 R 10.0
100bp decrease (19.5) (10.0)
Strengthening of the Rand against the US Dollar [member]    
Nature and extent of market risks    
Increased/(decreased) equity and profit/(loss) (4.9) 0.0
Weakening of the Rand against the US Dollar [Member]    
Nature and extent of market risks    
Increased/(decreased) equity and profit/(loss) R 4.9 R 0.0