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TRADE AND OTHER RECEIVABLES - Market Risk (Details) - ZAR (R) R in Millions | 12 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items] |  |
Trade receivables | R 23.1 | R 0.0
Strengthening of the Rand against the US Dollar [member] |  |
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items] |  |
Net foreign exchange loss | R (2.3) | 0.0
Percentage increase or decrease in foreign exchange rates | 10.00% |
Weakening of the Rand against the US Dollar [member] |  |
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items] |  |
Net foreign exchange gain | R 2.3 | 0.0
Foreign denomination [member] |  |
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items] |  |
Trade receivables | R 1.3 | R 0.0

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