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TRADE AND OTHER RECEIVABLES - Market Risk (Details) R in Millions, $ in Millions | Jun. 30, 2021 USD ($) | Jun. 30, 2021 ZAR (R) | Jun. 30, 2020 USD ($) | Jun. 30, 2020 ZAR (R)
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Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items] |  |  |  |
Trade receivables |  | R 56.5 |  | R 23.1
Currency Risk [member] |  |  |  |
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items] |  |  |  |
Percentage of reasonably possible change, market risk | 20.00% | 20.00% |  |
Strengthening of the Rand against the US Dollar |  | R 0.0 |  | (2.3)
Weakening of the Rand against the US Dollar |  | R 0.0 |  | R 2.3
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 | $ | $ 0.0 |  | $ 1.3 |

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- Definition Increase (decrease) in equity and profit loss due to reasonably possible strengthening of foreign exchane rate. + References No definition available. + Details
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