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REVENUE - Market Risk (Details) - ZAR (R) R in Millions | 12 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019
US Dollar gold price sensitivity [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Percentage of reasonably possible change, market risk | 20.00% |  |
US Dollar gold price sensitivity [member] | Percentage decrease [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Gains (losses) from change in fair value of derivatives recognised in profit and loss | R (1,053.8) | R (837.0) | R (552.4)
Percentage of reasonably possible change, market risk | 20.00% | 20.00% | 20.00%
US Dollar gold price sensitivity [member] | Percentage increase [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Gains (losses) from change in fair value of derivatives recognised in profit and loss | R 1,053.8 | R 837.0 | R 552.4
Percentage of reasonably possible change, market risk | 20.00% | 20.00% | 20.00%
Rand to US Dollar exchange rate sensitivity [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Percentage of reasonably possible change, market risk | 20.00% |  |
Rand to US Dollar exchange rate sensitivity [member] | Percentage decrease [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Gains (losses) from change in fair value of derivatives recognised in profit and loss | R (1,053.8) | R (837.0) | R (552.4)
Percentage of reasonably possible change, market risk | 20.00% | 20.00% | 20.00%
Rand to US Dollar exchange rate sensitivity [member] | Percentage increase [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Gains (losses) from change in fair value of derivatives recognised in profit and loss | R 1,053.8 | R 837.0 | R 552.4
Percentage of reasonably possible change, market risk | 20.00% | 20.00% | 20.00%

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_85&doctype=Standard -URIDate 2020-01-01 + Details
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