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OTHER INVESTMENTS - Fair value of investments (Details) - At fair value - Rand Refinery Proprietary Limited ("Rand Refinery") - ZAR (R) R in Millions | 12 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022
Disclosure of fair value measurement of assets [line items] |  |
Balance at the beginning of the year | R 136.1 | R 119.3
Fair value adjustment on equity investments at fair value through other comprehensive income | 20.2 | 16.8
Balance at the end of the year | R 156.3 | R 136.1

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- Definition The amount of investments in equity instruments that the entity has designated at fair value through other comprehensive income. [Refer: At fair value [member]; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 11A -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_11A_c&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 8 -Subparagraph h -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_8_h&doctype=Standard -URIDate 2023-03-23 + Details
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