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PROPERTY PLANT AND EQUIPMENT - Narrative (Details) - ZAR (R) R in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Disclosure of detailed information about property, plant and equipment [line items]
Contracted for but not provided for in the consolidated financial statements	R 130.6	R 18.6
Mine plant facilities and equipment [Member] | Bottom of Range [member] | Ergo [member]
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	4 years	3 years	4 years
Mine plant facilities and equipment [Member] | Bottom of Range [member] | FWGR [member]
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	4 years	5 years
Mine plant facilities and equipment [Member] | Top of range [member] | Ergo [member]
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	13 years	11 years	12 years
Mine plant facilities and equipment [Member] | Top of range [member] | FWGR [member]
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	20 years	15 years

X

- Definition

The amount of contractual commitments for the acquisition of property, plant and equipment. [Refer: Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2019-01-01
-Paragraph 74
-Subparagraph c
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-URIDate 2019-03-27

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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

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- Definition

The useful life, measured as period of time, used for property, plant and equipment. [Refer: Property, plant and equipment]

+ References

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-Name IAS
-Number 16
-IssueDate 2019-01-01
-Paragraph 73
-Subparagraph c
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-URIDate 2019-03-27

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