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INVESTMENTS IN REHABILITATION OBLIGATION FUNDS - Narrative (Details) - ZAR (R) R in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Disclosure of detailed information about financial instruments [line items]
Changes in methods and assumptions used in preparing sensitivity analysis	A change of 100 basis points (bp) in interest rates at the reporting date would have increased/(decreased) equity and profit/(loss) by the amounts shown below. This analysis assumes that all other variables, in particular the balance of the funds, remain constant. The analysis excludes income tax
Financial guarantee contracts [member]
Disclosure of detailed information about financial instruments [line items]
Estimated financial effect of contingent liabilities	R 427.3	R 427.3

X

- Definition

The description of changes in the methods and assumptions used in preparing a sensitivity analysis for the types of market risk to which the entity is exposed. [Refer: Market risk [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]]

+ References

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