The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2017-01-01
-Paragraph 81
-Subparagraph g
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_g_i&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 54
-Subparagraph o
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_o&doctype=Standard
-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 56
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_56&doctype=Standard
-URIDate 2017-03-09

Name:	ifrs-full_DeferredTaxAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

INCOME TAX EXPENSE - DEFERRED TAX (Details) - ZAR (R) R in Millions	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Deferred tax assets and liabilities relate to the following:
Deferred tax assets	R 8.7	R 5.0
Deferred tax liabilities	163.7	140.5
Net deferred mining and income tax liability	155.0	135.5	R 187.9
Provision For Deferred Tax Asset [Member]
Deferred tax assets and liabilities relate to the following:
Deferred tax assets	8.7	5.0
Property, plant and equipment [member]
Deferred tax assets and liabilities relate to the following:
Deferred tax liabilities	261.5	223.8
Other provisions [member]
Deferred tax assets and liabilities relate to the following:
Deferred tax liabilities	(95.0)	(80.2)
Other temporary differences [member]
Deferred tax assets and liabilities relate to the following:
Deferred tax liabilities	R 2.8	R 3.1