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Taxation - Disclosure of Potential Future Tax Deductions (Details) - ZAR (R) R in Millions | Jun. 30, 2019 | Jun. 30, 2018
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Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Amount of deferred tax not recognised, deductible temporary differences | R 12,935 | R 12,215
Unredeemed capital expenditure available for utilisation against future mining taxable income |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Potential future tax deductions | 39,725 | 38,711
Deductible temporary differences for which no deferred tax asset is recognised | 35,038 | 34,021
Tax losses carried forward utilisable against mining taxable income |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Potential future tax deductions | 5,494 | 4,334
Deductible temporary differences for which no deferred tax asset is recognised | 5,109 | 4,196
Capital Gains Tax (CGT) losses available to be utilised against future CGT gains |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Potential future tax deductions | 571 | 571
Deductible temporary differences for which no deferred tax asset is recognised | 571 | 571
Hidden Valley | Unredeemed capital expenditure available for utilisation against future mining taxable income |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Potential future tax deductions | 16,333 | 17,030
Avgold | Unredeemed capital expenditure available for utilisation against future mining taxable income |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Potential future tax deductions | 19,086 | 16,991
Randfontein | Unredeemed capital expenditure available for utilisation against future mining taxable income |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Potential future tax deductions | 2,134 | 2,163
Moab Khotsong | Unredeemed capital expenditure available for utilisation against future mining taxable income |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Potential future tax deductions | R 1,755 | R 2,091

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- Definition Deductible Temporary Differences For Which No Deferred Tax Asset Is Recognised, Amount Of Deferred Tax Asset + References No definition available. + Details
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- Definition The amount of deductible temporary differences for which no deferred tax asset is recognised in the statement of financial position. [Refer: Temporary differences [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_e&doctype=Standard -URIDate 2018-03-16 + Details
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