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Deferred tax - Attributable to tax jurisdictions (Details) - ZAR (R) R in Millions | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
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Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | R 21,812 | R 22,778 | R 20,302
South Africa |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | 22,501 | 23,699 |
United States of America |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | 301 | (370) |
GERMANY |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | (431) | (210) |
MOZAMBIQUE |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | 766 | 1,036 |
Other Country |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | R (1,325) | R (1,377) |

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- Definition The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] + References 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 + Details
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