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Assets under construction - Asset rollforward (Details) - ZAR (R) R in Millions | 12 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Assets Under Construction [Line Items] |  |  |
Balance at beginning of period | R 130,734 |  |
Additions | 52,806 | R 60,312 | R 70,849
Finance costs capitalised | 3,568 | 2,764 | 2,253
Disposals and scrapping | (1,200) | (105) | (963)
Balance at end of period | 165,361 | 130,734 |
Assets under construction |  |  |
Assets Under Construction [Line Items] |  |  |
Balance at beginning of period | 130,734 | 104,011 |
Additions | 52,806 | 60,312 |
to sustain existing operations | 19,127 | 16,888 |
to expand operations | 33,679 | 43,424 |
Net reclassification from/(to) other assets | 9 |  |
Finance costs capitalised | 3,568 | 2,764 |
Net impairment of assets under construction | (1,790) | (1,093) |
Reduction in rehabilitation provision capitalised (note 30) | (472) | (753) |
Projects capitalised | (25,769) | (23,673) |
Translation of foreign operations | 7,475 | (10,729) |
Disposals and scrapping | (1,200) | (105) |
Balance at end of period | 165,361 | 130,734 | 104,011
Property, plant and equipment under construction |  |  |
Assets Under Construction [Line Items] |  |  |
Balance at beginning of period | 129,124 | 102,185 |
Additions | 51,871 | 59,771 |
to sustain existing operations | 18,889 | 16,653 |
to expand operations | 32,982 | 43,118 |
Net reclassification from/(to) other assets | 42 | (29) |
Finance costs capitalised | 3,568 | 2,764 |
Net impairment of assets under construction | (1,478) | (728) |
Reduction in rehabilitation provision capitalised (note 30) | (341) | (726) |
Projects capitalised | (25,315) | (23,433) |
Translation of foreign operations | 7,464 | (10,575) |
Disposals and scrapping | (1,152) | (105) |
Balance at end of period | 163,783 | 129,124 | 102,185
Other intangible assets under development |  |  |
Assets Under Construction [Line Items] |  |  |
Balance at beginning of period | 1,245 | 1,470 |
Additions | 321 | 313 |
to sustain existing operations | 238 | 235 |
to expand operations | 83 | 78 |
Net reclassification from/(to) other assets | (33) | 29 |
Net impairment of assets under construction |  | (176) |
Projects capitalised | (454) | (240) |
Translation of foreign operations | 46 | (151) |
Balance at end of period | 1,125 | 1,245 | 1,470
Exploration and evaluation assets |  |  |
Assets Under Construction [Line Items] |  |  |
Balance at beginning of period | 365 | 356 |
Additions | 614 | 228 |
to expand operations | 614 | 228 |
Net impairment of assets under construction | (312) | (189) |
Reduction in rehabilitation provision capitalised (note 30) | (131) | (27) |
Translation of foreign operations | (35) | (3) |
Disposals and scrapping | (48) |  |
Balance at end of period | R 453 | R 365 | R 356

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- Definition The amount of interest and other costs that an entity incurs in connection with the borrowing of funds that are directly attributable to the acquisition, construction or production of a qualifying asset and which form part of the cost of that asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 23 -IssueDate 2017-01-01 -Paragraph 26 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=23&date=2017-03-01&anchor=para_26_a&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of expenditure capitalised during the construction of non-current assets that are not yet available for use. [Refer: Non-current assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 37 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_37&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition 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 No definition available. + Details
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