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Provision for Silicosis Settlement (Tables) | 12 Months Ended
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Jun. 30, 2019
Other provisions, contingent liabilities and contingent assets [Abstract] |
Reconciliation of the Total Provision for the Silicosis Settlement | The following is a reconciliation of the total provision for environmental rehabilitation:
| SA rand
Figures in million | 2019 |  | 2018 |
Balance at beginning of year | 3 309 |  | 2 638 |
Change in estimate - Balance sheet 1 | (439 | ) | (175 | )
Change in estimate - Income statement | 33 |  | 67 |
Utilisation of provision | (86 | ) | (94 | )
Time value of money and inflation component of rehabilitation costs | 208 |  | 191 |
Acquisitions 2 | — |  | 663 |
Transfer 3 | 37 |  | — |
Translation | (8 | ) | 19 |
Balance at end of year | 3 054 |  | 3 309 |
1 The biggest contributor was Moab Khotsong, where a decrease of R240 million was recognised following on alignment of the methodology and other assumptions including rates. 2 The 2018 acquisition relates to the Moab Khotsong operations (refer to note 12). 3 Refer to note 28 for details. The following is a reconciliation of the total provision for the silicosis settlement:
| SA rand
Figures in million | 2019 |  | 2018 |
Balance at beginning of year | 925 |  | 917 |
Change in estimate | (62 | ) | (68 | )
Time value of money and inflation component | 79 |  | 76 |
Balance at end of year | 942 |  | 925 |
Disclosure of the Impact of a Reasonable Change in Certain Key Assumptions | The impact of a reasonable change in certain key assumptions would increase or decrease the provision amount by the following amounts:
| SA rand
Figures in million | 2019 |  | 2018 |
Effect of an increase in the assumption: |  |
Change in benefit take-up rate 1 | 66 |  | 65 |
Change in silicosis prevalence 2 | 66 |  | 65 |
Change in disease progression rates 3 | 33 |  | 31 |
Effect of a decrease in the assumption: |  |
Change in benefit take-up rate 1 | (66 | ) | (65 | )
Change in silicosis prevalence 2 | (66 | ) | (65 | )
Change in disease progression rates 3 | (33 | ) | (31 | )
1 Change in benefit take-up rate: the take-up rate does not affect the legal cost allocation, but a 10% change results in a proportionate change in the other values. 2 Change in the silicosis prevalence: the assumptions that will result in a change in the estimated number of cases are either a 10% change in the assumed labour number or a 10% change in the disease risk. 3 Change in disease progression rates: a one year shorter/longer disease progression period was used. This assumption is not applicable to the dependant or TB classes.

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- Definition The disclosure of other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2018-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2018-03-01&anchor=para_84&doctype=Standard -URIDate 2018-03-16 + Details
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