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Provision for Environmental Rehabilitation (Tables) | 12 Months Ended
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Jun. 30, 2019
Provision For Environmental Rehabilitation [Abstract] |
Disclosure of Rates Used in Calculation of Provision | The following rates were used in the calculation of the provision:
| 2019 | 2018 | 2017
| % | % | %
South African operations |  |  |
Inflation rate | 5.25 | 5.50 | 6.50
Discount rates |  |  |
- 12 months | 6.50 | 6.70 | 7.50
- one to five years | 6.85 | 7.00 | 7.60
- six to nine years | 8.50 | 8.20 | 8.40
- ten years or more | 9.60 | 8.60 | 9.10
PNG operations: |  |  |
Inflation rate | 5.00 | 6.00 | 6.60
Discount rate | 6.25 | 6.25 | 6.25
Reconciliation of the Total Liability for Environmental Rehabilitation | 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 Future Net Undiscounted Obligation | While the ultimate amount of rehabilitation costs to be incurred in the future is uncertain, the group has estimated that, based on current environmental and regulatory requirements, the total undiscounted cost for the operations, in the current monetary terms, is as follows:
| SA rand
Figures in million | 2019 |  | 2018 |
Future net undiscounted obligation |  |
Ultimate estimated rehabilitation cost | 4 139 |  | 4 338 |
Amounts invested in environmental trust funds (refer to note 16) | (3 273 | ) | (3 238 | )
Total future net undiscounted obligation | 866 |  | 1 100 |

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