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Provision for Environmental Rehabilitation - Reconciliation of the Total Liability for Environmental Rehabilitation (Details) - Provision for environmental rehabilitation - ZAR (R) R in Millions | 12 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018
Reconciliation of changes in other provisions |  |
Balance at beginning of year | R 3,309 | R 2,638
Change in estimate - Balance sheet | (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 | 0 | 663
Transfer | 37 | 0
Translation | (8) | 19
Balance at end of year | 3,054 | 3,309
PNG operations |  |
Reconciliation of changes in other provisions |  |
Balance at beginning of year | 969 |
Balance at end of year | 994 | R 969
Moab Khotsong |  |
Reconciliation of changes in other provisions |  |
Change in estimate - Balance sheet | R (240) |

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