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Property, plant and equipment- Segmentation and capital commitment (Details) - Property, plant and equipment R in Millions, $ in Millions | Jun. 30, 2019 USD ($) | Jun. 30, 2019 ZAR (R) | Jun. 30, 2018 USD ($) | Jun. 30, 2018 ZAR (R) | Jun. 30, 2017 ZAR (R)
--- | --- | --- | --- | --- | ---
Property, plant and equipment |  |  |  |  |
Capital commitments |  | R 60,095 |  | R 69,927 | R 90,736
Originally presented |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  |  |  | 63,276 |
Increase due to review of forecast |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  |  | $ 484 | 6,651 |
Mining |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 2,372 |  | 2,640 | 3,099
Exploration And Production International |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 19,795 |  | 18,811 | 19,431
Energy |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 10,390 |  | 10,320 | 10,327
Base Chemicals |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 16,504 |  | 21,125 | 30,375
Performance Chemicals |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 10,434 |  | 16,432 | 26,743
Group Functions |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 600 |  | 599 | R 761
Lake Charles Chemicals Project |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 11,856 |  | 22,084 |
Estimated financial effect of contingent liabilities | $ | $ 216 |  |  |  |
Mozambique exploration and development |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 17,375 |  | 17,108 |
Sixth Fine Ash Dam (environmental) |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 2,302 |  | 3,720 |
Shutdown and major statutory maintenance |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 5,949 |  | 6,172 |
Renewal projects |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 4,578 |  | 5,003 |
Mulalo project: 132 kilo volt electrical infrastructure |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 1,329 |  |  |
Steam Station 2 NOx Abatement |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 1,168 |  | 50 |
Steam Station 1 Air Quality Compliance |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 577 |  |  |
Mozambique drillling campaign and infield compression |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 915 |  |  |
Clean fuels II: To meet legislated fuel specifications |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 418 |  |  |
China Ethoxylation Plant |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 135 |  | 577 |
Air separation unit |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  |  |  | 470 |
Refurbishment of equipment |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 409 |  | 445 |
Etame field development |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 380 |  |  |
Mine geographical expansions |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 406 |  | 426 |
Natref air quality compliance projects |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 353 |  | 17 |
Impumelelo Colliery to maintain Brandspruit Colliery operation |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 220 |  | 357 |
Coal tar filtration east and west project |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 356 |  | 779 |
Other capital commitments |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 11,369 |  | 12,719 |
Within one year |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | 32,194 |  | 44,801 |
One to five years |  |  |  |  |
Property, plant and equipment |  |  |  |  |
Capital commitments |  | R 27,901 |  | R 25,126 |

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