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Segments - Geographic segmentation (Details) - ZAR (R) R in Millions | 12 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Disclosure of operating segments [line items] |  |  |
Turnover | R 181,461 | R 172,407 | R 172,942
Earnings before interest and tax (EBIT) | 17,747 | 31,705 | 24,239
Non-current assets | 357,978 | 310,985 | 282,581
Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 203,677 | 193,975 | 194,336
Non-current assets | 352,384 | 307,281 | 278,578
Deferred Tax Assets And Liabilities |  |  |
Disclosure of operating segments [line items] |  |  |
Non-current assets | 4,096 | 3,082 | 3,389
Post-retirement benefit assets |  |  |
Disclosure of operating segments [line items] |  |  |
Non-current assets | 1,498 | 622 | 614
South Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 88,460 | 81,997 | 81,748
Earnings before interest and tax (EBIT) | 8,585 | 20,444 | 24,748
South Africa | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Non-current assets | 143,493 | 139,398 | 139,422
Rest of Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 6,555 | 7,364 | 7,576
Earnings before interest and tax (EBIT) | 635 | 954 | 3,595
Rest of Africa | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Non-current assets | 18,443 | 17,856 | 12,136
Europe |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 43,722 | 38,060 | 39,933
Earnings before interest and tax (EBIT) | 6,012 | 3,910 | 2,353
Europe | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Non-current assets | 15,389 | 13,925 | 13,903
North America |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 23,104 | 23,163 | 23,403
Earnings before interest and tax (EBIT) | (2,316) | 1,871 | (9,375)
North America | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Non-current assets | 165,742 | 125,983 | 100,247
South America |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 1,928 | 2,065 | 2,532
Earnings before interest and tax (EBIT) | 279 | 260 | 748
South America | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Non-current assets | 1 | 1 | 1
Asia, Australia and Middle East |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 17,692 | 19,758 | 17,750
Earnings before interest and tax (EBIT) | 4,552 | 4,266 | 2,170
Asia, Australia and Middle East | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Non-current assets | 9,316 | 10,118 | 12,869
Mining |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 3,446 | 2,946 | 2,360
Earnings before interest and tax (EBIT) | 5,244 | 3,725 | 4,739
Mining | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 19,797 | 18,962 | 16,975
Non-current assets | 25,197 | 23,489 |
Mining | South Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Earnings before interest and tax (EBIT) | 3,796 | 2,775 | 4,232
Mining | Europe |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 2,691 | 2,040 | 1,496
Earnings before interest and tax (EBIT) | 1,131 | 658 | 321
Mining | Asia, Australia and Middle East |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 755 | 906 | 864
Earnings before interest and tax (EBIT) | 317 | 292 | 186
Exploration And Production International |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 1,610 | 1,750 | 1,706
Earnings before interest and tax (EBIT) | (3,683) | 585 | (11,714)
Exploration And Production International | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 4,198 | 4,084 | 4,211
Non-current assets | 14,217 | 18,142 |
Exploration And Production International | South Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Earnings before interest and tax (EBIT) | 1,008 | 1,307 | 860
Exploration And Production International | Rest of Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 341 | 355 | 379
Earnings before interest and tax (EBIT) | (1,282) | 707 | 506
Exploration And Production International | Europe |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 985 | 835 | 861
Earnings before interest and tax (EBIT) | 194 | (503) | (1,694)
Exploration And Production International | North America |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 284 | 560 | 466
Earnings before interest and tax (EBIT) | (3,595) | (728) | (10,922)
Exploration And Production International | Asia, Australia and Middle East |  |  |
Disclosure of operating segments [line items] |  |  |
Earnings before interest and tax (EBIT) | (8) | (198) | (464)
Energy |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 69,110 | 64,254 | 63,818
Earnings before interest and tax (EBIT) | 14,081 | 11,218 | 14,069
Energy | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 69,773 | 64,772 | 64,341
Non-current assets | 64,526 | 60,840 |
Energy | South Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 65,827 | 60,814 | 60,312
Earnings before interest and tax (EBIT) | 13,064 | 12,248 | 12,504
Energy | Rest of Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 3,282 | 3,438 | 3,502
Earnings before interest and tax (EBIT) | 926 | (85) | 2,588
Energy | Europe |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 1 | 2 | 3
Earnings before interest and tax (EBIT) |  | (47) | 47
Energy | North America |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover |  |  | 1
Earnings before interest and tax (EBIT) | (1,010) | (1,756) | (753)
Energy | Asia, Australia and Middle East |  |  |
Disclosure of operating segments [line items] |  |  |
Earnings before interest and tax (EBIT) | 1,101 | 858 | (317)
Base Chemicals |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 39,517 | 37,794 | 36,424
Earnings before interest and tax (EBIT) | 588 | 6,862 | 5,606
Base Chemicals | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 40,091 | 38,414 | 37,795
Non-current assets | 119,584 | 102,700 |
Base Chemicals | South Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 19,569 | 17,997 | 18,040
Earnings before interest and tax (EBIT) | (2,929) | 2,723 | 3,626
Base Chemicals | Rest of Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 2,076 | 2,716 | 2,429
Earnings before interest and tax (EBIT) | 350 | 185 | 261
Base Chemicals | Europe |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 6,540 | 5,392 | 4,932
Earnings before interest and tax (EBIT) | 722 | 642 | 505
Base Chemicals | North America |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 5,341 | 2,643 | 2,286
Earnings before interest and tax (EBIT) | 531 | 1,966 | 94
Base Chemicals | South America |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 410 | 307 | 354
Earnings before interest and tax (EBIT) | 61 | 39 | 40
Base Chemicals | Asia, Australia and Middle East |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 5,581 | 8,739 | 8,383
Earnings before interest and tax (EBIT) | 1,853 | 1,307 | 1,080
Performance Chemicals |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 67,738 | 65,147 | 68,526
Earnings before interest and tax (EBIT) | 8,183 | 8,763 | 10,156
Performance Chemicals | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 69,766 | 67,227 | 70,906
Non-current assets | 122,187 | 97,003 |
Performance Chemicals | South Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 3,064 | 3,186 | 3,396
Earnings before interest and tax (EBIT) | 1,263 | 1,516 | 2,627
Performance Chemicals | Rest of Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 856 | 821 | 1,179
Earnings before interest and tax (EBIT) | 88 | 121 | 220
Performance Chemicals | Europe |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 33,505 | 29,791 | 32,641
Earnings before interest and tax (EBIT) | 3,620 | 3,076 | 2,695
Performance Chemicals | North America |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 17,479 | 19,960 | 20,650
Earnings before interest and tax (EBIT) | 1,708 | 2,304 | 2,224
Performance Chemicals | South America |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 1,518 | 1,758 | 2,178
Earnings before interest and tax (EBIT) | 218 | 221 | 708
Performance Chemicals | Asia, Australia and Middle East |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 11,316 | 9,631 | 8,482
Earnings before interest and tax (EBIT) | 1,286 | 1,525 | 1,682
Group Functions |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 40 | 516 | 108
Earnings before interest and tax (EBIT) | (6,666) | 552 | 1,383
Group Functions | Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 52 | 516 | 108
Non-current assets | 6,673 | 5,107 |
Group Functions | South Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Earnings before interest and tax (EBIT) | (7,617) | (125) | 899
Group Functions | Rest of Africa |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover |  | 34 | 87
Earnings before interest and tax (EBIT) | 553 | 26 | 20
Group Functions | Europe |  |  |
Disclosure of operating segments [line items] |  |  |
Earnings before interest and tax (EBIT) | 345 | 84 | 479
Group Functions | North America |  |  |
Disclosure of operating segments [line items] |  |  |
Earnings before interest and tax (EBIT) | 50 | 85 | (18)
Group Functions | Asia, Australia and Middle East |  |  |
Disclosure of operating segments [line items] |  |  |
Turnover | 40 | 482 | 21
Earnings before interest and tax (EBIT) | R 3 | R 482 | R 3

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