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Remeasurement items affecting operating profit - Cash Generating Units (Details) R in Millions, $ in Millions, $ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2018 ZAR (R) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 ZAR (R) | Jun. 30, 2019 CAD ($) R / $ $ / kJ | Jun. 30, 2019 USD ($) | Jun. 30, 2019 ZAR (R) | Jun. 30, 2018 CAD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2018 ZAR (R) | Jun. 30, 2017 USD ($) | Jun. 30, 2017 ZAR (R) | Jun. 30, 2016 CAD ($) | Jun. 30, 2016 USD ($) | Jun. 30, 2016 ZAR (R) | Jun. 30, 2015 CAD ($) | Jun. 30, 2015 ZAR (R) | Jun. 30, 2014 CAD ($) | Jun. 30, 2014 ZAR (R) | Jun. 30, 2019 USD ($) R / $ $ / kJ | Jun. 30, 2019 ZAR (R) R / $ $ / kJ
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | R 17,502 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  | 18,451 |  |  | R 9,115 |  | R 2,477 |  |  |  |  |  |  |  |  |
Reversal of impairment loss |  |  |  |  |  | 949 |  |  | 354 |  | R 1,136 |  |  |  |  |  |  |  |  |
Tetramerization value chain (LCCP) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 7,403 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  | $ 526.0 | 7,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Project cost overrun that would impact recoverable amount | $ |  |  |  |  | 200.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in gas prices (as a percent) |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% | 5.00%
Change in recoverable amount due to change in gas prices |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6.0 | R 85
Decrease in recoverable amount due to increase in project costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5.0 | R 70
Ethylene Oxide / Ethylene Glycol value chain (LCCP) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 5,460 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  | 388.0 | 5,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Project cost overrun that would impact recoverable amount | $ |  |  |  |  | 200.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in gas prices (as a percent) |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% | 5.00%
Change in recoverable amount due to change in gas prices |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 55.0 | R 774
Decrease in recoverable amount due to increase in project costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 30.0 | 422
Ammonia value chain |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 3,347 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  | 3,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in recoverable amount due to change in gas prices |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | R (230)
Increase in ammonia prices (as a percent) |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% | 5.00%
Increase in recoverable amount due to increase in ammonia prices |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | R 1,138
Increase in gas prices (per unit) | $ / kJ |  |  |  | 0.000001 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.000001 | 0.000001
Canadian shale gas asset |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 1,947 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  | $ 181 |  | 1,900 | $ 281 |  | 2,800 |  |  | $ 880 |  | R 9,900 | $ 133 | R 1,300 | $ 540 | R 5,300 |  |
Assets |  |  |  | $ 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | R 22,000
Chlor Vinyls value chain |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | (949) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  |  |  |  | 5,200 |  |  |  |  |  |  |  |  |  |  |
Reversal of impairment loss | R 949 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in exchange rate | R / $ |  |  |  | 0.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.50 | 0.50
Increase in recoverable amount of CGU due to change in exchange rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | R 872
High Purity Alumina assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 205 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sasol Wilmar Alcohol Industries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 83 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other cash-generating units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sasol Petroleum Mozambique - PSA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  |  |  | $ 94.0 | R 1,100 |  |  |  |  |  |  |  |  |  |  |
Discount rate - risk adjusted |  |  |  |  |  |  | 13.23% | 13.23% | 13.23% | 12.16% | 12.16% |  |  |  |  |  |  |  |  |
Increase in capital costs (as a percent) |  |  |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% | 20.00%
Decrease in recoverable amount due to increase in capital costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 84.0 | R 1,183
Change in gas prices (as a percent) |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% | 10.00%
Increase in discount rate (as a percentage) |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.50% | 0.50%
Sasol Petroleum Mozambique - PSA | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in recoverable amount due to change in gas prices |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10.0 | R 141
Decrease in recoverable amount due to change in discount rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 27.0 | 380
Sasol Petroleum Mozambique - PSA | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in recoverable amount due to change in gas prices |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 37.0 | 521
Decrease in recoverable amount due to change in discount rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 29.0 | R 408
US Gas-To-Liquids (GTL) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  |  |  |  |  | $ 130.0 | R 1,700 |  |  |  |  |  |  |  |  |
Costs scrapped |  | $ 83.0 | R 1,100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lake Charles Chemicals Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  |  |  |  |  |  |  |  | $ 65.0 | 956 |  |  |  |  |  |
Reversal of impairment loss |  |  |  |  |  |  |  |  |  | $ 65.0 | R 849 |  |  |  |  |  |  |  |  |
Costs scrapped |  |  |  |  | $ 48.0 | 682 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Project cost overrun that would impact recoverable amount | $ |  |  |  |  |  |  |  |  |  |  |  |  | 2,000.0 |  |  |  |  |  |  |
Previous estimated useful life (in years) |  |  |  |  |  |  |  |  |  | 25 years | 25 years |  |  |  |  |  |  |  |  |
Estimated useful life (in years) |  |  |  |  |  |  |  |  |  | 50 years | 50 years |  |  |  |  |  |  |  |  |
US phenolics |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  |  |  |  |  | $ 38.4 | R 527 |  | $ 11.2 | R 165 |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 13,511 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  | 14,161 |  |  | R 7,623 |  | 415 |  |  |  |  |  |  |  |  |
Reversal of impairment loss |  |  |  |  |  | 650 |  |  |  |  | 272 |  |  |  |  |  |  |  |  |
Property, plant and equipment | Tetramerization value chain (LCCP) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 3,929 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment | Ethylene Oxide / Ethylene Glycol value chain (LCCP) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 4,662 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment | Ammonia value chain |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 3,347 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment | Canadian shale gas asset |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 1,947 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment | Chlor Vinyls value chain |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | (650) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment | High Purity Alumina assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 205 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment | Sasol Wilmar Alcohol Industries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 65 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment | Other cash-generating units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets under construction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 3,973 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  | 4,272 |  |  | 1,492 |  | 1,942 |  |  |  |  |  |  |  |  |
Reversal of impairment loss |  |  |  |  |  | 299 |  |  | 14 |  | 849 |  |  |  |  |  |  |  |  |
Assets under construction | Tetramerization value chain (LCCP) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 3,474 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets under construction | Ethylene Oxide / Ethylene Glycol value chain (LCCP) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 798 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets under construction | Chlor Vinyls value chain |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | (299) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets and goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 11 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  | 11 |  |  |  |  | R 120 |  |  |  |  |  |  |  |  |
Reversal of impairment loss |  |  |  |  |  |  |  |  | 56 |  |  |  |  |  |  |  |  |  |  |
Intangible assets and goodwill | Sasol Wilmar Alcohol Industries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 11 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  | 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reversal of impairment loss |  |  |  |  |  |  |  |  | R 15 |  |  |  |  |  |  |  |  |  |  |
Other assets | Sasol Wilmar Alcohol Industries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment loss (reversal of impairment loss) |  |  |  |  |  | R 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition The discount rate used in the current estimate of the present value of the future cash flows expected to be derived from an asset or cash-generating unit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2018-01-01 -Paragraph 130 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2018-03-01&anchor=para_130_g&doctype=Standard -URIDate 2018-03-16 + Details
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X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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X
- Definition The amount of impairment loss recognised in profit or loss. [Refer: Impairment loss; Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2018-01-01 -Paragraph 126 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2018-03-01&anchor=para_126_a&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2018-01-01 -Paragraph 129 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2018-03-01&anchor=para_129_a&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of impairment loss or reversal of impairment loss recognised in profit or loss. [Refer: Impairment loss recognised in profit or loss; Reversal of impairment loss recognised in profit or loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 99 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_99&doctype=Standard -URIDate 2018-03-16 + Details
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