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Interest in significant operating subsidiaries (Details) - ZAR (R) R in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Disclosure of subsidiaries [line items] |  |  |  |
Assets to which significant restrictions apply | R 0 |  | R 0 |
Sasol Mining Holdings Pty Ltd |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |
Investment at cost | R 9,163 | R 8,638 | 9,163 | R 8,638
Sasol Technology Pty Ltd |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |
Investment at cost | R 316 | R 316 | 316 | 316
Sasol Financing Ltd |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |
Investment at cost | R 422 | R 5,479 | 422 | 5,479
Sasol Investment Company Pty Ltd |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |
Investment at cost | R 62,580 | R 54,665 | 62,580 | 54,665
Sasol South Africa Ltd |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |
Investment at cost | R 28,066 | R 19,704 | 28,066 | 19,704
Sasol Middle East And India Pty Ltd |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |
Investment at cost | R 10,092 | R 10,094 | 10,092 | 10,094
Sasol Africa Pty Ltd |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |
Investment at cost | R 8,069 | R 7,270 | 8,069 | 7,270
Sasol Oil Pty Ltd |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 75.00% | 75.00% |  |
Investment at cost | R 657 | R 651 | 657 | 651
Sasol New Energy Holdings Pty Ltd |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |
Investment at cost | R 932 | R 1,545 | R 932 | R 1,545
The Republic Of Mozambique Pipeline Investment Company Pty Ltd (Rompco) |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 50.00% | 50.00% |  |
Sasol Financing International Limited |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% | 100.00% | 100.00%
Sasol Germany Gmbh |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |
Sasol Italy Spa |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |
Sasol Mining Pty Ltd |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 90.00% | 90.00% |  |
Sasol Canada Holdings Limited |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |
Sasol Chemicals USA LLC |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Percentage of equity owned | 100.00% | 100.00% |  |

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- Definition The amount in the consolidated financial statements of the assets of the group to which significant restrictions (for example, statutory, contractual and regulatory restrictions) apply on the entity's ability to access or use the assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2017-01-01 -Paragraph 13 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_13_c&doctype=Standard -URIDate 2017-03-09 + Details
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