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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%

X

- 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
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No definition available.

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- Definition

The amount of investments in subsidiaries. [Refer: Subsidiaries [member]]

+ References

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- Definition

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