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Subsequent events (Details) - Sasol Inzalo share transaction - Major ordinary share transactions [member] R / shares in Units, R in Millions	2 Months Ended
	Aug. 17, 2018 ZAR (R) R / shares
Disclosure of non-adjusting events after reporting period [line items]
Approved debt to be settled	R 7,400
Approved cash top-up for value realised	R 600
Assumed share price at date of repurchase of shares | R / shares	R 500

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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.

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- Definition

The amount of cash top-up for value realised approved by the Board

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The amount of debt approved to be settled by the Board

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Assumed share price at date of repurchase of shares

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