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Cash-settled share-based payment provision - Sasol Share Appreciation Rights Scheme (Details) - Share Appreciation Right (SARs)
 12 Months Ended
Jun. 30, 2019
item
shares
Jun. 30, 2018
item
Share-based payment transaction    
Number of rights granted in cash settled arrangement | item 4,928,846 7,118,321
Number of shares issued under the plan | shares 0  
Number of months in which estate of deceased employee can exercise the rights 12 months  
Number of months in which employee can exercise the rights on retrenchment or retirement 12 months  
Number of days after publication of the results of price sensitive information in which the employees have to wait to deal with the company's equity securities 2 days