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Share capital - Issued Share Capital (Details) - ZAR (R)
R / shares in Units, R in Millions
12 Months Ended
Sep. 07, 2018
Jun. 30, 2019
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2018
Disclosure of classes of share capital          
Equity   R 223,109 R 152,471 R 155,917 R 226,831
Shares held by Sasol Foundation Trust and Sasol Khanyisa Employee Share Ownership Plan     10,469,584 13,969,621  
Repurchase and cancellation of shares   16,085,199      
Share capital          
Disclosure of classes of share capital          
Equity   R 9,888 R 9,888 R 9,888 R 15,775
Sasol Inzalo share transaction          
Disclosure of classes of share capital          
Repurchase and cancellation of shares 16,085,199        
Share repurchase price R 542.11