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Share-based payment reserve - Sasol Khanyisa Employee Share Ownership (Details)
12 Months Ended
Jun. 01, 2018
ZAR (R)
Jun. 30, 2019
ZAR (R)
item
Jun. 30, 2018
ZAR (R)
Jun. 30, 2017
ZAR (R)
Share-based payment transaction        
Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets   R 1,659,000,000 R 3,776,000,000 R 463,000,000
Tier 1 - Khanyisa Employee Share Ownership Plan (ESOP)        
Share-based payment transaction        
Cost of rights granted for participants R 0      
Value of rights granted R 100,000      
Service period 3 years      
Vesting period 3 years      
Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets   R 628,000,000 52,000,000  
SSA (Tier 2 and Khanyisa Public)        
Share-based payment transaction        
Number of groups of participants | item   2    
Percentage of dividend utilised for repayment of vendor funding and financial cost   97.50%    
Trickle dividends percentage   2.50%    
SSA (Tier 2 and Khanyisa Public) | Prime rate        
Share-based payment transaction        
Percentage of base rate used to calculate financing cost   75.00%    
Tier 2 - Khanyisa ESOP        
Share-based payment transaction        
Service period 10 years      
Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets   R 324,000,000 35,000,000  
Percentage of transfer of beneficial ownership   9.20%    
Khanyisa Public        
Share-based payment transaction        
Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets     R 1,762,000,000  
Percentage of transfer of beneficial ownership   9.20%