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Share-Based Payments - Total Costs Related to Employee Share-Based Payments (Details) - ZAR (R)
R in Millions
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Total employee share-based payments R 230 R 363
2006 share plan    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Total employee share-based payments 197 363
Sisonke ESOP    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Total employee share-based payments R 33 R 0