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Related party transactions - Material transactions (Details)
R in Millions
12 Months Ended
Jun. 30, 2021
ZAR (R)
item
Jun. 30, 2020
ZAR (R)
Jun. 30, 2019
ZAR (R)
Disclosure of transactions between related parties      
Impairment of outstanding balances R 0    
Purchases by subsidiaries from related parties R 108 R 769 R 813
Number of related parties other than joint ventures and associates, with whom material transactions took place | item 0    
Joint ventures      
Disclosure of transactions between related parties      
Sales and services rendered from subsidiaries to related parties R 2,635 672 1,474
Purchases by subsidiaries from related parties 8 691 718
Associates      
Disclosure of transactions between related parties      
Purchases by subsidiaries from related parties R 100 R 78 R 95