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TRADE AND OTHER RECEIVABLES - Disclosure of ageing of trade and other receivables (Details) - ZAR (R)
R in Millions
Jun. 30, 2018
Jun. 30, 2017
Not impaired [member]    
Disclosure of financial assets that are either past due or impaired [line items]    
Trade and other receivables past due R 15.3 R 10.4
Impaired [member]    
Disclosure of financial assets that are either past due or impaired [line items]    
Trade and other receivables past due R 9.2 R 9.7