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CAPITAL MANAGEMENT - Narrative (Details) - ZAR (R)
R in Millions
Jul. 31, 2018
Jun. 30, 2018
Revolving credit facility ABSA bank [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings R 300.0  
Overdraft borrowing facilities [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings   R 100.0