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REVENUE - Disaggregation (Details) - ZAR (R)
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Revenue [Abstract]      
Gold Revenue R 2,486,400,000 R 2,336,100,000 R 2,429,700,000
Silver Revenue 4,000,000 3,800,000 3,400,000
Total Revenue R 2,490,400,000 R 2,339,900,000 R 2,433,100,000