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REVENUE - Disaggregation (Details) - ZAR (R)
R in Millions
12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Revenue [Abstract]      
Gold Revenue R 4,179.3 R 2,758.8 R 2,486.4
Silver Revenue 5.7 3.3 4.0
Total Revenue R 4,185.0 R 2,762.1 R 2,490.4