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RESULTS FROM OPERATING ACTIVITIES - Cost of sales (Details) - ZAR (R) R in Millions | 12 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Analysis of income and expense [abstract] |  |  |
Cost of sales | R (2,937.9) | R (2,553.9) | R (2,347.7)
Operating costs | (2,692.1) | (2,471.1) | (2,207.1)
Movement in gold in process and finished inventories - Gold Bullion | 3.1 | 32.6 | 24.5
Depreciation | (270.8) | (169.1) | (168.0)
Change in estimate of environmental rehabilitation | 21.9 | 60.0 | 2.9
Retrenchment costs | 0.0 | (6.3) | 0.0
Operating cost [abstract] |  |  |
Consumable stores | (801.0) | (866.5) | (784.6)
Labour including short term incentives | (573.0) | (476.7) | (417.4)
Electricity | (420.9) | (399.4) | (369.0)
Specialist service providers | (447.5) | (437.1) | (326.9)
Water | (47.0) | (44.1) | (49.9)
Pre-production costs capitalised | 0.0 | 93.7 | 0.0
Retrenchment costs [Abstract] |  |  |
Voluntary staff retrenchments | R 0.0 | R 6.3 | R 0.0

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