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PROPERTY PLANT AND EQUIPMENT (Details) - ZAR (R) R in Millions | 12 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | R 2,621.1 |  |
Additions - property, plant and equipment owned | 395.7 | R 182.7 | R 353.7
Additions - right-of-use assets | 16.7 | 18.0 |
Depreciation | (252.5) | (270.8) | (169.1)
Lease modifications | 2.3 | 7.5 |
Closing balance | 2,809.7 | 2,621.1 |
Financial Effect Of Changes In Accounting Policy [Member] | IFRS 16 [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance |  | 30.9 |
Closing balance |  |  | 30.9
Right-of-use Assets [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 44.9 |  |
Closing balance | 49.1 | 44.9 |
Property, plant and equipment owned [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 2,576.2 |  |
Closing balance | 2,760.6 | 2,576.2 |
Mine plant facilities and equipment [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 1,186.0 |  |
Closing balance | 1,530.3 | 1,186.0 |
Mine plant facilities and equipment [member] | Financial Effect Of Changes In Accounting Policy [Member] | IFRS 16 [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance |  | 7.5 |
Closing balance |  |  | 7.5
Mine plant facilities and equipment [member] | Right-of-use Assets [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 8.2 |  |
Closing balance | 20.6 | 8.2 |
Mine plant facilities and equipment [member] | Property, plant and equipment owned [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 1,177.8 |  |
Closing balance | 1,509.7 | 1,177.8 |
Mine property and development [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 1,178.5 |  |
Closing balance | 1,178.6 | 1,178.5 |
Mine property and development [member] | Financial Effect Of Changes In Accounting Policy [Member] | IFRS 16 [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance |  | 23.4 |
Closing balance |  |  | 23.4
Mine property and development [member] | Right-of-use Assets [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 36.7 |  |
Closing balance | 28.5 | 36.7 |
Mine property and development [member] | Property, plant and equipment owned [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 1,141.8 |  |
Closing balance | 1,150.1 | 1,141.8 |
Exploration assets [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 256.6 |  |
Depreciation | 0.0 |  |
Closing balance | 100.8 | 256.6 |
Exploration assets [member] | Financial Effect Of Changes In Accounting Policy [Member] | IFRS 16 [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance |  | 0.0 |
Closing balance |  |  | 0.0
Exploration assets [member] | Right-of-use Assets [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 0.0 |  |
Closing balance | 0.0 | 0.0 |
Exploration assets [member] | Property, plant and equipment owned [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 256.6 |  |
Closing balance | 100.8 | 256.6 |
Gross carrying amount [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 4,616.8 | 4,519.7 |
Additions - property, plant and equipment owned | 395.7 | 182.7 |
Additions - right-of-use assets | 16.7 | 18.0 |
Lease modifications | 2.3 | 7.5 |
Lease derecognitions | (1.0) | (26.8) |
Disposals | (188.1) | (1.6) |
Change in estimate of decommissioning asset | 26.4 | (113.6) |
Transfers between classes of property, plant and equipment | 0.0 | 0.0 |
Closing balance | 4,868.8 | 4,616.8 | 4,519.7
Gross carrying amount [member] | Mine plant facilities and equipment [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 2,203.5 | 2,156.2 |
Additions - property, plant and equipment owned | 237.7 | 121.2 |
Additions - right-of-use assets | 16.7 | 3.8 |
Lease modifications | 0.0 | 0.0 |
Lease derecognitions | (1.0) | (26.7) |
Disposals | (54.7) | (1.6) |
Change in estimate of decommissioning asset | 14.9 | (56.7) |
Transfers between classes of property, plant and equipment | 187.2 | (0.2) |
Closing balance | 2,604.3 | 2,203.5 | 2,156.2
Gross carrying amount [member] | Mine property and development [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 2,147.0 | 2,106.8 |
Additions - property, plant and equipment owned | 113.3 | 46.5 |
Additions - right-of-use assets | 0.0 | 14.2 |
Lease modifications | 2.3 | 7.5 |
Lease derecognitions | 0.0 | (0.1) |
Disposals | (133.4) | 0.0 |
Change in estimate of decommissioning asset | 14.2 | (51.5) |
Transfers between classes of property, plant and equipment | 10.6 | 0.2 |
Closing balance | 2,154.0 | 2,147.0 | 2,106.8
Gross carrying amount [member] | Exploration assets [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | 266.3 | 256.7 |
Additions - property, plant and equipment owned | 44.7 | 15.0 |
Additions - right-of-use assets | 0.0 | 0.0 |
Lease modifications | 0.0 | 0.0 |
Lease derecognitions | 0.0 | 0.0 |
Disposals | 0.0 | 0.0 |
Change in estimate of decommissioning asset | (2.7) | (5.4) |
Transfers between classes of property, plant and equipment | (197.8) | 0.0 |
Closing balance | 110.5 | 266.3 | 256.7
Accumulated depreciation and impairment [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | (1,995.7) | (1,744.4) |
Depreciation | (252.5) | (270.8) |
Lease derecognitions | 1.0 | 17.9 |
Disposals | 188.1 | 1.6 |
Closing balance | (2,059.1) | (1,995.7) | (1,744.4)
Accumulated depreciation and impairment [member] | Mine plant facilities and equipment [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | (1,017.5) | (909.9) |
Depreciation | (112.2) | (127.1) |
Lease derecognitions | 1.0 | 17.9 |
Disposals | 54.7 | 1.6 |
Closing balance | (1,074.0) | (1,017.5) | (909.9)
Accumulated depreciation and impairment [member] | Mine property and development [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | (968.5) | (824.8) |
Depreciation | (140.3) | (143.7) |
Lease derecognitions | 0.0 | 0.0 |
Disposals | 133.4 | 0.0 |
Closing balance | (975.4) | (968.5) | (824.8)
Accumulated depreciation and impairment [member] | Exploration assets [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Opening balance | (9.7) | (9.7) |
Depreciation | 0.0 | 0.0 |
Lease derecognitions | 0.0 | 0.0 |
Disposals | 0.0 | 0.0 |
Closing balance | R (9.7) | R (9.7) | R (9.7)

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