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Property, plant and equipment- Capital commitments (Details) - Property, plant and equipment - ZAR (R) R in Millions | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
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Capital commitments (excluding equity accounted investments) |  |  |
Authorised and contracted for | R 212,848 | R 179,172 |
Authorised but not yet contracted for | 43,097 | 47,338 |
Less expenditure to the end of year | (195,850) | (156,583) |
Total capital commitments | 60,095 | 69,927 | R 90,736
Capital commitments to sustain existing operations | 29,654 | 26,925 |
Capital commitments to expand operations | R 30,441 | R 43,002 |

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- Definition The amount of capital commitments that have been authorised by the entity, but for which the entity has not entered into a contract. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of future capital expenditures that the entity is committed to make. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of capital expenditures that the entity is committed to make for expanding the operations. + References No definition available. + Details
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- Definition The amount of capital expenditures that the entity is committed to make for sustaining the existing operations. + References No definition available. + Details
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- Definition Total amount of cumulative expenditures incurred towards capital commitment till the end of the year. + References No definition available. + Details
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