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Trade and other receivables - Age analysis of trade receivables (Details) R in Millions | Jun. 30, 2018 ZAR (R) customer | Jun. 30, 2017 ZAR (R) customer | Jun. 30, 2016 customer
--- | --- | --- | ---
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | R 23,742 | R 20,982 |
Number of customers representing more than ten percent of trade receivables | customer | 0 | 0 | 0
Collateral | R 0 |  |
Not past due date |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | 21,611 | R 19,537 |
Past due 0-30 days |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | 1,477 | 1,073 |
Past due 31-150 days |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | 257 | 197 |
Past due 151 days - one year |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | 93 | 22 |
More than one year |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | 304 | 153 |
Impairment |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | (199) | (158) |
Impairment | Not past due date |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | (3) | (5) |
Impairment | Past due 0-30 days |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | (5) | (7) |
Impairment | Past due 31-150 days |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | (18) | (6) |
Impairment | Past due 151 days - one year |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | (44) | (10) |
Impairment | More than one year |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables | R (129) | R (130) |

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- Definition The amount of current trade receivables. [Refer: Trade receivables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78_b&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 68 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_68&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Number of customers representing more than ten percent of trade receivables + References No definition available. + Details
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