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Long-term debt - Amortised cost summary (Details) - ZAR (R) R in Millions | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
--- | --- | --- | ---
Long-term debt |  |  |
Unamortised loan costs | R (703) | R (375) |
Total long-term debt | 124,068 | 104,834 | R 102,643
Secured Debt |  |  |
Long-term debt |  |  |
Long-term debt, before unamortised costs | 29 | 67 |
Unsecured debt |  |  |
Long-term debt |  |  |
Long-term debt, before unamortised costs | R 124,742 | R 105,142 |

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- Definition The nominal or face amount of a financial instrument, used to calculate payments made on that instrument. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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