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Financial risk management and financial instruments - Interest Rate Risk (Details) R in Millions | 12 Months Ended
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Jun. 30, 2025 ZAR (R) item | Jun. 30, 2024 ZAR (R) item
Financial risk management and financial instruments |  |
Number of open interest rate swaps | item | 0 | 0
Financial assets | R 85,517 | R 86,216
Financial liabilities | R (155,495) | R (168,266)
Variable rate as a percentage of total financial assets | 85.00% | 86.00%
Fixed rate as a percentage of total financial assets | 15.00% | 14.00%
Variable rate as a percentage of total financial liabilities | 30.00% | 38.00%
Fixed rate as a percentage of total financial liabilities | 70.00% | 62.00%
Variable |  |
Financial risk management and financial instruments |  |
Financial assets | R 37,790 | R 42,053
Financial liabilities | (30,886) | (44,471)
Net financial instruments | 6,904 | (2,418)
Fixed |  |
Financial risk management and financial instruments |  |
Financial assets | 6,895 | 7,046
Financial liabilities | (71,759) | (72,680)
Net financial instruments | R (64,864) | R (65,634)
Interest rate risk | Variable |  |
Financial risk management and financial instruments |  |
Percentage of increase in risk variable used for sensitivity analysis | 1.00% | 1.00%
Percentage of decrease in risk variable used for sensitivity analysis | 1.00% | 1.00%
Interest rate risk | Variable | South Africa |  |
Financial risk management and financial instruments |  |
Income statement impact of increase in risk variable | R 247 | R 250
Interest rate risk | Variable | Europe |  |
Financial risk management and financial instruments |  |
Income statement impact of increase in risk variable | 15 | 32
Interest rate risk | Variable | United States |  |
Financial risk management and financial instruments |  |
Income statement impact of increase in risk variable | (218) | (328)
Interest rate risk | Variable | Other |  |
Financial risk management and financial instruments |  |
Income statement impact of increase in risk variable | R 22 | R 21

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- Definition The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_25&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35H -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35H&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35M -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35M&doctype=Standard -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35N -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35N&doctype=Standard -URIDate 2024-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35I -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35I&doctype=Standard -URIDate 2024-03-27 + Details
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