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Financial risk management and financial instruments - Currency Exposure (Details) - Exchange rate - ZAR (R) R in Millions | 12 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Financial risk management and financial instruments |  |
Percentage of change in significant exposure used for sensitivity analysis | 10.00% | 10.00%
Euro |  |
Financial risk management and financial instruments |  |
Net exposure | R 79 | R 1,709
Equity impact of decrease in risk exposure | 8 | 171
Income statement impact of decrease in risk exposure | 8 | 171
Euro | External balances |  |
Financial risk management and financial instruments |  |
Net exposure on assets | 2,035 | 3,950
Net exposure on liabilities | (547) | (227)
Net exposure | 1,488 | 3,723
Euro | Balances between group companies |  |
Financial risk management and financial instruments |  |
Net exposure | (1,409) | (2,014)
US Dollar |  |
Financial risk management and financial instruments |  |
Net exposure | 20,576 | 27,401
Equity impact of decrease in risk exposure | 2,058 | 2,740
Income statement impact of decrease in risk exposure | 2,058 | 2,740
US Dollar | External balances |  |
Financial risk management and financial instruments |  |
Net exposure on assets | 5,340 | 4,581
Net exposure on liabilities | (3,631) | (2,949)
Net exposure | 1,709 | 1,632
US Dollar | Balances between group companies |  |
Financial risk management and financial instruments |  |
Net exposure | 18,867 | 25,769
Trade and other payables | Euro | External balances |  |
Financial risk management and financial instruments |  |
Net exposure on liabilities | (547) | (227)
Trade and other payables | US Dollar | External balances |  |
Financial risk management and financial instruments |  |
Net exposure on liabilities | (3,631) | (2,949)
Long-term receivables | Euro | External balances |  |
Financial risk management and financial instruments |  |
Net exposure on assets | 127 | 67
Long-term receivables | US Dollar | External balances |  |
Financial risk management and financial instruments |  |
Net exposure on assets | 645 | 745
Trade and other receivables | Euro | External balances |  |
Financial risk management and financial instruments |  |
Net exposure on assets | 429 | 564
Trade and other receivables | US Dollar | External balances |  |
Financial risk management and financial instruments |  |
Net exposure on assets | 3,912 | 2,595
Cash and cash equivalents | Euro | External balances |  |
Financial risk management and financial instruments |  |
Net exposure on assets | 1,479 | 3,319
Cash and cash equivalents | US Dollar | External balances |  |
Financial risk management and financial instruments |  |
Net exposure on assets | R 783 | R 1,241

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