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Financial instruments and risk management - Market risk sensitivity analysis - Narrative (Details) | 12 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023
Interest rate risk |  |
Disclosure of detailed information about financial instruments [line items] |  |
Sensitivity analysis for types of market risk, percentage of reasonably possible change in risk variable | 0.50% |
Currency exchange risk |  |
Disclosure of detailed information about financial instruments [line items] |  |
Sensitivity analysis for types of market risk, percentage of reasonably possible change in risk variable | 10.00% | 10.00%

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