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Reserves - Additional Information (Detail) - AUD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Disclosure of reserves within equity [abstract] |  |
Share based payment reserve for Employee Share Option plan | $ 0.7 | $ 0.5
Share based payment reserve for Employee Share Option plan Expired | $ 1.0 | $ 0.7

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