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v3.25.2

Basis of Accounting - Additional Information (Details) - USD ($) $ in Thousands |  | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 19, 2025 | Dec. 31, 2025 | Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2023 | Aug. 30, 2025 | Jun. 30, 2022
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Loss after income tax |  |  | $ 162,791 | $ 220,242 | $ 142,521 |  |
Net cash outflows from operating activities |  |  | 158,644 | 161,015 | 120,608 |  |
Cash and cash equivalents |  |  | 48,443 | 172,471 | 89,189 |  | $ 44,631
Net current assets (liabilities) |  |  | (201,100) | 124,100 |  |  |
Net assets (liabilities) |  |  | $ (201,069) | (75,810) |  |  |
Percentage of workforce reduction |  |  | 80.00% |  |  |  |
Percentage of Board of Directors reduction |  |  | 50.00% |  |  |  |
Equity |  |  | $ (201,069) | (75,810) | (5,853) |  | 47,977
Issued capital |  |  | 497,488 | 466,085 | 320,884 |  |
Ordinary shares [member] |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Equity |  |  | 497,488 | $ 466,085 | $ 320,884 |  | $ 235,277
Phase Two | Bottom of Range |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Estimated Operating Expenses |  |  | 5,000 |  |  |  |
Phase Two | Top of Range |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Estimated Operating Expenses |  |  | $ 8,000 |  |  |  |
Events after Reporting Period |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  | $ 19,300 |
Events after Reporting Period | First Phase |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Estimated Operating Expenses |  | $ 10,000 |  |  |  |  |
Development Funding Agreement | Change of Control |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Percentage of repayment due to termination |  |  | 0.00% |  |  |  |
Repayment due to termination |  |  | $ 0 |  |  |  |
Development Funding Agreement | Disagreement with DFA Investors |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Percentage of repayment due to termination |  |  | 135.00% |  |  |  |
Repayment due to termination |  |  | $ 229,500 |  |  |  |
Development Funding Agreement | Inability to Fund Development Costs |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Percentage of repayment due to termination |  |  | 150.00% |  |  |  |
Repayment due to termination |  |  | $ 255,000 |  |  |  |
Development Funding Agreement | Safety |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Percentage of repayment due to termination |  |  | 275.00% |  |  |  |
Repayment due to termination |  |  | $ 467,500 |  |  |  |
Development Funding Agreement | Bankruptcy and Other Material Breaches |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Percentage of repayment due to termination |  |  | 400.00% |  |  |  |
Repayment due to termination |  |  | $ 680,000 |  |  |  |
Development Funding Agreement | Events after Reporting Period |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Number of ordinary shares issued | 136,661,003 |  |  |  |  |  |
Cash payment to DFA | $ 20,000 |  |  |  |  |  |
Percentage of share capital issued | 9.99% |  |  |  |  |  |
Development Funding Agreement | Events after Reporting Period | Ordinary shares [member] |  |  |  |  |  |  |
Disclosure Of Reclassifications Or Changes In Presentation [Line Items] |  |  |  |  |  |  |
Number of ordinary shares issued | 136,661,003 |  |  |  |  |  |

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