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Non-financial assets and liabilities - Additional Information (Details) - USD ($) |  | 6 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 | Dec. 31, 2023 | Jun. 30, 2023
Employee benefits |  |  |
Disclosure Of Non Financial Assets And Liabilities [Line Items] |  |  |
Current provisions for accrued annual leave |  | $ 1,200,000 | $ 1,100,000
Bottom of Range | Discounted cash flow |  |  |
Disclosure Of Non Financial Assets And Liabilities [Line Items] |  |  |
Post tax discount rates |  | 13.80% |
Expected patent expiry |  | 9 years |
Top of Range | Discounted cash flow |  |  |
Disclosure Of Non Financial Assets And Liabilities [Line Items] |  |  |
Post tax discount rates |  | 15.50% |
Expected patent expiry |  | 25 years |
In-process research and development acquired |  |  |
Disclosure Of Non Financial Assets And Liabilities [Line Items] |  |  |
Impairment loss recognised in profit or loss | $ 0 |  |
Goodwill |  |  |
Disclosure Of Non Financial Assets And Liabilities [Line Items] |  |  |
Impairment loss recognised in profit or loss | $ 0 |  |

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