Non-financial assets and liabilities - Additional Information, Provisions (Details) - Employee benefits - USD ($) $ in Millions |
Dec. 31, 2025 |
Jun. 30, 2025 |
|---|---|---|
| Disclosure Of Other Provisions [Line Items] | ||
| Current provisions for accrued annual leave | $ 1.6 | $ 1.6 |
| Current provisions for short term incentives | $ 1.9 | $ 4.0 |