Non-financial assets and liabilities - Additional information, provisions (Details) - Employee benefits - USD ($) $ in Millions |
Jun. 30, 2026 |
Jun. 30, 2025 |
|---|---|---|
| Disclosure Of Other Provisions [Line Items] | ||
| Current provisions for accrued annual leave | $ 1.8 | $ 1.6 |
| Current provisions for short term incentives | $ 4.7 | $ 4.0 |