Other investments - Movements in other investments (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Disclosure of financial assets [line items] | ||
| Beginning balance | $ 39 | $ 94 |
| Exchange differences | 3 | |
| Additions | 47 | 17 |
| Repayments and disposals | (4) | (6) |
| Capitalised interest | 5 | |
| Impairment charged during the year | (40) | (72) |
| Provision movement | 1 | |
| Transfer to associates/fair value adjustment | (21) | (3) |
| Ending balance | 21 | 39 |
| Loans | ||
| Disclosure of financial assets [line items] | ||
| Beginning balance | 11 | 63 |
| Exchange differences | 1 | |
| Additions | 47 | 11 |
| Repayments and disposals | (4) | (6) |
| Capitalised interest | 5 | |
| Impairment charged during the year | (40) | (63) |
| Provision movement | 1 | |
| Transfer to associates/fair value adjustment | 1 | (1) |
| Ending balance | 15 | 11 |
| Others | ||
| Disclosure of financial assets [line items] | ||
| Beginning balance | 28 | 31 |
| Exchange differences | 2 | |
| Additions | 6 | |
| Impairment charged during the year | (9) | |
| Provision movement | 0 | |
| Transfer to associates/fair value adjustment | (22) | (2) |
| Ending balance | $ 6 | $ 28 |