Working capital - Analysis of provisions for obsolescence of inventories (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Classes of inventory [Line Items] | |||
| Balance at beginning of the year | $ 180 | $ 124 | $ 128 |
| Exchange differences | (4) | (6) | (3) |
| Income statement charge(1) | 145 | 89 | 51 |
| Utilised | (27) | (27) | (47) |
| Sale of businesses | 0 | 0 | (5) |
| Ending balance | $ 294 | $ 180 | $ 124 |