Post employment benefits - Balance sheet analysis of post employment plans, narrative (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|---|---|---|---|
| DPS | |||
| Disclosure of defined benefit plans [line items] | |||
| Surplus/deficit in plan | $ 517 | $ 608 | $ 689 |
| GIGIPS | |||
| Disclosure of defined benefit plans [line items] | |||
| Surplus/deficit in plan | 366 | 417 | 332 |
| Other Schemes | |||
| Disclosure of defined benefit plans [line items] | |||
| Surplus/deficit in plan | $ 123 | $ 136 | $ 125 |