Equity - Schedule of employee share compensation (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Disclosure of fair value measurement of equity [line items] | |||
| Annual fair value charge of equity settled plans | $ 44 | $ 59 | $ 43 |
| Equity-settled plans | |||
| Disclosure of fair value measurement of equity [line items] | |||
| Annual fair value charge of equity settled plans | 44 | 59 | 43 |
| Executive share award plans | |||
| Disclosure of fair value measurement of equity [line items] | |||
| Annual fair value charge of equity settled plans | 44 | 48 | 34 |
| Executive share option plans | |||
| Disclosure of fair value measurement of equity [line items] | |||
| Annual fair value charge of equity settled plans | 2 | 9 | 7 |
| Savings plans | |||
| Disclosure of fair value measurement of equity [line items] | |||
| Annual fair value charge of equity settled plans | $ (2) | $ 2 | $ 2 |