Dividends - Summary of Dividends Paid (Detail) - USD ($) $ / shares in Units, $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2023 |
|
| Disclosure of Dividends [abstract] | |||
| Prior year final dividend, Per share | $ 0.74 | $ 0.80 | $ 1.75 |
| Interim dividend, Per share | 0.50 | 0.72 | 0.90 |
| Dividends paid during the period, Per share | $ 1.24 | $ 1.52 | $ 2.65 |
| Prior year final dividend, Total | $ 3,749 | $ 4,065 | $ 8,858 |
| Interim dividend, Total | 2,537 | 3,647 | 4,562 |
| Dividends paid during the period, Total | $ 6,286 | $ 7,712 | $ 13,420 |