Other Equity - Summary of Reserves (Detail) - USD ($) $ in Millions |
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|---|---|---|---|
| Other reserves [abstract] | |||
| Share premium account | $ 518 | $ 518 | $ 518 |
| Foreign currency translation reserve | 43 | 39 | 37 |
| Employee share awards reserve | 268 | 246 | 213 |
| Cash flow hedge reserve | 100 | 50 | 114 |
| Cost of hedging reserve | (54) | (23) | (74) |
| Equity investments reserve | 15 | 16 | 17 |
| Capital redemption reserve | 177 | 177 | 177 |
| Non-controlling interest contribution reserve | 1,283 | 1,283 | 1,283 |
| Total reserves | $ 2,350 | $ 2,306 | $ 2,285 |