Interests in Joint Operations - Summary of Assets Held in Joint Operations (Detail) - USD ($) $ in Millions |
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|---|---|---|---|
| Disclosure of significant joint operations [line items] | |||
| Current assets | $ 26,693 | $ 21,471 | |
| Non-current assets | 82,234 | 84,262 | |
| Total assets | 108,927 | 105,733 | $ 101,811 |
| Joint operations [member] | |||
| Disclosure of significant joint operations [line items] | |||
| Current assets | 2,260 | 2,059 | |
| Non-current assets | 38,725 | 37,193 | |
| Total assets | $ 40,985 | $ 39,252 |