Property, Plant and Equipment - Summary of Property, Plant and Equipment (Parenthetical) (Detail) - USD ($) $ in Millions |
Jun. 30, 2021 |
Nov. 06, 2020 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|---|---|---|---|---|
| Disclosure of detailed information about property, plant and equipment [line items] | ||||
| Acquisition Of additional proportion Of ownership interest In joint operation | 28.00% | |||
| Right-of-use assets | $ 3,350 | $ 3,047 | $ 492 | |
| Shenzi [member] | ||||
| Disclosure of detailed information about property, plant and equipment [line items] | ||||
| Acquisition Of additional proportion Of ownership interest In joint operation | 28.00% |