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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
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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% |  |  |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_53_j&doctype=Standard -URIDate 2020-01-01 + Details
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- Details
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