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Contingent Liabilities and Assets - Additional Information (Detail) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Contingent Liabilities And Assets [Abstract] |  |
Contingent assets | $ 199 | $ 0

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- Definition The amount of the estimated financial effect of possible assets that arise from past events and whose existence will be confirmed only by the occurrence or non-occurrence of one or more uncertain future events not wholly within control of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2022-03-24 -Paragraph 89 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2022-en-r&anchor=para_89&doctype=Standard -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Contingent liabilities and assets. + References No definition available. + Details
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Namespace Prefix: | wds_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration