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Events After the End of the Reporting Period - Additional information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Events After the End of the Reporting Period [Line Items] |  |  |  |
Depreciation expense |  | $ 140 | $ 108 | $ 94
Subsequent Period [Member] |  |  |  |
Events After the End of the Reporting Period [Line Items] |  |  |  |
Depreciation expense | $ 600 |  |  |

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- Definition The amount of depreciation expense. Depreciation is the systematic allocation of depreciable amounts of tangible assets over their useful lives. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_DepreciationExpense
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Events After the End of the Reporting Period + References No definition available. + Details
Name: | wds_EventsAfterTheEndOfTheReportingPeriodLineItems
Namespace Prefix: | wds_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=wds_SubsequentPeriodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |