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Provisions - Summary Of Information About Provisions (Parenthetical) (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($)
Restoration [member] |
Disclosure of detailed information about provisions [line items] |
Increase (decrease) through change in discount rate, other provisions | $ 978
Increase decrease In accounting estimate other provisions | 262
Provision used, other provisions | 858
Onerous contracts [member] |
Disclosure of detailed information about provisions [line items] |
Increase (decrease) through change in discount rate, other provisions | 245
Provision used, other provisions | $ 29

X
- Definition The increase (decrease) in other provisions resulting from a change in discount rate. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2022-03-24 -Paragraph 84 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2022-en-r&anchor=para_84_e&doctype=Standard -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2022-03-24 -Paragraph 84 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2022-en-r&anchor=para_84_c&doctype=Standard -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Disclosure of detailed information about provisions. + References No definition available. + Details
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Namespace Prefix: | wds_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase decrease in accounting estimate other provisions. + References No definition available. + Details
Name: | wds_IncreaseDecreaseInAccountingEstimateOtherProvisions
Namespace Prefix: | wds_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |