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Provisions - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Later than ten years [member] |  |
Disclosure Of Detailed Information About Provisions [Line Items] |  |
Percentage of proportion of noncurrent provision yet to be settled | 54.00% | 65.00%
Provision for decommissioning, restoration and rehabilitation costs [member] | Discount rate, measurement input [member] |  |
Disclosure Of Detailed Information About Provisions [Line Items] |  |
Percentage of pretax discount rates | 0.50% |
Increase (decrease) in fair value measurement due to reasonably possible decrease in unobservable input, liabilities | $ 316 |
Percentage of reasonably possible increase in unobservable input, liabilities | 10.00% |
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, liabilities | $ 627 |
Onerous contracts provision [member] |  |
Disclosure Of Detailed Information About Provisions [Line Items] |  |
Unused provision reversed, other provisions | $ 0 | $ 214
Contract term | 18 years |
US government bond rate | 4.10% | 1.855%
Bottom of range [member] | Provision for decommissioning, restoration and rehabilitation costs [member] | Discount rate, measurement input [member] |  |
Disclosure Of Detailed Information About Provisions [Line Items] |  |
Significant unobservable input, liabilities | 0.034 | 0.004
Top of range [member] | Provision for decommissioning, restoration and rehabilitation costs [member] | Discount rate, measurement input [member] |  |
Disclosure Of Detailed Information About Provisions [Line Items] |  |
Significant unobservable input, liabilities | 0.047 | 0.024

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- Definition The amount of increase (decrease) in the fair value measurement of liabilities due to a reasonably possible decrease in an unobservable input. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2022-03-24 -Paragraph 93 -Subparagraph h -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2022-en-r&anchor=para_93_h_ii&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of increase (decrease) in the fair value measurement of liabilities due to a reasonably possible increase in an unobservable input. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2022-03-24 -Paragraph 93 -Subparagraph h -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2022-en-r&anchor=para_93_h_ii&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The percentage of a reasonably possible increase in an unobservable input used in fair value measurement of liabilities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 13 -IssueDate 2022-03-24 -Paragraph 93 -Subparagraph h -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2022-en-r&anchor=para_93_h_ii&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The value of significant unobservable input used in the measurement of the fair value of liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2022-03-24 -Paragraph 93 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2022-en-r&anchor=para_93_d&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount reversed for unused 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 d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2022-en-r&anchor=para_84_d&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition Percentage of pretax discount rates. + References No definition available. + Details
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- Definition Percentage of proportion of non current provision yet to be settled. + References No definition available. + Details
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- Definition US government bond rate. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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