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Close-down, restoration and environmental provisions - Undiscounted close-down and environmental restoration obligation (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of other provisions [Line Items] |  |
Undiscounted close-down, restoration and environmental obligations | $ 23,038 | $ 23,372
Impact of discounting | (7,307) | (6,222)
Total closure obligation | 15,731 | 17,150
Due within 1 year |  |
Disclosure of other provisions [Line Items] |  |
Undiscounted close-down, restoration and environmental obligations | 1,183 | 1,523
Between 1 and 3 years |  |
Disclosure of other provisions [Line Items] |  |
Undiscounted close-down, restoration and environmental obligations | 2,497 | 2,365
Between 3 and 5 years |  |
Disclosure of other provisions [Line Items] |  |
Undiscounted close-down, restoration and environmental obligations | 1,880 | 2,005
Later than five years |  |
Disclosure of other provisions [Line Items] |  |
Undiscounted close-down, restoration and environmental obligations | 17,478 | 17,479
Australia |  |
Disclosure of other provisions [Line Items] |  |
Total closure obligation | 8,546 | 9,187
US |  |
Disclosure of other provisions [Line Items] |  |
Total closure obligation | 4,419 | 4,682
Canada |  |
Disclosure of other provisions [Line Items] |  |
Total closure obligation | 1,517 | 1,722
Other countries |  |
Disclosure of other provisions [Line Items] |  |
Total closure obligation | 1,249 | 1,559
Decommissioning, decontamination and demolition |  |
Disclosure of other provisions [Line Items] |  |
Total closure obligation | 3,065 | 3,591
Closure and rehabilitation earthworks |  |
Disclosure of other provisions [Line Items] |  |
Total closure obligation | 4,628 | 4,609
Long-term water management costs |  |
Disclosure of other provisions [Line Items] |  |
Total closure obligation | 1,316 | 1,236
Post-closure monitoring and maintenance |  |
Disclosure of other provisions [Line Items] |  |
Total closure obligation | 1,581 | 1,806
Indirect costs, owners' costs and contingency |  |
Disclosure of other provisions [Line Items] |  |
Total closure obligation | 5,141 | 5,908
Operating sites |  |
Disclosure of other provisions [Line Items] |  |
Total closure obligation | 11,715 | 12,021
Non-operating sites |  |
Disclosure of other provisions [Line Items] |  |
Total closure obligation | $ 4,016 | $ 5,129

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- Definition The amount of provision for costs related to decommissioning, restoration and rehabilitation. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2024-01-01 -Section D Examples: disclosures -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_D_TI -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2024-01-01 -Paragraph 87 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_87&doctype=Standard -URIDate 2024-03-27 + Details
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