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Provisions including post-retirement benefits - Summary of provisions, including post-retirement benefits (Detail) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | $ 18,053 |  |
Adjustment on currency translation | (587) |  |
Adjustments to mining properties/right of use assets: |  |  |
increases to existing and new provisions | 345 |  |
Charged/(credited) to profit: |  |  |
-Increases to existing and new provisions | 525 |  |
– unused amounts reversed | (54) |  |
– exchange losses on provisions | 25 |  |
-amortisation of discount | 504 |  |
Utilised in the period | (429) |  |
Re-measurement gains recognised in other comprehensive income | (739) |  |
Transfers and other movements | (11) |  |
Provisions (including post-retirement benefits), ending balance | 17,632 |  | $ 18,053
Balance sheet analysis: |  |  |
Current | 2,308 |  | 2,106
Non-current | 15,324 |  | 15,930
Total | 17,632 |  | 18,053
Previously stated |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 18,036 |  |
Charged/(credited) to profit: |  |  |
Provisions (including post-retirement benefits), ending balance |  |  | 18,036
Balance sheet analysis: |  |  |
Total |  |  | 18,036
Increase (decrease) due to changes in accounting policy required by IFRSs |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 17 |  |
Charged/(credited) to profit: |  |  |
Provisions (including post-retirement benefits), ending balance |  |  | 17
Balance sheet analysis: |  |  |
Total |  |  | 17
Pensions and post-retirement healthcare |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 2,098 |  |
Adjustment on currency translation | (20) |  |
Adjustments to mining properties/right of use assets: |  |  |
increases to existing and new provisions | 0 |  |
Charged/(credited) to profit: |  |  |
-Increases to existing and new provisions | 62 |  |
– unused amounts reversed | 0 |  |
– exchange losses on provisions | 0 |  |
-amortisation of discount | 0 |  |
Utilised in the period | (66) |  |
Re-measurement gains recognised in other comprehensive income | (739) |  |
Transfers and other movements | 0 |  |
Provisions (including post-retirement benefits), ending balance | 1,335 |  | 2,098
Balance sheet analysis: |  |  |
Current | 68 |  |
Non-current | 1,267 |  |
Total | 1,335 |  | 2,098
Pensions and post-retirement healthcare | Previously stated |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 2,098 |  |
Charged/(credited) to profit: |  |  |
Provisions (including post-retirement benefits), ending balance |  |  | 2,098
Balance sheet analysis: |  |  |
Total |  |  | 2,098
Pensions and post-retirement healthcare | Increase (decrease) due to changes in accounting policy required by IFRSs |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 0 |  |
Charged/(credited) to profit: |  |  |
Provisions (including post-retirement benefits), ending balance |  |  | 0
Balance sheet analysis: |  |  |
Total |  |  | 0
Other employee entitlements |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 394 |  |
Adjustment on currency translation | (19) |  |
Adjustments to mining properties/right of use assets: |  |  |
increases to existing and new provisions | 0 |  |
Charged/(credited) to profit: |  |  |
-Increases to existing and new provisions | 57 |  |
– unused amounts reversed | (10) |  |
– exchange losses on provisions | 0 |  |
-amortisation of discount | 0 |  |
Utilised in the period | (56) |  |
Re-measurement gains recognised in other comprehensive income | 0 |  |
Transfers and other movements | 0 |  |
Provisions (including post-retirement benefits), ending balance | 366 |  | 394
Balance sheet analysis: |  |  |
Current | 293 |  |
Non-current | 73 |  |
Total | 366 |  | 394
Provision for long service leave | 275 |  | 272
Provisions for redundancy and severance payments | 31 |  | 60
Other employee entitlements | Previously stated |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 394 |  |
Charged/(credited) to profit: |  |  |
Provisions (including post-retirement benefits), ending balance |  |  | 394
Balance sheet analysis: |  |  |
Total |  |  | 394
Other employee entitlements | Increase (decrease) due to changes in accounting policy required by IFRSs |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 0 |  |
Charged/(credited) to profit: |  |  |
Provisions (including post-retirement benefits), ending balance |  |  | 0
Balance sheet analysis: |  |  |
Total |  |  | 0
Close down and restoration/ environmental |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 14,542 |  |
Adjustment on currency translation | (514) |  |
Adjustments to mining properties/right of use assets: |  |  |
increases to existing and new provisions | 345 |  |
Charged/(credited) to profit: |  |  |
-Increases to existing and new provisions | 206 |  |
– unused amounts reversed | (18) |  |
– exchange losses on provisions | 24 |  |
Utilised in the period | (256) |  |
Re-measurement gains recognised in other comprehensive income | 0 |  |
Transfers and other movements | 3 |  |
Provisions (including post-retirement benefits), ending balance | 14,835 |  | 14,542
Balance sheet analysis: |  |  |
Current | 1,145 |  |
Non-current | 13,690 |  |
Total | 14,835 |  | 14,542
Closure related receivables | 391 |  | 410
Close down and restoration/ environmental | Amortisation of discount |  |  |
Charged/(credited) to profit: |  |  |
-amortisation of discount | 503 | $ 207 |
Close down and restoration/ environmental | Adjustments to mining properties |  |  |
Charged/(credited) to profit: |  |  |
-amortisation of discount | 360 |  |
Close down and restoration/ environmental | Operating cost |  |  |
Charged/(credited) to profit: |  |  |
-amortisation of discount | 180 |  |
Close down and restoration/ environmental | Previously stated |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 14,542 |  |
Charged/(credited) to profit: |  |  |
Provisions (including post-retirement benefits), ending balance |  |  | 14,542
Balance sheet analysis: |  |  |
Total |  |  | 14,542
Close down and restoration/ environmental | Increase (decrease) due to changes in accounting policy required by IFRSs |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 0 |  |
Charged/(credited) to profit: |  |  |
Provisions (including post-retirement benefits), ending balance |  |  | 0
Balance sheet analysis: |  |  |
Total |  |  | 0
Other |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 1,019 |  |
Adjustment on currency translation | (34) |  |
Adjustments to mining properties/right of use assets: |  |  |
increases to existing and new provisions | 0 |  |
Charged/(credited) to profit: |  |  |
-Increases to existing and new provisions | 200 |  |
– unused amounts reversed | (26) |  |
– exchange losses on provisions | 1 |  |
-amortisation of discount | 1 |  |
Utilised in the period | (51) |  |
Re-measurement gains recognised in other comprehensive income | 0 |  |
Transfers and other movements | (14) |  |
Provisions (including post-retirement benefits), ending balance | 1,096 |  | 1,019
Balance sheet analysis: |  |  |
Current | 802 |  |
Non-current | 294 |  |
Total | 1,096 |  | 1,019
Other | Previously stated |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | 1,002 |  |
Charged/(credited) to profit: |  |  |
Provisions (including post-retirement benefits), ending balance |  |  | 1,002
Balance sheet analysis: |  |  |
Total |  |  | 1,002
Other | Increase (decrease) due to changes in accounting policy required by IFRSs |  |  |
Disclosure of other provisions [Line Items] |  |  |
Provisions (including post-retirement benefits), beginning balance | $ 17 |  |
Charged/(credited) to profit: |  |  |
Provisions (including post-retirement benefits), ending balance |  |  | 17
Balance sheet analysis: |  |  |
Total |  |  | $ 17

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- Definition The amount of current provisions, including provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_l&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of expense recognised due to the unwinding of the discount on provisions other than provisions from employee benefits, resulting from the effect of the passage of time. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2021-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_84&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The increase (decrease) in other provisions resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2021-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_84&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of non-current provisions, including provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_l&doctype=Standard -URIDate 2021-03-24 + Details
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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 2021-01-01 -Paragraph 84 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_84_c&doctype=Standard -URIDate 2021-03-24 + Details
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