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Impairment charges - (Tables) | 6 Months Ended
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Jun. 30, 2023
Disclosure of impairment loss and reversal of impairment loss [abstract] |
Summary of impairment charges |
Six months ended 30 June |  | 2023 US$m |  |  |  | 2022 US$m
Aluminium – Alumina refineries |  | (1,175) |  |  |  |  | — |
Allocated as: |  |  |  |  |  |
Property, plant and equipment |  | (1,175) |  |  |  |  | — |

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- Definition The disclosure of an impairment loss recognised or reversed for a cash-generating unit. [Refer: Impairment loss; Reversal of impairment loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 130 -Subparagraph d -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_130_d_ii&doctype=Standard -URIDate 2023-03-23 + Details
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