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Impairment charges - (Tables) | 6 Months Ended
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Jun. 30, 2020
Disclosure of impairment loss and reversal of impairment loss [abstract] |
Summary of impairment charges |
| Six months ended 30 June 2020 |  |  |  | Six months ended 30 June 2019
| Pre-tax | Taxation | Non-controlling interest | Net amount | Pre-tax
| US$m | US$m | US$m | US$m | US$m
Aluminium – Pacific Aluminium | (489) | 17 | — | (472) | —
Aluminium – ISAL | (204) | (65) | — | (269) | (109)
Copper & Diamonds – Diavik | (441) | 149 | — | (292) | —
Copper & Diamonds – Oyu Tolgoi | — | — | — | — | (2,240)
Total impairment charge | (1,134) | 101 | — | (1,033) | (2,349)
Allocated as: |  |  |  |  |
Intangible assets | (4) |  |  |  | (1)
Property, plant and equipment | (1,011) |  |  |  | (2,348)
Investment in equity accounted units ('EAUs') | (119) |  |  |  | —
Total impairment charge | (1,134) |  |  |  | (2,349)
Comprising: |  |  |  |  |
Impairment charges of consolidated balances |  |  |  | (1,015) | (2,349)
Impairment charges related to EAUs (pre-tax) |  |  |  | (148) | —
Total impairment charges in the Rio Tinto financial information by business unit (page F- 28) |  |  |  | (1,163) | (2,349)
Taxation (including related to EAUs) |  |  |  | 130 | (16)
Non-controlling interests |  |  |  | — | 1,506
Total impairment in the income statement |  |  |  | (1,033) | (859)

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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 2019-01-01 -Paragraph 130 -Subparagraph d -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2019-en-r&anchor=para_130_d_ii&doctype=Standard -URIDate 2019-03-27 + Details
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