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Group income statement - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Consolidated operations |  |  |
Consolidated sales revenue |  | $ 33,083 | $ 19,362
Net operating costs (excluding items shown separately) |  | (15,322) | (12,217)
Impairment charges | [1] | 0 | (1,015)
Exploration and evaluation costs |  | (324) | (280)
Operating profit |  | 17,437 | 5,850
Share of profit after tax of equity accounted units |  | 556 | 198
Impairment of investments in equity accounted units | [1] | 0 | (119)
Profit before finance items and taxation |  | 17,993 | 5,929
Finance items |  |  |
Net exchange gains/(losses) on net external and intragroup debt balances |  | 375 | (165)
Net losses on derivatives not qualifying for hedge accounting |  | (63) | (206)
Finance income |  | 42 | 104
Finance costs | [2] | (91) | (169)
Amortisation of discount on provisions |  | (207) | (214)
Net finance income (expense) |  | 56 | (650)
Profit before taxation |  | 18,049 | 5,279
Taxation |  | (4,981) | (1,828)
Profit after tax for the period |  | 13,068 | 3,451
– attributable to Rio Tinto |  | 12,313 | 3,316
– attributable to non-controlling interests |  | $ 755 | $ 135
Basic earnings per share (in USD per share) | [3] | $ 7.610 | $ 2.050
Diluted earnings per share (in USD per share) | [3] | $ 7.561 | $ 2.036
[1] | Refer to Impairment charges note on pages F-13 and F-14.
[2] | Finance costs in the income statement include hedging adjustments and are net of amounts capitalised of US$174 million (30 June 2020: US$175 million).
[3] | For the purpose of calculating basic earnings per share, the weighted average number of Rio Tinto plc and Rio Tinto Limited shares outstanding during the period was 1,618.1 million (30 June 2020: 1,617.3 million), being the weighted average number of Rio Tinto plc shares outstanding of 1,246.9 million (30 June 2020: 1,246.5 million), plus the weighted average number of Rio Tinto Limited shares outstanding of 371.2 million (30 June 2020: 370.8 million). The profit figures used in the calculation of basic and diluted earnings per share are the profits attributable to owners of Rio Tinto. For the purpose of calculating diluted earnings per share, the effect of dilutive securities is added to the weighted average number of shares. This effect is calculated under the treasury stock method.

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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Finance items [abstract] + References No definition available. + Details
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Namespace Prefix: | rio_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Impairment Loss Of Equity Accounted Unit Recognised In Profit Or Loss, After Tax + References No definition available. + Details
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Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of net operating expenses not separately disclosed on the income statement. + References No definition available. + Details
Name: | rio_NetOperatingExpenses
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of profit (loss) from operating activities before finance items and tax expense/income of the entity. + References No definition available. + Details
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Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration