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Segmental information - Summary of performance of operating segments (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Disclosure of operating segments [line items] |  |
Consolidated sales revenue | $ 33,083 | $ 19,362
Underlying EBITDA | 21,037 | 9,640
Underlying earnings | 12,166 | 4,750
Profit/(loss) after tax – attributable to owners of Rio Tinto | 12,313 | 3,316
Capital expenditure | 3,310 | 2,665
Proceeds from disposal of property, plant and equipment | 26 | 28
Capital expenditure | 3,336 | 2,693
Depreciation and amortisation expense | 2,307 | 2,092
Other operations |  |
Disclosure of operating segments [line items] |  |
Consolidated sales revenue | 85 | 158
Underlying EBITDA | (4) | 1
Underlying earnings | (51) | (29)
Capital expenditure | 0 | 1
Depreciation and amortisation expense | 92 | 99
Product group |  |
Disclosure of operating segments [line items] |  |
Consolidated sales revenue | 34,628 | 20,333
Underlying EBITDA | 21,420 | 10,004
Underlying earnings | 12,466 | 5,022
Profit/(loss) after tax – attributable to owners of Rio Tinto | 12,466 | 5,022
Capital expenditure | 3,395 | 2,802
Depreciation and amortisation expense | 2,514 | 2,367
Other items |  |
Disclosure of operating segments [line items] |  |
Capital expenditure | 35 | 22
Depreciation and amortisation expense | 42 | 39
Share of equity accounted units |  |
Disclosure of operating segments [line items] |  |
Share of equity accounted units | (1,545) | (971)
Capital expenditure | (120) | (159)
Depreciation and amortisation expense | (249) | (314)
Depreciation and amortisation of equity accounted units |  |
Disclosure of operating segments [line items] |  |
Depreciation and amortisation expense | (249) | (314)
Central pensions, share-based payments, insurance and derivatives |  |
Disclosure of operating segments [line items] |  |
Underlying EBITDA | 119 | 102
Profit/(loss) after tax – attributable to owners of Rio Tinto | 120 | 97
Restructuring, project and one-off costs |  |
Disclosure of operating segments [line items] |  |
Underlying EBITDA | (36) | (72)
Profit/(loss) after tax – attributable to owners of Rio Tinto | (23) | (53)
Central costs |  |
Disclosure of operating segments [line items] |  |
Underlying EBITDA | (346) | (273)
Profit/(loss) after tax – attributable to owners of Rio Tinto | (294) | (233)
Central exploration and evaluation |  |
Disclosure of operating segments [line items] |  |
Underlying EBITDA | (120) | (121)
Profit/(loss) after tax – attributable to owners of Rio Tinto | (100) | (97)
Net interest |  |
Disclosure of operating segments [line items] |  |
Profit/(loss) after tax – attributable to owners of Rio Tinto | (3) | 14
Underlying earnings |  |
Disclosure of operating segments [line items] |  |
Profit/(loss) after tax – attributable to owners of Rio Tinto | 12,166 | 4,750
Operating segments |  |
Disclosure of operating segments [line items] |  |
Capital expenditure | 3,395 | 2,802
Depreciation and amortisation expense | 2,514 | 2,367
Operating segments | Reportable segments |  |
Disclosure of operating segments [line items] |  |
Consolidated sales revenue | 34,688 | 20,257
Underlying EBITDA | 21,430 | 10,021
Underlying earnings | 12,520 | 5,057
Capital expenditure | 3,395 | 2,801
Depreciation and amortisation expense | 2,422 | 2,268
Operating segments | Iron Ore |  |
Disclosure of operating segments [line items] |  |
Consolidated sales revenue | 21,707 | 11,465
Underlying EBITDA | 16,060 | 7,698
Underlying earnings | 10,216 | 4,563
Profit/(loss) after tax – attributable to owners of Rio Tinto | 10,216 | 4,563
Capital expenditure | 1,912 | 1,185
Depreciation and amortisation expense | 1,022 | 840
Operating segments | Aluminium |  |
Disclosure of operating segments [line items] |  |
Consolidated sales revenue | 5,932 | 4,487
Underlying EBITDA | 1,924 | 925
Underlying earnings | 921 | 193
Profit/(loss) after tax – attributable to owners of Rio Tinto | 921 | 193
Capital expenditure | 524 | 482
Depreciation and amortisation expense | 645 | 594
Operating segments | Copper |  |
Disclosure of operating segments [line items] |  |
Consolidated sales revenue | 3,779 | 1,983
Underlying EBITDA | 2,048 | 686
Underlying earnings | 885 | 111
Profit/(loss) after tax – attributable to owners of Rio Tinto | 885 | 111
Capital expenditure | 750 | 987
Depreciation and amortisation expense | 523 | 568
Operating segments | Minerals |  |
Disclosure of operating segments [line items] |  |
Consolidated sales revenue | 3,270 | 2,322
Underlying EBITDA | 1,398 | 712
Underlying earnings | 498 | 190
Profit/(loss) after tax – attributable to owners of Rio Tinto | 498 | 190
Capital expenditure | 209 | 147
Depreciation and amortisation expense | 232 | 266
Operating segments | Other operations |  |
Disclosure of operating segments [line items] |  |
Consolidated sales revenue | 85 | 158
Profit/(loss) after tax – attributable to owners of Rio Tinto | (51) | (29)
Capital expenditure | 0 | 1
Depreciation and amortisation expense | 92 | 99
Inter-segment transactions |  |
Disclosure of operating segments [line items] |  |
Consolidated sales revenue | (145) | (82)
Underlying EBITDA | (6) | (18)
Underlying earnings | (3) | (6)
Profit/(loss) after tax – attributable to owners of Rio Tinto | $ (3) | $ (6)

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