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Segmental information - additional information - Consolidated sales revenue by product (Details) - USD ($) $ in Millions | 6 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021
Disclosure of products and services [line items] |  |
Revenue from contracts with customers | $ 29,419 | $ 31,803
Other Revenue | 356 | 1,280
Consolidated sales revenue | 29,775 | 33,083
Iron Ore |  |
Disclosure of products and services [line items] |  |
Revenue from contracts with customers | 17,547 | 21,964
Other Revenue | 91 | 1,108
Consolidated sales revenue | 17,638 | 23,072
Aluminium, alumina and bauxite |  |
Disclosure of products and services [line items] |  |
Revenue from contracts with customers | 7,321 | 5,733
Other Revenue | 298 | 84
Consolidated sales revenue | 7,619 | 5,817
Copper |  |
Disclosure of products and services [line items] |  |
Revenue from contracts with customers | 1,702 | 1,472
Other Revenue | (38) | 77
Consolidated sales revenue | 1,664 | 1,549
Industrial minerals (comprising titanium dioxide slag, borates and salt) |  |
Disclosure of products and services [line items] |  |
Revenue from contracts with customers | 1,233 | 1,141
Other Revenue | (3) | 4
Consolidated sales revenue | 1,230 | 1,145
Gold |  |
Disclosure of products and services [line items] |  |
Revenue from contracts with customers | 322 | 506
Other Revenue | 9 | (6)
Consolidated sales revenue | 331 | 500
Diamonds |  |
Disclosure of products and services [line items] |  |
Revenue from contracts with customers | 465 | 160
Other Revenue | 0 | 0
Consolidated sales revenue | 465 | 160
Other products |  |
Disclosure of products and services [line items] |  |
Revenue from contracts with customers | 829 | 827
Other Revenue | (1) | 13
Consolidated sales revenue | $ 828 | $ 840

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