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Information by business segment and by geographic area - Net operating revenue by shipment destination (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | $ 43,839 |  | $ 54,502 | $ 39,545
Iron Solutions [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 34,916 | [1] | 45,925 | 31,916
Energy Transition Materials [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 8,398 |  | 7,966 | 6,827
All other segments [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue | [2] | 525 |  | 611 | 802
Americas Except United States And Brazil [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 1,199 |  | 1,283 | 760
Americas Except United States And Brazil [Member] | Iron Solutions [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 477 | [1] | 759 | 271
Americas Except United States And Brazil [Member] | Energy Transition Materials [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 597 |  | 402 | 83
Americas Except United States And Brazil [Member] | All other segments [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue | [2] | 125 |  | 122 | 406
United States Of America [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 1,643 |  | 1,543 | 1,041
United States Of America [Member] | Iron Solutions [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 218 | [1] | 392 | 244
United States Of America [Member] | Energy Transition Materials [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 1,425 |  | 1,151 | 797
Germany [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 1,521 |  | 2,034 | 1,526
Germany [Member] | Iron Solutions [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 373 | [1] | 618 | 326
Germany [Member] | Energy Transition Materials [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 1,148 |  | 1,416 | 1,169
Germany [Member] | All other segments [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue | [2] |  |  |  | 31
Europe Except Germany [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 3,836 |  | 4,696 | 3,570
Europe Except Germany [Member] | Iron Solutions [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 1,713 | [1] | 2,373 | 1,202
Europe Except Germany [Member] | Energy Transition Materials [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 2,123 |  | 2,323 | 2,356
Europe Except Germany [Member] | All other segments [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue | [2] |  |  |  | 12
Middle East Africa And Oceania [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 2,646 |  | 2,155 | 1,435
Middle East Africa And Oceania [Member] | Iron Solutions [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 2,594 | [1] | 2,140 | 1,418
Middle East Africa And Oceania [Member] | Energy Transition Materials [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 27 |  | 15 | 17
Middle East Africa And Oceania [Member] | All other segments [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue | [2] | 25 |  |  |
Japan [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 3,535 |  | 4,523 | 2,193
Japan [Member] | Iron Solutions [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 2,765 | [1] | 3,977 | 1,793
Japan [Member] | Energy Transition Materials [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 770 |  | 546 | 400
China [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 22,203 |  | 28,603 | 23,124
China [Member] | Iron Solutions [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 20,593 | [1] | 27,510 | 22,169
China [Member] | Energy Transition Materials [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 1,610 |  | 1,093 | 922
China [Member] | All other segments [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue | [2] |  |  |  | 33
Asia Except Japan And China [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 3,119 |  | 4,501 | 2,999
Asia Except Japan And China [Member] | Iron Solutions [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 2,434 | [1] | 3,536 | 2,068
Asia Except Japan And China [Member] | Energy Transition Materials [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 638 |  | 965 | 931
Asia Except Japan And China [Member] | All other segments [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue | [2] | 47 |  |  |
Brazil [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 4,137 |  | 5,164 | 2,897
Brazil [Member] | Iron Solutions [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 3,749 | [1] | 4,620 | 2,425
Brazil [Member] | Energy Transition Materials [Member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue |  | 60 |  | 55 | 152
Brazil [Member] | All other segments [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
Net operating revenue | [2] | $ 328 |  | $ 489 | $ 320
[1] | In 2022, the revenue from Iron Solutions decreased from prior year, among other factors, due to the decline of 23.5% in the average realized price of iron ore, following the decrease in the international price of this product.
[2] | Includes the reclassification of the revenues of Midwestern System in the amount of US$231, for the year ended December 31, 2022 (2021: US$377 and 2020: US$162).

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