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Investments in subsidiaries, associates and joint ventures - Guarantees provided (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Investments in associates and joint ventures |  |  |  |
Ownership interest in associate (as a percent) | 29.60% |  |  |
Investments in associates and joint ventures | $ 2,031 | $ 2,031 | $ 2,798 | $ 3,225
Equity results in income statement |  | (119) | 228 | 305
Dividends received |  | 173 | 353 | 245
VLI S.A. |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in associate (as a percent) | 29.60% |  |  |
Ferrous minerals |  |  |  |
Investments in associates and joint ventures |  |  |  |
Investments in associates and joint ventures | $ 1,154 | 1,154 | 1,729 |
Equity results in income statement |  | 50 | 254 | 417
Dividends received |  | $ 140 | 296 | 189
Ferrous minerals | VLI S.A. |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in associate (as a percent) |  | 29.60% |  |
% Voting capital |  | 29.60% |  |
Investments in associates and joint ventures | 480 | $ 480 | 812 |
Equity results in income statement |  | (22) | 1 | 30
Dividends received |  | $ 2 | 9 | 7
Ferrous minerals | Zhuhai YPM Pellet Co |  |  |  |
Investments in associates and joint ventures |  |  |  |
Investments in associates and joint ventures |  |  | 23 |
Ferrous minerals | Baovale Mineracao S.A |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in joint venture (as a percent) |  | 50.00% |  |
% Voting capital |  | 50.00% |  |
Investments in associates and joint ventures | 20 | $ 20 | 25 |
Equity results in income statement |  | $ 1 | 4 | 5
Dividends received |  |  |  | 1
Ferrous minerals | Companhia Coreano-Brasileira de Pelotizacao |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in joint venture (as a percent) |  | 50.00% |  |
% Voting capital |  | 50.00% |  |
Investments in associates and joint ventures | 48 | $ 48 | 88 |
Equity results in income statement |  | 8 | 48 | 69
Dividends received |  | $ 34 | 62 | 32
Ferrous minerals | Companhia Hispano-Brasileira de Pelotizacao |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in joint venture (as a percent) |  | 50.89% |  |
% Voting capital |  | 50.89% |  |
Investments in associates and joint ventures | 43 | $ 43 | 70 |
Equity results in income statement |  | 11 | 37 | 55
Dividends received |  | $ 27 | 50 | 23
Ferrous minerals | Companhia Italo-Brasileira de Pelotizacao |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in joint venture (as a percent) |  | 50.90% |  |
% Voting capital |  | 51.00% |  |
Investments in associates and joint ventures | 44 | $ 44 | 65 |
Equity results in income statement |  | 10 | 30 | 60
Dividends received |  | $ 23 | 54 | 32
Ferrous minerals | Companhia Nipo-Brasileira de Pelotizacao |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in joint venture (as a percent) |  | 51.00% |  |
% Voting capital |  | 51.11% |  |
Investments in associates and joint ventures | 121 | $ 121 | 150 |
Equity results in income statement |  | 8 | 84 | 126
Dividends received |  | $ 32 | 92 | 67
Ferrous minerals | MRS Logistica S.A. |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in associate (as a percent) |  | 48.16% |  |
% Voting capital |  | 46.75% |  |
Investments in associates and joint ventures | 398 | $ 398 | 496 |
Equity results in income statement |  | 34 | 50 | 72
Dividends received |  | $ 22 | 29 | 27
Ferrous minerals | Samarco Mineracao S.A. |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in joint venture (as a percent) |  | 50.00% |  |
% Voting capital |  | 50.00% |  |
Coal |  |  |  |
Investments in associates and joint ventures |  |  |  |
Equity results in income statement |  |  | (2) | 16
Coal | Henan Longyu |  |  |  |
Investments in associates and joint ventures |  |  |  |
Equity results in income statement |  |  | (2) | 16
Coal | Nacala Corridor Holding |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in joint venture (as a percent) |  | 50.00% |  |
% Voting capital |  | 50.00% |  |
Base metals |  |  |  |
Investments in associates and joint ventures |  |  |  |
Investments in associates and joint ventures | 18 | $ 18 | 14 |
Equity results in income statement |  |  |  | 1
Base metals | Korea Nickel Corp |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in associate (as a percent) |  | 25.00% |  |
% Voting capital |  | 25.00% |  |
Investments in associates and joint ventures | 18 | $ 18 | 14 |
Equity results in income statement |  |  |  | 1
Others |  |  |  |
Investments in associates and joint ventures |  |  |  |
Investments in associates and joint ventures | 859 | 859 | 1,055 |
Equity results in income statement |  | (169) | (24) | (129)
Dividends received |  | $ 33 | 57 | 56
Others | Mineracao Rio Grande do Norte S.A. |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in associate (as a percent) |  | 40.00% |  |
% Voting capital |  | 40.00% |  |
Investments in associates and joint ventures | 71 | $ 71 | 97 |
Equity results in income statement |  | (3) | 15 | 2
Dividends received |  | 9 |  |
Others | Others |  |  |  |
Investments in associates and joint ventures |  |  |  |
Investments in associates and joint ventures | 70 | 70 | 86 |
Equity results in income statement |  | $ (48) | (28) | (5)
Others | Alianca Geracao de Energia S.A. |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in joint venture (as a percent) |  | 55.00% |  |
% Voting capital |  | 55.00% |  |
Investments in associates and joint ventures | 367 | $ 367 | 470 |
Equity results in income statement |  | 28 | 31 | 25
Dividends received |  | $ 24 | 28 | 25
Others | Alianca Norte Energia Participacoes S.A. |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in joint venture (as a percent) |  | 51.00% |  |
% Voting capital |  | 51.00% |  |
Investments in associates and joint ventures | 117 | $ 117 | 160 |
Equity results in income statement |  | $ (8) | 4 | 15
Others | California Steel Industries, Inc |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in joint venture (as a percent) |  | 50.00% |  |
% Voting capital |  | 50.00% |  |
Investments in associates and joint ventures | $ 234 | $ 234 | 242 |
Equity results in income statement |  | $ (7) | 23 | 77
Dividends received |  |  | 29 | 31
Others | Companhia Siderurgica do Pecem |  |  |  |
Investments in associates and joint ventures |  |  |  |
Ownership interest in joint venture (as a percent) |  | 50.00% |  |
% Voting capital |  | 50.00% |  |
Equity results in income statement |  | $ (131) | $ (69) | $ (243)

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- Definition The amount of investments in subsidiaries, joint ventures and associates in an entity's separate financial statements. [Refer: Associates [member]; Joint ventures [member]; Subsidiaries [member]; Investments in subsidiaries] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2020-01-01 -Paragraph 10 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_10&doctype=Standard -URIDate 2020-01-01 + Details
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