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Litigations - Contingencies assets (Details) R$ in Millions, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2019 BRL (R$) | Nov. 30, 2019 USD ($) | Dec. 31, 2020 CAD ($) USD ($) | Dec. 31, 2020 BRL (R$) USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CAD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2010
Contingent assets |  |  |  |  |  |  |  |
Contingent asset recognized |  |  |  | R$ 343 | $ 66,000,000 |  |  |
VBG |  |  |  |  |  |  |  |
Contingent assets |  |  |  |  |  |  |  |
Ownership interest in subsidiary (as a percent) |  |  |  |  |  |  |  | 51.00%
BSG Resource Limited |  |  |  |  |  |  |  |
Contingent assets |  |  |  |  |  |  |  |
Judicial decision amount, including interest |  |  |  |  | $ 2,000,000,000 |  |  |
Compulsory loan |  |  |  |  |  |  |  |
Contingent assets |  |  |  |  |  |  |  |
Amount requested for payment |  | $ 55,000,000 |  |  |  |  |  |
Damages sought | R$ | R$ 301 |  |  |  |  |  |  |
ICMS included in PIS and COFINS tax base |  |  |  |  |  |  |  |
Contingent assets |  |  |  |  |  |  |  |
Number of judicial proceedings |  |  | 2 | 2 | 2 |  |  |
Number of proceedings with definitive favorable decision |  |  | 1 | 1 | 1 |  |  |
Contingent asset recognized |  |  |  | R$ 313 | $ 60,000,000 |  |  |
Amount received |  |  |  | R$ 72 | 14,000,000 |  |  |
Canadian litigation matter |  |  |  |  |  |  |  |
Contingent assets |  |  |  |  |  |  |  |
Tax refund recognized |  |  |  |  |  | $ 221 | $ 162,000,000 |
Contingent asset related to an income tax refund, included estimated interest |  |  | $ 21 |  | 15,000,000 |  |  |
Amount sought with costs and interest |  |  | $ 21 |  | $ 15,000,000 |  |  |

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- Definition The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2020-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_17_b_iii&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2020-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_16_b_iii&doctype=Standard -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph 19B -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_19B_c&doctype=Standard -URIDate 2020-01-01 + Details
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