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Litigations - Changes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Changes in provision |  |  |  |  |
Balance at beginning of the period |  |  | $ 3,989 |  |
Balance at end of the period | $ 4,021 |  | 4,021 |  | $ 3,989
Provisions, current liabilities | 1,156 |  | 1,156 |  | 1,826
Provisions, non-current liabilities | 8,003 |  | 8,003 |  | 8,434
Legal proceedings reserved |  |  | 442 |  | 423
Legal proceedings guaranteed |  |  | 509 |  | 487
Provisions for litigation |  |  |  |  |
Changes in provision |  |  |  |  |
Balance at beginning of the period |  |  | 1,091 | $ 1,462 | 1,462
Additions and reversals, net | 28 | $ 44 | 44 | 63 |
Payments |  |  | (48) | (55) |
Indexation and interest |  |  | 36 | 42 |
Translation adjustment |  |  | 47 | (368) |
Acquisition of NLC (note 12) |  |  | 6 |  |
Balance at end of the period | 1,176 | 1,144 | 1,176 | 1,144 | 1,091
Provisions, current liabilities | 102 | 84 | 102 | 84 | 87
Provisions, non-current liabilities | 1,074 | 1,060 | 1,074 | 1,060 | 1,004
Provisions | 1,176 | 1,144 | 1,176 | 1,144 |
Tax litigation |  |  |  |  |
Changes in provision |  |  |  |  |
Balance at beginning of the period |  |  | 485 | 696 | 696
Additions and reversals, net |  |  |  | 19 |
Additions and reversals, net |  |  | (2) |  |
Payments |  |  |  | (10) |
Indexation and interest |  |  | 3 | 13 |
Translation adjustment |  |  | 19 | (168) |
Balance at end of the period | 505 | 550 | 505 | 550 | 485
Provisions, current liabilities | 9 | 7 | 9 | 7 |
Provisions, non-current liabilities | 496 | 543 | 496 | 543 |
Provisions | 505 | 550 | 505 | 550 |
Civil litigation |  |  |  |  |
Changes in provision |  |  |  |  |
Balance at beginning of the period |  |  | 260 | 300 | 300
Additions and reversals, net |  |  |  | 28 |
Additions and reversals, net |  |  | (1) |  |
Payments |  |  | (15) | (11) |
Indexation and interest |  |  | 10 | 16 |
Translation adjustment |  |  | 11 | (77) |
Acquisition of NLC (note 12) |  |  | 1 |  |
Balance at end of the period | 266 | 256 | 266 | 256 | 260
Provisions, current liabilities | 17 | 14 | 17 | 14 |
Provisions, non-current liabilities | 249 | 242 | 249 | 242 |
Provisions | 266 | 256 | 266 | 256 |
Labor litigation |  |  |  |  |
Changes in provision |  |  |  |  |
Balance at beginning of the period |  |  | 335 | 455 | 455
Additions and reversals, net |  |  | 46 | 14 |
Payments |  |  | (29) | (34) |
Indexation and interest |  |  | 23 | 13 |
Translation adjustment |  |  | 17 | (120) |
Acquisition of NLC (note 12) |  |  | 5 |  |
Balance at end of the period | 397 | 328 | 397 | 328 | 335
Provisions, current liabilities | 76 | 63 | 76 | 63 |
Provisions, non-current liabilities | 321 | 265 | 321 | 265 |
Provisions | 397 | 328 | 397 | 328 |
Environmental litigation |  |  |  |  |
Changes in provision |  |  |  |  |
Balance at beginning of the period |  |  | 11 | 11 | 11
Additions and reversals, net |  |  | 1 | 2 |
Payments |  |  | (4) |  |
Translation adjustment |  |  |  | (3) |
Balance at end of the period | 8 | 10 | 8 | 10 | $ 11
Provisions, non-current liabilities | 8 | 10 | 8 | 10 |
Provisions | $ 8 | $ 10 | $ 8 | $ 10 |

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- Definition The increase in other provisions resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of additional other provisions made. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of current provisions. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_l&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in other provisions resulting from a change in discount rate. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_e&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84&doctype=Standard -URIDate 2020-01-01 + Details
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