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Costs and expenses by nature - Other (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Costs and expenses by nature |  |  |  |
Profit sharing program | $ 52 | $ 13 | $ 75 | $ 45
COVID-19 expenses | 16 | 85 | 18 | 85
Others | (22) | 95 | (51) | 106
Total | 74 | 237 | 86 | 299
Provisions for litigation |  |  |  |
Costs and expenses by nature |  |  |  |
Provision | $ 28 | $ 44 | $ 44 | $ 63

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- Definition The amount of operating income (expense) that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_85&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of post-employment benefit expense relating to defined contribution plans included in other operational expenses. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods. + References No definition available. + Details
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