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Related parties - Transactions with related parties (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Transactions with related parties |  |  |
Net operating revenue | $ 797 | $ 872 | $ 868
Cost and operating expenses | (976) | (1,781) | (2,308)
Financial result | (20) | 19 |
Joint Ventures |  |  |
Transactions with related parties |  |  |
Net operating revenue | 372 | 374 | 352
Cost and operating expenses | (951) | (1,749) | (2,269)
Financial result | 27 | 49 | 115
Associates |  |  |
Transactions with related parties |  |  |
Net operating revenue | 240 | 294 | 309
Cost and operating expenses | (25) | (32) | (39)
Financial result | 2 | (1) |
Major Stockholders |  |  |
Transactions with related parties |  |  |
Net operating revenue | 185 | 204 | 207
Financial result | $ (49) | $ (29) | $ (115)

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- References No definition available. + Details
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- Definition The amount of revenue arising from the sale of goods in related party transactions. [Refer: Revenue; Related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 24 -IssueDate 2020-01-01 -Paragraph 21 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2020-en-r&anchor=para_21_a&doctype=Standard -URIDate 2020-01-01 + Details
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