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Cash and Cash Equivalents and Financial Investments - Cash and cash equivalents (Detail) - BRL (R$) R$ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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Cash and cash equivalents and financial investments details [abstract] |  |  |  |
Cash and bank deposits In local currency | R$ 285,306 | R$ 182,237 |  |
In foreign currency | 119,775 | 102,755 |  |
Fixed-income securities | 2,241,852 | 1,780,939 |  |
Fixed-income securities | 14,561 | 49,448 |  |
Total cash and cash equivalents | R$ 2,661,494 | R$ 2,115,379 | R$ 3,938,951 | R$ 5,002,004

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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_i&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of cash on hand and bank deposits in foreign currency. + References No definition available. + Details
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- Definition Cash and cash equivalents and financial investments details. + References No definition available. + Details
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