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Schedule of cash and cash equivalents (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
IfrsStatementLineItems [Line Items] |  |  |  |
Cash and banks | R$ 10,076,037 | R$ 4,144,467 |  |
Total short-term investments | 6,570,443 | 5,800,119 |  |
Cash and cash equivalents | 16,646,480 | 9,944,586 | R$ 1,088,955 | R$ 2,248,004
B R [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Cash and banks | 68,638 | 245,185 |  |
Total short-term investments | 6,493,832 | 5,800,119 |  |
Abroad [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Cash and banks | 10,007,399 | R$ 3,899,282 |  |
Total short-term investments | R$ 76,611 |  |  |

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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 2021-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_45&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2021-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_i&doctype=Standard -URIDate 2021-03-24 + Details
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