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Provisions and contingent liabilities - Breakdown of provisions by nature (Detail) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of other provisions [line items] |  |  |  |  |
Beginning balance |  | R$ 1,040,172 | R$ 932,185 | R$ 898,045 |
Additions |  | 293,550 | 239,013 | 188,794 |
Reversals |  | (100,575) | (87,807) | (106,093) |
Payments |  | (70,128) | (84,939) | (25,184) |
Interest |  | 139,864 | 41,720 | 15,608 |
Acquisition of subsidiary (i) | [1] | 1,247 |  |  |
Reclassification to liabilities held for sale | [2] |  |  | (38,985) |
Ending Balance |  | 1,304,130 | 1,040,172 | 932,185 |
Current |  | 45,828 | 22,837 | 119,942 | R$ 43,660
Non-current |  | 1,258,302 | 1,017,335 | 812,243 | R$ 854,385
IRPJ and CSLL [member] |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Beginning balance |  | 559,217 | 552,172 | 547,862 |
Additions |  | 14,597 | 7,154 | 0 |
Reversals |  | (6,717) | (36,683) | (6,966) |
Payments |  | 0 | 0 | 0 |
Interest |  | 69,070 | 36,574 | 11,276 |
Acquisition of subsidiary (i) | [1] | 0 |  |  |
Reclassification to liabilities held for sale | [2] |  |  | 0 |
Ending Balance |  | 636,167 | 559,217 | 552,172 |
ICMS - State VAT [member] |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Beginning balance |  | 68,434 | 84,155 | 108,568 |
Additions |  | 46,743 | 35,238 | 58,839 |
Reversals |  | (21,148) | (14,907) | (83,536) |
Payments |  | (14,747) | (38,097) | 0 |
Interest |  | 27,101 | 2,045 | 284 |
Acquisition of subsidiary (i) | [1] | 789 |  |  |
Reclassification to liabilities held for sale | [2] |  |  | 0 |
Ending Balance |  | 107,172 | 68,434 | 84,155 |
Civil, environmental and regulatory claims [member] |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Beginning balance |  | 93,416 | 108,761 | 57,772 |
Additions |  | 124,857 | 18,326 | 87,066 |
Reversals |  | (29,402) | (9,980) | (9,702) |
Payments |  | (39,071) | (23,700) | (8,116) |
Interest |  | 0 | 9 | 724 |
Acquisition of subsidiary (i) | [1] | 458 |  |  |
Reclassification to liabilities held for sale | [2] |  |  | (18,983) |
Ending Balance |  | 150,258 | 93,416 | 108,761 |
Labor [member] |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Beginning balance |  | 73,172 | 95,460 | 90,675 |
Additions |  | 27,333 | 22,663 | 42,826 |
Reversals |  | (27,308) | (22,387) | (4,432) |
Payments |  | (16,310) | (23,142) | (17,068) |
Interest |  | 2,257 | 578 | 2,620 |
Acquisition of subsidiary (i) | [1] | 0 |  |  |
Reclassification to liabilities held for sale | [2] |  |  | (19,161) |
Ending Balance |  | 59,144 | 73,172 | 95,460 |
Provision for indemnities [member] |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Beginning balance |  | 150,820 | 0 |  |
Additions |  | 32,691 | 150,820 |  |
Reversals |  | (7,969) | 0 |  |
Payments |  | 0 | 0 |  |
Interest |  | 28,238 | 0 |  |
Acquisition of subsidiary (i) | [1] | 0 |  |  |
Ending Balance |  | 203,780 | 150,820 | 0 |
Others [Member] |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Beginning balance |  | 95,113 | 91,637 | 93,168 |
Additions |  | 47,329 | 4,812 | 63 |
Reversals |  | (8,031) | (3,850) | (1,457) |
Payments |  | 0 | 0 | 0 |
Interest |  | 13,198 | 2,514 | 704 |
Acquisition of subsidiary (i) | [1] | 0 |  |  |
Reclassification to liabilities held for sale | [2] |  |  | (841) |
Ending Balance |  | R$ 147,609 | R$ 95,113 | R$ 91,637 |
[1] | For further information, see Note 28.
[2] | For further information see Note 29.

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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 2023-01-01 -Paragraph 84 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&anchor=para_84_b&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The decrease in other provisions resulting from the transfer of those provisions to liabilities included in disposal groups classified as held for sale. [Refer: Other provisions; Disposal groups classified as held for sale [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2023-01-01 -Paragraph 84 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&anchor=para_84&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The increase in other provisions through adjustments arising from the passage of time. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2023-01-01 -Paragraph 84 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&anchor=para_84_e&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of non-current provision for legal proceedings. [Refer: Legal proceedings provision] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2023-01-01 -Section Example 10 A court case -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_C_ex10_TI -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2023-01-01 -Paragraph 87 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&anchor=para_87&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2023-01-01 -Paragraph 84 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&anchor=para_84_c&doctype=Standard -URIDate 2023-03-23 + Details
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