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Provisions and contingent liabilities - Additional information (Detail) - BRL (R$) R$ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Aug. 01, 2022 | Apr. 01, 2022 | Dec. 01, 2017
Disclosure of contingent liabilities [line items] |  |  |  |  |
Escrow deposits made under preliminary injunction | R$ 600,259 | R$ 569,415 |  |  |
Possible contingency | 4,013,392 | 3,601,865 |  |  |
Contingent liabilities for tax matters and social security | 3,148,222 | 2,656,479 |  |  |
IPIContingency | 185,388 | 182,446 |  |  |
Legal Proceedings Related To Icms | 1,380,424 | 1,376,199 |  |  |
ICMS credits | 149,061 | 201,408 |  |  |
Reversal of alleged non-payment | 196,693 | 178,825 |  |  |
Reversal of inventory differences | 282,254 | 302,143 |  |  |
Reversal of conditioned fruition of fiscal incentive | 193,912 | 193,785 |  |  |
Offset claims and credit dis-allowances | 1,394,010 | 759,469 |  |  |
Amortization of goodwill paid on acquisition of subsidiary | 251,789 | 233,805 |  |  |
Contingent liabilities for civil, environmental and regulatory claims | 624,653 | 690,052 |  |  |
Penalty on Ultragaz | 36,935 | 35,617 |  |  |
Contingent liabilities for labor matters | 240,515 | 255,334 |  |  |
Surcharge on non-essential products | 271,518 | 246,336 |  |  |
Adjustment On Escrow Deposits | R$ 62,217 | R$ 26,969 |  |  |
Subsidiary IPP [member] |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |
Surcharge rate on non-essential products | 2.00% | 2.00% |  |  |
Subsidiary IPP [member] | Receivables Investment Fund (“FIDC”) |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |
Percentage of receivables from an action for damages as contingent asset |  | 90.00% |  |  |
Action for damages as a contingent asset, initial fixed amount recognized |  | R$ 140,000 |  |  |
Action for damages as a contingent asset, amount received |  | 60,000 |  |  |
Action for damages as contingent asset, remaining portion will be received |  | 80,000 |  |  |
Cia Ultragaz [member] |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |
Contingent liabilities for civil, environmental and regulatory claims | R$ 113,756 | 255,290 |  |  |
Discontinued operations | Oxiteno S. A. Industria e Comercio [member] |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |
Provision for indemnities |  |  |  | R$ 168,568 |
Provision for indemnities related to labor claims |  |  |  | 92,823 |
Provision for indemnities related to civil claims |  |  |  | 17,584 |
Provision for indemnities related to tax claims |  |  |  | R$ 58,160 |
Discontinued operations | Extrafarma [member] |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |
Provision for indemnities |  |  | R$ 35,075 |  |
Provision for indemnities related to labor claims |  |  | 16,259 |  |
Provision for indemnities related to civil claims |  |  | 6,420 |  |
Provision for indemnities related to tax claims |  |  | R$ 12,395 |  |
Chevron and subsidiary IPP [member] |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |
Liability provisions | 29,022 | 26,010 |  |  |
Contingent liabilities for labor matters | 3,030 |  |  |  |
Contingent liabilities for tax assessments on sales | 25,777 |  |  |  |
Chevron and subsidiary IPP [member] | Subsidiary IPP [member] |  |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |  |
Liability provisions | R$ 95,905 | R$ 100,548 |  |  | R$ 198,900

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- Definition The amount of the estimated financial effect of possible assets that arise from past events and whose existence will be confirmed only by the occurrence or non-occurrence of one or more uncertain future events not wholly within control of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2023-01-01 -Paragraph 89 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&anchor=para_89&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of provision for legal proceedings. [Refer: Other provisions] + 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 fixed amount recognized initially for action for damages as a contingent asset, during the reporting period. + References No definition available. + Details
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- Definition The amount of escrow deposits made under preliminary injunction. + References No definition available. + Details
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- Definition The amount of Icms credits for contingent liabilities. + References No definition available. + Details
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