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v3.21.1

Provisions and Contingencies - Additional information (Detail) R$ in Thousands |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
May 15, 2019 BRL (R$) | Dec. 31, 2020 BRL (R$) claim | Dec. 31, 2019 BRL (R$) claim | Dec. 01, 2020 BRL (R$) | Dec. 01, 2019 BRL (R$) | Dec. 01, 2017 BRL (R$) | Nov. 22, 2017 BRL (R$) | Sep. 06, 2017 BRL (R$)
Disclosure of collateral and contractual commitments [line items] |  |  |  |  |  |  |  |
Escrow deposits made under preliminary injunction |  | R$ 523,136 | R$ 515,825 |  |  |  |  |
Profit or loss on provision |  | 746,962 | 338,110 |  |  |  |  |
Provisions for lawsuits and administrative proceedings |  | 57,772 | 85,855 |  |  |  |  |
Provisions for labor litigation filed by former employees |  | 90,675 | 98,010 |  |  |  |  |
Possible contingency |  | 3,236,982 | 2,840,086 |  |  |  |  |
Contingent liabilities for tax matters and social security |  | 2,419,000 | 2,028,159 |  |  |  |  |
IPIContingency |  | 176,390 | 173,738 |  |  |  |  |
Legal Proceedings Related To Icms |  | 958,134 | 836,822 |  |  |  |  |
ICMS credits |  | 300,707 | 319,849 |  |  |  |  |
Reversal of ICMS credits |  | 92,687 | 126,772 |  |  |  |  |
Reversal of alleged non-payment |  | 98,157 | 92,567 |  |  |  |  |
Reversal of inventory differences |  | 269,581 | 172,736 |  |  |  |  |
Reversal of conditioned fruition of fiscal incentive |  | 119,894 | 117,753 |  |  |  |  |
Offset claims and credit dis-allowances |  | 709,338 | 699,360 |  |  |  |  |
Amortization of goodwill paid on acquisition of subsidiary |  | 212,350 | 208,449 |  |  |  |  |
Contingent liabilities for civil, environmental and regulatory claims |  | R$ 561,713 | R$ 549,664 |  |  |  |  |
Number of lawsuits for civil, environmental and regulatory claims | claim |  | 2,840 | 3,109 |  |  |  |  |
Penalty on Ultragaz |  | R$ 33,895 | R$ 33,603 |  |  |  |  |
Contingent liabilities not recognized to lawsuits |  | 4,428 | 11,403 |  |  |  |  |
Contingent liabilities for labor matters |  | R$ 256,269 | R$ 262,263 |  |  |  |  |
Number of lawsuits for labor matters | claim |  | 1,306 | 1,649 |  |  |  |  |
Compensation suit against damages | R$ 67,539 |  |  |  |  |  |  |
Fisheries management project [member] |  |  |  |  |  |  |  |
Disclosure of collateral and contractual commitments [line items] |  |  |  |  |  |  |  |
Compensation amount paid |  | R$ 13,000 |  |  |  |  |  |
Subsidiary IPP [member] |  |  |  |  |  |  |  |
Disclosure of collateral and contractual commitments [line items] |  |  |  |  |  |  |  |
Provisions for lawsuits and administrative proceedings |  | 27,995 |  |  |  |  |  |
Penalty on administrative proceedings |  | R$ 40,693 |  |  |  |  |  |
Bottom of range [member] |  |  |  |  |  |  |  |
Disclosure of collateral and contractual commitments [line items] |  |  |  |  |  |  |  |
Percentage of possible loss contingency |  | 25.00% |  |  |  |  |  |
Top of range [member] |  |  |  |  |  |  |  |
Disclosure of collateral and contractual commitments [line items] |  |  |  |  |  |  |  |
Percentage of possible loss contingency |  | 50.00% |  |  |  |  |  |
Cia. Ultragaz and Bahiana [member] |  |  |  |  |  |  |  |
Disclosure of collateral and contractual commitments [line items] |  |  |  |  |  |  |  |
Liability provisions |  |  |  |  |  |  | R$ 95,987 | R$ 2,154
Three employees and one former employee [member] |  |  |  |  |  |  |  |
Disclosure of collateral and contractual commitments [line items] |  |  |  |  |  |  |  |
Liability provisions |  |  |  |  |  |  | R$ 1,100 |
Two former employees, each [member] |  |  |  |  |  |  |  |
Disclosure of collateral and contractual commitments [line items] |  |  |  |  |  |  |  |
Liability provisions |  |  |  |  |  |  |  | R$ 50
Chevron and subsidiary IPP [member] |  |  |  |  |  |  |  |
Disclosure of collateral and contractual commitments [line items] |  |  |  |  |  |  |  |
Liability provisions |  | R$ 101,663 | R$ 5,423 | R$ 102,777 | R$ 188,073 | R$ 198,900 |  |
PIS and COFINS [member] |  |  |  |  |  |  |  |
Disclosure of collateral and contractual commitments [line items] |  |  |  |  |  |  |  |
Profit or loss on provision |  | R$ 215,365 | R$ 141,618 |  |  |  |  |

X
- 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 2019-01-01 -Section Example 10 A court case -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2019-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_C_ex10_TI -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2019-01-01 -Paragraph 87 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2019-en-r&anchor=para_87&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_LegalProceedingsProvision
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amortization of goodwill paid on acquisition of subsidiary. + References No definition available. + Details
Name: | ugp_AmortizationOfGoodwillPaidOnAcquisitionOfSubsidiary
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Compensation amount paid to third parties. + References No definition available. + Details
Name: | ugp_CompensationPaidToParty
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Compensation suit against damages of fish mortality. + References No definition available. + Details
Name: | ugp_CompensationSuitAgainstDamages
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Contingent liabilities for civil environmental and regulatory claims. + References No definition available. + Details
Name: | ugp_ContingentLiabilitiesForCivilEnvironmentalAndRegulatoryClaims
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Contingent liabilities for labor matters. + References No definition available. + Details
Name: | ugp_ContingentLiabilitiesForLaborMatters
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contingent liabilities for tax matters and social security. + References No definition available. + Details
Name: | ugp_ContingentLiabilitiesForTaxMattersAndSocialSecurity
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contingent liabilities not recognized to lawsuit.. + References No definition available. + Details
Name: | ugp_ContingentLiabilitiesNotRecognizedToLawsuit
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represents collateral and contractual commitments. + References No definition available. + Details
Name: | ugp_DisclosureOfCollateralAndContractualCommitmentsLineItems
Namespace Prefix: | ugp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Escrow deposits made under pre liminary injunction. + References No definition available. + Details
Name: | ugp_EscrowDepositsMadeUnderPreLiminaryInjunction
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Icms credits. + References No definition available. + Details
Name: | ugp_IcmsCredits
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Ipi contingency. + References No definition available. + Details
Name: | ugp_IpiContingency
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Legal proceedings related toi cms. + References No definition available. + Details
Name: | ugp_LegalProceedingsRelatedToiCms
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of lawsuits filed for civil, environmental and regulatory claims. + References No definition available. + Details
Name: | ugp_NumberOfLawsuitsFiledForCivilEnvironmentalAndRegulatoryClaims
Namespace Prefix: | ugp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of lawsuits filed for labor matters. + References No definition available. + Details
Name: | ugp_NumberOfLawsuitsFiledForLaborMatters
Namespace Prefix: | ugp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of offset claims and credit disallowances. + References No definition available. + Details
Name: | ugp_OffsetClaimsAndCreditDisallowances
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Penalty on administrative proceedings + References No definition available. + Details
Name: | ugp_PenaltyOnAdministrativeProceedings
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Penalty on ultragaz. + References No definition available. + Details
Name: | ugp_PenaltyOnUltragaz
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage of possible loss contingency. + References No definition available. + Details
Name: | ugp_PercentageOfPossibleLossContingency
Namespace Prefix: | ugp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Possible contingency. + References No definition available. + Details
Name: | ugp_PossibleContingency
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Profit loss on provision for tax civil and labor risks. + References No definition available. + Details
Name: | ugp_ProfitLossOnProvisionForTaxCivilAndLaborRisks
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Provisions for labor litigation filed by former employees. + References No definition available. + Details
Name: | ugp_ProvisionsForLaborLitigationFiledByFormerEmployees
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Provisions for lawsuits and administrative proceedings. + References No definition available. + Details
Name: | ugp_ProvisionsForLawsuitsAndAdministrativeProceedings
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reversal of alleged non-payment. + References No definition available. + Details
Name: | ugp_ReversalOfAllegedNonpayment
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reversal of conditioned fruition of fiscal incentive. + References No definition available. + Details
Name: | ugp_ReversalOfConditionedFruitionOfFiscalIncentive
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reversal of ICMS credits. + References No definition available. + Details
Name: | ugp_ReversalOfICMSCredits
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reversal of inventory differences. + References No definition available. + Details
Name: | ugp_ReversalOfInventoryDifferences
Namespace Prefix: | ugp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_CounterpartiesAxis=ugp_FisheriesManagementProjectMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ugp_SubsidiaryIPPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=ugp_CiaUltragazAndBahianaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=ugp_ThreeEmployeesAndOneFormerEmployeeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=ugp_TwoFormerEmployeesEachMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=ugp_ChevronAndSubsidiaryIPPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ugp_PisAndCofinsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |