No definition available.

Name:	UGP_SummaryOfEmployeeBenefitsLineItems
Namespace Prefix:	UGP_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of current provisions for employee benefits. [Refer: Provisions for employee benefits]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2016-01-13
-Paragraph 78
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_78_d&doctype=Standard
-URIDate 2016-03-31

+ Details

Name:	ifrs-full_CurrentProvisionsForEmployeeBenefits
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of non-current provisions for employee benefits. [Refer: Provisions for employee benefits]

+ References

+ Details

Name:	ifrs-full_NoncurrentProvisionsForEmployeeBenefits
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of provisions for employee benefits. [Refer: Employee benefits expense; Provisions]

+ References

+ Details

Name:	ifrs-full_ProvisionsForEmployeeBenefits
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	UGP_PostEmploymentBenefitsAxis=UGP_HealthAndDentalCareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	UGP_PostEmploymentBenefitsAxis=UGP_FGTSPenaltyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	UGP_PostEmploymentBenefitsAxis=UGP_BonusMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	UGP_PostEmploymentBenefitsAxis=UGP_LifeInsuranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

18. Employee Benefits and Private Pension Plan (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
SummaryOfEmployeeBenefitsLineItems [Line Items]
Total	R$ 237,523	R$ 144,751	R$ 126,595
Current	30,059	24,940
Non-current	207,464	119,811
Health and dental care plan
SummaryOfEmployeeBenefitsLineItems [Line Items]
Total	99,767	32,826
FGTS Penalty
SummaryOfEmployeeBenefitsLineItems [Line Items]
Total	81,831	64,654
Bonus
SummaryOfEmployeeBenefitsLineItems [Line Items]
Total	40,254	32,815
Life Insurance
SummaryOfEmployeeBenefitsLineItems [Line Items]
Total	R$ 15,671	R$ 14,456