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Presentation of Financial Statements and Summary of Significant Accounting Policies - Summary of difference between the lease obligation disclosed under IAS 17 To IFRS 16 (Detail) - BRL (R$) R$ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of Difference Between the Lease Obligation Disclosed Under IAS Seventeen to IFRS 16 [Line Items]
Leases payable recognized on January 1, 2019	R$ 1,348,311	R$ 1,833,288	R$ 1,588,673	R$ 46,066

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- Definition

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2021-01-01
-Paragraph 47
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2021-03-24

+ Details

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

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- References

No definition available.

+ Details

Name:	ugp_DisclosureOfDifferenceBetweenTheLeaseObligationDisclosedUnderIasSeventeenToIfrs16LineItems
Namespace Prefix:	ugp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration