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Commitments - Additional Information (Detail)	Dec. 31, 2024 m³ T
Aratu [member]
Disclosure of commitments and contingencies [line items]
Cargo rates per ton	9.64
Suape [member]
Disclosure of commitments and contingencies [line items]
Cargo rates per ton	3.05
Itaqui [Member]
Disclosure of commitments and contingencies [line items]
Cargo rates per ton | m³	0.98

X

- Definition

The per ton amount of cargo rates.

+ References

No definition available.

+ Details

Name:	ugp_CargoRatesPerTon
Namespace Prefix:	ugp_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Disclosure of commitments and contingencies.

+ References

No definition available.

+ Details

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

X

- Details

Name:	ifrs-full_TypesOfContractsAxis=ugp_AratuMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfContractsAxis=ugp_SuapeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfContractsAxis=ugp_ItaquiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: