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Trade receivables, reseller financing and other receivables - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2024
Bottom of range [member]
Summary of trade receivables [line items]
Reseller financing average payment term	12 months
Top of range [member]
Summary of trade receivables [line items]
Reseller financing average payment term	60 months

X

- Definition

The average payment term of reseller financing.

+ References

No definition available.

+ Details

Name:	ugp_ResellerFinancingAveragePaymentTerm
Namespace Prefix:	ugp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Summary of trade receivables.

+ References

No definition available.

+ Details

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

X

- Details

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

X

- Details

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