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Intangible assets - Balances of goodwill (Detail) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disclosure of reconciliation of changes in goodwill [line items]
Goodwill	R$ 982,359	R$ 943,125
Ipiranga [member]
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ipiranga
Goodwill	R$ 276,724	276,724
Uniao Terminais [member]
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ultracargo
Goodwill	R$ 211,089	211,089
Texaco [member]
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ipiranga
Goodwill	R$ 177,759	177,759
Stella [member]
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ultragaz
Goodwill	R$ 103,051	103,051
Iconic (CBLSA)[member]
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ipiranga
Goodwill	R$ 69,807	69,807
WTZ (27.b) [member]
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ultragaz
Goodwill	R$ 52,038	0
Temmar [member]
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ultracargo
Goodwill	R$ 43,781	43,781
DNP [member]
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ipiranga
Goodwill	R$ 24,736	24,736
Repsol [member]
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ultragaz
Goodwill	R$ 13,403	13,403
Neogás [Member]
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ultragaz
Goodwill	R$ 7,761	7,761
Serra Diesel
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ultrapar
Goodwill	R$ 1,413	14,217
TEAS Terminal Exportador de Alcool de Santos Ltda. [member]
Disclosure of reconciliation of changes in goodwill [line items]
Segment	Ultracargo
Goodwill	R$ 797	R$ 797

X

- Definition

The amount of additional goodwill recognised, except goodwill included in a disposal group that, on acquisition, meets the criteria to be classified as held for sale in accordance with IFRS 5. [Refer: Goodwill; Disposal groups classified as held for sale [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph B67
-Subparagraph d
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67_d_ii&doctype=Appendix&subtype=B
-URIDate 2024-03-27

+ Details

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X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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X

- Definition

The description of goodwill acquisition segment.

+ References

No definition available.

+ Details

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