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Equity - Summary of Balances and Changes in Dividends Payable (Detail) - BRL (R$) R$ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Equity [Abstract] |  |  |
Beginning balance | R$ 334,641 | R$ 48,525 | R$ 202,860
Provisions | 829,857 | 688,189 | 429,964
Prescribed dividends | (3,369) | (2,048) | (2,948)
Payments | (833,658) | (400,025) | (581,351)
Ending balance | R$ 327,471 | R$ 334,641 | R$ 48,525

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- Definition The amount of current dividend payables. [Refer: Dividend payables] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition The amount of dividends recognised as distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 107 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_107&doctype=Standard -URIDate 2024-03-27 + Details
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- References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of dividends paid/offset to equity holders during the reporting period. + References No definition available. + Details
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Namespace Prefix: | ugp_
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Balance Type: | credit
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- Definition The amount of unclaimed dividends forfeited during the reporting period. + References No definition available. + Details
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