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Statements of Changes in Equity (Parenthetical) - R$ / shares | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Statement of changes in equity [abstract] |  |  |
Interim dividends, paid per share | R$ 0.56 | R$ 0.85 | R$ 0.80
Proposed dividends, per share | R$ 0.70 | R$ 0.90 | R$ 0.87

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- References No definition available. + Details
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Namespace Prefix: | ifrs-full_
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- Definition Interim dividends per share. + References No definition available. + Details
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Namespace Prefix: | ugp_
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- Definition Proposed dividends per share. + References No definition available. + Details
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Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration