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Earnings per Share - Additional Information (Detail)	Feb. 19, 2020 shares
Disclosure of non-adjusting events after reporting period [line items]
Rights outstanding	2,108,542
Major ordinary share transactions [member]
Disclosure of non-adjusting events after reporting period [line items]
Rights outstanding	2,108,542

X

- Definition

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

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Exercise of warrants rights outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	ugp_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: