XML 138 R111.htm IDEA: XBRL DOCUMENT
v3.19.1

Related Parties - Changes of Number of Shares Granted (Detail) - shares | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Related parties details 3 [abstract] |  |
Share granted, beginning | 1,183,398 | 1,500,072
Shares granted on March 4, 2017 |  | 100,000
Forfeiture of granted shares due to termination of executive employment | (216,666) | (143,333)
Shares vested and transferred | (116,668) | (273,341)
Share granted, ending | 850,064 | 1,183,398

X
- Definition Cancellation of granted shares due to termination of executive employment. + References No definition available. + Details
Name: | ugp_CancellationOfGrantedSharesDueToTerminationOfExecutiveEmployment
Namespace Prefix: | ugp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Forfeiture of shares granted in a share-based payment arrangement. + References No definition available. + Details
Name: | ugp_ForfeitureOfSharesGranted
Namespace Prefix: | ugp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Related parties details 3. + References No definition available. + Details
Name: | ugp_RelatedPartiesDetails3Abstract
Namespace Prefix: | ugp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Share options granted in sharebased payment arrangement. + References No definition available. + Details
Name: | ugp_ShareOptionsGrantedInSharebasedPaymentArrangement
Namespace Prefix: | ugp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares vested and transferred in a share-based payment arrangement. + References No definition available. + Details
Name: | ugp_SharesVestedTransferredDuringPeriodSharebasedPaymentArrangement
Namespace Prefix: | ugp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration