XML 84 R105.htm IDEA: XBRL DOCUMENT
v3.20.1

Related Parties - Changes of Number of Shares Granted (Detail) - shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Related parties details 3 [abstract] |  |
Share granted, beginning | 1,700,128 | 2,366,796
Cancellation of granted shares due to termination of executive employment |  | (433,332)
Shares vested and transferred | (475,604) | (233,336)
Share granted, ending | 1,224,524 | 1,700,128

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

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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

X
- 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