4. Cash and Cash Equivalents and Financial Investments (Details 1) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Cash And Cash Equivalents And Financial Investments Details 1
Financial investments in local currency, fixed-income securities and funds	R$ 1,153,040	R$ 1,174,458
Financial investments in foreign currency, fixed-income securities and funds	129,131	34,775
Curency and interest rate hedging instruments	85,753	218,458
Total financial investments	1,367,924	1,427,691
Current	1,283,498	1,412,587
Non-current	R$ 84,426	R$ 15,104

A financial asset is any asset that is: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will or may be settled in the entity's own equity instruments and is: (i) a non-derivative for which the entity is or may be obliged to receive a variable number of the entity's own equity instruments; or (ii) a derivative that will or may be settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity's own equity instruments.

No definition available.

Name:	UGP_FinancialInvestments
Namespace Prefix:	UGP_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant