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Income and Social Contribution Taxes - Additional Information (Detail) - BRL (R$)
R$ in Thousands
 12 Months Ended
Sep. 27, 2021
Dec. 31, 2021
Dec. 31, 2020
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred income and social contribution taxes   R$ 688,181 R$ 1,588,001
Threshold amount of gross revenue for calculation of alternative method of taxation for companies   R$ 78,000  
Percentage of operating revenues for calculation of alternative method of taxation for companies   32.00%  
Threshold percentage of taxable income for indefinite expiration of tax loss carryforwards   30.00%  
Tax losses and negative basis for social contribution carryforwards   R$ 148,345 363,862
Income and social contribution tax benefit related to monetary variation (SELIC) on repetition of tax undue payments R$ 106,667    
Ultrapar International S.A. [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Tax losses and negative basis for social contribution carryforwards   8,510 R$ 7,659
Oxiteno S.A. [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred income and social contribution taxes, tax loss carryforwards reclassified to assets held for sale   247,912  
Extrafarma [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred income and social contribution taxes, tax loss carryforwards reclassified to assets held for sale   72,318  
Extrafarma, Oxiteno S.A., Oleoquimica and EMCA [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred income and social contribution taxes, tax loss carryforwards reclassified to assets held for sale   R$ 74,243