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Income and Social Contribution Taxes - Summary of Changes in Balances of Deferred Taxes (Detail) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of deferred income and social contribution taxes [line items]      
Initial balance R$ 646,163 R$ 504,890 R$ 530,419
Deferred IRPJ and CSLL recognized in income of the year 87,939 97,465 (162,417)
Deferred IRPJ and CSLL recognized in other comprehensive income 210,034 40,497 133,124
Deferred IRPJ and CSLL recognized in business combination     1,054
Others 17,843 3,311 2,710
Final balance R$ 961,979 R$ 646,163 R$ 504,890