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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, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of deferred income and social contribution taxes [line items]      
Initial balance   R$ 504,890 R$ 530,419
Deferred IRPJ and CSLL recognized in income of the year R$ 97,465 (162,417) 109,204
Deferred IRPJ and CSLL recognized in other comprehensive income 40,497 133,124 13,389
Deferred IRPJ and CSLL recognized in business combination   1,054 (45,728)
Others 3,311 2,710 1,581
Final balance 646,163   504,890
Previously stated [member]      
Disclosure of deferred income and social contribution taxes [line items]      
Initial balance 530,419   R$ 451,973
Final balance R$ 504,890 R$ 530,419