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Taxes - Summary of Tax Liabilities (Detail) - BRL (R$)
R$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Disclosure Of Tax Liabilities [Abstract]    
Taxes and contributions on income payable R$ 3,083 R$ 615
Other Taxes and Contributions payable 914 1,443
Provision for deferred income tax and social contribution (Note 24b II) 1,058 447
Other 2,836 2,779
Tax liabilities R$ 7,891 R$ 5,284