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Employee Benefits and Private Pension Plan - Post-employment Benefits (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Summary of employee benefits [line items]      
Total R$ 272,867 R$ 249,815 R$ 237,523
Current 28,951 45,655  
Non-current 243,916 204,160  
Health and dental care plan [member]      
Summary of employee benefits [line items]      
Total 154,142 112,628  
Indemnification of FGTS [member]      
Summary of employee benefits [line items]      
Total 66,309 83,781  
Seniority bonus [member]      
Summary of employee benefits [line items]      
Total 34,485 37,397  
Life insurance [member]      
Summary of employee benefits [line items]      
Total R$ 17,931 R$ 16,009