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Risk Management (Details 6) - BRL (R$)
R$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Loans and advances to customers past due but not impaired    
Total R$ 10,684,314 R$ 12,612,906
Past due up to 60 days    
Loans and advances to customers past due but not impaired    
Total 8,177,461 9,737,697
Past due between 61 and 90 days    
Loans and advances to customers past due but not impaired    
Total 2,302,186 2,608,305
Past due for more than 90 days    
Loans and advances to customers past due but not impaired    
Total R$ 204,667 R$ 266,904