XML 121 R77.htm IDEA: XBRL DOCUMENT v3.20.2
Securities purchased (sold) under resale (repurchase) agreements - Summary of securities purchased under agreements to resell (Detail) - BRL (R$)
R$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Summary of securities purchased under agreements to resell [Line Items]          
Securities purchased under agreements to resell R$ 309,053 R$ 654,057 R$ 133,028 R$ 488,809 R$ 420,958
Available portfolio [member]          
Summary of securities purchased under agreements to resell [Line Items]          
Securities purchased under agreements to resell 3,294,442 971,991   488,809  
Available portfolio [member] | National treasury notes [member]          
Summary of securities purchased under agreements to resell [Line Items]          
Securities purchased under agreements to resell 3,221,176 771,099   65,136  
Available portfolio [member] | Financial Treasury Bills [member]          
Summary of securities purchased under agreements to resell [Line Items]          
Securities purchased under agreements to resell   195,980   38,014  
Available portfolio [member] | National Treasury Bills [member]          
Summary of securities purchased under agreements to resell [Line Items]          
Securities purchased under agreements to resell 73,266 4,912   385,659  
Collateral held [member]          
Summary of securities purchased under agreements to resell [Line Items]          
Securities purchased under agreements to resell 11,622,352 8,518,099   6,081,800  
Collateral held [member] | National treasury notes [member]          
Summary of securities purchased under agreements to resell [Line Items]          
Securities purchased under agreements to resell 11,328,565 6,753,689   1,170,165  
Collateral held [member] | National Treasury Bills [member]          
Summary of securities purchased under agreements to resell [Line Items]          
Securities purchased under agreements to resell 293,787 1,764,410   4,911,635  
Securities purchased under agreements to resell [member]          
Summary of securities purchased under agreements to resell [Line Items]          
Securities purchased under agreements to resell R$ 14,916,794 R$ 9,490,090   R$ 6,570,609