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Schedule of exposure to interest rates (Details)
R$ in Thousands
Dec. 31, 2021
BRL (R$)
IfrsStatementLineItems [Line Items]  
Notional assets R$ 8,348,052
Notional liabilities (24,337,338)
Derivative financial instruments
Exposure, Net (15,989,286)
Total assets 8,348,052
Total liabilities (25,456,030)
Total derivative financial instruments (223,949)
Total exposure, net (17,331,927)
Fixed Reais [Member] | Fixed interest rate [member]  
IfrsStatementLineItems [Line Items]  
Notional assets 199,904
Notional liabilities (427,102)
Derivative financial instruments (8,454,971)
Exposure, Net (8,682,169)
Fixed U S Dollars [Member] | Fixed interest rate [member]  
IfrsStatementLineItems [Line Items]  
Notional assets 2,489,430
Notional liabilities (16,114,760)
Derivative financial instruments 7,036,609
Exposure, Net (6,588,721)
Fixed Turkish Liras [Member] | Fixed interest rate [member]  
IfrsStatementLineItems [Line Items]  
Notional assets 147,313
Notional liabilities (452,917)
Derivative financial instruments
Exposure, Net (305,604)
Fixed Euros [Member] | Fixed interest rate [member]  
IfrsStatementLineItems [Line Items]  
Notional assets 87,385
Notional liabilities (1,053,534)
Derivative financial instruments 1,539,537
Exposure, Net 573,388
Fixed Other [Member] | Fixed interest rate [member]  
IfrsStatementLineItems [Line Items]  
Notional assets 614,129
Notional liabilities
Derivative financial instruments (121,175)
Exposure, Net 492,954
Floating I P C A Reais [Member] | Floating interest rate [member]  
IfrsStatementLineItems [Line Items]  
Notional assets
Notional liabilities (4,331,732)
Derivative financial instruments 3,300,000
Exposure, Net (1,031,732)
Floating C D I Reais [Member] | Floating interest rate [member]  
IfrsStatementLineItems [Line Items]  
Notional assets 4,809,891
Notional liabilities (1,678,268)
Derivative financial instruments (3,300,000)
Exposure, Net (168,377)
Floating Libor U S Dollars [Member] | Floating interest rate [member]  
IfrsStatementLineItems [Line Items]  
Notional assets
Notional liabilities (279,025)
Derivative financial instruments
Exposure, Net (279,025)
Interest And Fair Value Adjustment Of Derivatives [Member]  
IfrsStatementLineItems [Line Items]  
Notional assets
Notional liabilities (1,118,692)
Derivative financial instruments (223,949)
Exposure, Net R$ (1,342,641)