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5 Risk management (Details 4) | 12 Months Ended
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Dec. 31, 2020
Banco do brasil S/A [member] | Moody's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | Aa1.br
Banco do brasil S/A [member] | Fitch [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | AA(bra)
Brazilian Federal Savings Bank | Standard Poor's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | brAAA
Brazilian Federal Savings Bank | Moody's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | Aa1.br
Brazilian Federal Savings Bank | Fitch [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | AA(bra)
Banco Bradesco S/A | Standard Poor's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | brAAA
Banco Bradesco S/A | Moody's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | Aa1.br
Banco Bradesco S/A | Fitch [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | AAA(bra)
Itau Unibanco Holding S/A | Standard Poor's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | brAAA
Itau Unibanco Holding S/A | Moody's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | Aa1.br
Itau Unibanco Holding S/A | Fitch [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | AAA(bra)
Banco BTG Pactual S/A [member] | Fitch [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | AA(bra)
Banco BTG Pactual S/A [member] | Moody's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | Aa2.br
Banco BTG Pactual S/A [member] | Standard Poor's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | brAA+
Banco santander brasil S/A [member] | Standard Poor's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | brAAA
Banco santander brasil S/A [member] | Moody's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | Aaa.br
Banco BV [member] | Moody's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | Aa3.br
Banco BV [member] | Standard Poor's [member] |
Summary of risk management [Line Items] |
Credit rating information of the banks | brAAA

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