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Securitization Transactions - Collateralized Debt (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Collateralized debt	$ 1,296	$ 1,238
Mercado Crédito I Brasil Fundo de Investimento Em Direitos Creditórios Não Padronizados
Debt Instrument [Line Items]
Collateralized debt	198
Fundo de Investimento Em DireitosCreditórios Arandu
Debt Instrument [Line Items]
Collateralized debt	198
Mercado Crédito Fundo de Investimento Em Direitos Creditórios Não Padronizado
Debt Instrument [Line Items]
Collateralized debt	3
Olimpia Fundo de Investimento Em Direitos Creditórios
Debt Instrument [Line Items]
Collateralized debt	103
Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados
Debt Instrument [Line Items]
Collateralized debt	222
Mercado Crédito Consumo IX
Debt Instrument [Line Items]
Collateralized debt	2
Mercado Crédito Consumo X
Debt Instrument [Line Items]
Collateralized debt	5
Mercado Crédito Consumo XI
Debt Instrument [Line Items]
Collateralized debt	6
Mercado Crédito Consumo XII
Debt Instrument [Line Items]
Collateralized debt	9
Mercado Crédito Consumo XIII
Debt Instrument [Line Items]
Collateralized debt	13
Mercado Crédito Consumo XIV
Debt Instrument [Line Items]
Collateralized debt	14
Mercado Crédito Consumo XV
Debt Instrument [Line Items]
Collateralized debt	14
Mercado Crédito Consumo XVI
Debt Instrument [Line Items]
Collateralized debt	14
Mercado Crédito Consumo XVII
Debt Instrument [Line Items]
Collateralized debt	15
Mercado Crédito Consumo XVIII
Debt Instrument [Line Items]
Collateralized debt	19
Mercado Credito Consumo XIX
Debt Instrument [Line Items]
Collateralized debt	19
Mercado Crédito XIV
Debt Instrument [Line Items]
Collateralized debt	2
Mercado Crédito XV
Debt Instrument [Line Items]
Collateralized debt	6
Mercado Crédito XVI
Debt Instrument [Line Items]
Collateralized debt	11
Mercado Crédito XVII
Debt Instrument [Line Items]
Collateralized debt	12
Mercado Crédito XVIII
Debt Instrument [Line Items]
Collateralized debt	19
Fideicomiso de administración y fuente de pago CIB/3756
Debt Instrument [Line Items]
Collateralized debt	166
Fideicomiso de administración y fuente de pago CIB/3369
Debt Instrument [Line Items]
Collateralized debt	$ 226
CDI | Mercado Crédito I Brasil Fundo de Investimento Em Direitos Creditórios Não Padronizados
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%
CDI | Fundo de Investimento Em DireitosCreditórios Arandu
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
CDI | Mercado Crédito Fundo de Investimento Em Direitos Creditórios Não Padronizado
Debt Instrument [Line Items]
Basis spread on variable rate	3.50%
CDI | Olimpia Fundo de Investimento Em Direitos Creditórios
Debt Instrument [Line Items]
Basis spread on variable rate	1.25%
CDI | Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados
Debt Instrument [Line Items]
Basis spread on variable rate	1.90%
BADLAR Rate | Mercado Crédito Consumo IX
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito Consumo X
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito Consumo XI
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito Consumo XII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito Consumo XIII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito Consumo XIV
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito Consumo XVI
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito Consumo XVII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito Consumo XVIII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Credito Consumo XIX
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito XIV
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito XV
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito XVI
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito XVII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Mercado Crédito XVIII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate | Minimum | Mercado Crédito Consumo IX
Debt Instrument [Line Items]
Effective interest rate	30.00%
BADLAR Rate | Minimum | Mercado Crédito Consumo X
Debt Instrument [Line Items]
Effective interest rate	35.00%
BADLAR Rate | Minimum | Mercado Crédito Consumo XI
Debt Instrument [Line Items]
Effective interest rate	35.00%
BADLAR Rate | Minimum | Mercado Crédito Consumo XII
Debt Instrument [Line Items]
Effective interest rate	35.00%
BADLAR Rate | Minimum | Mercado Crédito Consumo XIII
Debt Instrument [Line Items]
Effective interest rate	35.00%
BADLAR Rate | Minimum | Mercado Crédito Consumo XIV
Debt Instrument [Line Items]
Effective interest rate	35.00%
BADLAR Rate | Minimum | Mercado Crédito Consumo XV
Debt Instrument [Line Items]
Effective interest rate	35.00%
BADLAR Rate | Minimum | Mercado Crédito Consumo XVI
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate | Minimum | Mercado Crédito Consumo XVII
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate | Minimum | Mercado Crédito Consumo XVIII
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate | Minimum | Mercado Credito Consumo XIX
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate | Minimum | Mercado Crédito XIV
Debt Instrument [Line Items]
Effective interest rate	30.00%
BADLAR Rate | Minimum | Mercado Crédito XV
Debt Instrument [Line Items]
Effective interest rate	30.00%
BADLAR Rate | Minimum | Mercado Crédito XVI
Debt Instrument [Line Items]
Effective interest rate	35.00%
BADLAR Rate | Minimum | Mercado Crédito XVII
Debt Instrument [Line Items]
Effective interest rate	35.00%
BADLAR Rate | Minimum | Mercado Crédito XVIII
Debt Instrument [Line Items]
Effective interest rate	35.00%
BADLAR Rate | Maximum | Mercado Crédito Consumo IX
Debt Instrument [Line Items]
Effective interest rate	52.00%
BADLAR Rate | Maximum | Mercado Crédito Consumo X
Debt Instrument [Line Items]
Effective interest rate	62.00%
BADLAR Rate | Maximum | Mercado Crédito Consumo XI
Debt Instrument [Line Items]
Effective interest rate	63.00%
BADLAR Rate | Maximum | Mercado Crédito Consumo XII
Debt Instrument [Line Items]
Effective interest rate	70.00%
BADLAR Rate | Maximum | Mercado Crédito Consumo XIII
Debt Instrument [Line Items]
Effective interest rate	74.00%
BADLAR Rate | Maximum | Mercado Crédito Consumo XIV
Debt Instrument [Line Items]
Effective interest rate	80.00%
BADLAR Rate | Maximum | Mercado Crédito Consumo XV
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Effective interest rate	92.00%
BADLAR Rate | Maximum | Mercado Crédito Consumo XVI
Debt Instrument [Line Items]
Effective interest rate	92.00%
BADLAR Rate | Maximum | Mercado Crédito Consumo XVII
Debt Instrument [Line Items]
Effective interest rate	92.00%
BADLAR Rate | Maximum | Mercado Crédito Consumo XVIII
Debt Instrument [Line Items]
Effective interest rate	92.00%
BADLAR Rate | Maximum | Mercado Credito Consumo XIX
Debt Instrument [Line Items]
Effective interest rate	92.00%
BADLAR Rate | Maximum | Mercado Crédito XIV
Debt Instrument [Line Items]
Effective interest rate	48.00%
BADLAR Rate | Maximum | Mercado Crédito XV
Debt Instrument [Line Items]
Effective interest rate	56.00%
BADLAR Rate | Maximum | Mercado Crédito XVI
Debt Instrument [Line Items]
Effective interest rate	80.00%
BADLAR Rate | Maximum | Mercado Crédito XVII
Debt Instrument [Line Items]
Effective interest rate	88.00%
BADLAR Rate | Maximum | Mercado Crédito XVIII
Debt Instrument [Line Items]
Effective interest rate	92.00%
Diario Oficial | Fideicomiso de administración y fuente de pago CIB/3756
Debt Instrument [Line Items]
Effective interest rate	1.90%
Diario Oficial | Fideicomiso de administración y fuente de pago CIB/3369
Debt Instrument [Line Items]
Effective interest rate	3.00%

X

- Definition

The value of the collateral (typically cash) that the entity receives in a financing transaction in exchange for securities lent. This item represents a liability in the financial statements of the lender of the securities.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 25
-Paragraph 8
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- Definition

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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