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.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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SECURITIZATION TRANSACTIONS - Collateralized Debt (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Collateralized debt	$ 2,096	$ 1,842
Mercado Crédito I Brasil Fundo de Investimento Em Direitos Creditórios Não Padronizados
Debt Instrument [Line Items]
Collateralized debt	140
Mercado Crédito Fundo de Investimento Em Direitos Creditórios Não Padronizado
Debt Instrument [Line Items]
Collateralized debt	17
Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados
Debt Instrument [Line Items]
Collateralized debt	209
Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados
Debt Instrument [Line Items]
Collateralized debt	70
Seller Fundo De Investimento Em Direitos Creditórios
Debt Instrument [Line Items]
Collateralized debt	183
Seller Fundo De Investimento Em Direitos Creditórios
Debt Instrument [Line Items]
Collateralized debt	91
Seller Fundo De Investimento Em Direitos Creditórios
Debt Instrument [Line Items]
Collateralized debt	37
Seller Fundo De Investimento Em Direitos Creditórios
Debt Instrument [Line Items]
Collateralized debt	18
Seller II Fundo De Investimento Em Direitos Creditórios Segmento Meios De Pagamento De Resp Ltda
Debt Instrument [Line Items]
Collateralized debt	175
Mercado Crédito Consumo XXXIV
Debt Instrument [Line Items]
Collateralized debt	7
Mercado Crédito Consumo XXXV
Debt Instrument [Line Items]
Collateralized debt	15
Mercado Crédito XXII
Debt Instrument [Line Items]
Collateralized debt	1
Mercado Crédito XXIII
Debt Instrument [Line Items]
Collateralized debt	8
Mercado Crédito XXIV
Debt Instrument [Line Items]
Collateralized debt	10
Mercado Crédito XXV
Debt Instrument [Line Items]
Collateralized debt	29
Mercado Crédito XXVI
Debt Instrument [Line Items]
Collateralized debt	33
Mercado Crédito XXVII
Debt Instrument [Line Items]
Collateralized debt	31
Mercado Crédito XXVIII
Debt Instrument [Line Items]
Collateralized debt	30
Mercado Crédito XXIX
Debt Instrument [Line Items]
Collateralized debt	31
Mercado Crédito XXX
Debt Instrument [Line Items]
Collateralized debt	38
Mercado Crédito XXXI
Debt Instrument [Line Items]
Collateralized debt	43
Mercado Crédito XXXII
Debt Instrument [Line Items]
Collateralized debt	46
Mercado Crédito XXXIII
Debt Instrument [Line Items]
Collateralized debt	51
Fideicomiso de administración y fuente de pago CIB/3369
Debt Instrument [Line Items]
Collateralized debt	222
Fideicomiso Irrevocable de Administración y Fuente de Pago número CIB/4372
Debt Instrument [Line Items]
Collateralized debt	131
Frontal Trust Mercado Pago Créditos Fondo de Inversión
Debt Instrument [Line Items]
Collateralized debt	8
Frontal Trust Mercado Pago Créditos Fondo de Inversión
Debt Instrument [Line Items]
Collateralized debt	2
Frontal Trust Mercado Pago Créditos Fondo de Inversión
Debt Instrument [Line Items]
Collateralized debt	$ 7
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 \| Mercado Crédito Fundo de Investimento Em Direitos Creditórios Não Padronizado
Debt Instrument [Line Items]
Basis spread on variable rate	3.50%
CDI \| Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados
Debt Instrument [Line Items]
Basis spread on variable rate	2.35%
CDI \| Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados
Debt Instrument [Line Items]
Basis spread on variable rate	5.25%
CDI \| Seller Fundo De Investimento Em Direitos Creditórios
Debt Instrument [Line Items]
Basis spread on variable rate	1.60%
CDI \| Seller Fundo De Investimento Em Direitos Creditórios
Debt Instrument [Line Items]
Basis spread on variable rate	1.80%
CDI \| Seller Fundo De Investimento Em Direitos Creditórios
Debt Instrument [Line Items]
Basis spread on variable rate	1.40%
CDI \| Seller Fundo De Investimento Em Direitos Creditórios
Debt Instrument [Line Items]
Basis spread on variable rate	1.60%
CDI \| Seller II Fundo De Investimento Em Direitos Creditórios Segmento Meios De Pagamento De Resp Ltda
Debt Instrument [Line Items]
Basis spread on variable rate	0.85%
BADLAR Rate \| Mercado Crédito Consumo XXXIV
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito Consumo XXXV
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXIII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXIV
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXV
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXVI
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXVIII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXIX
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXX
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXXI
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXXII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXXIII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXXIV
Debt Instrument [Line Items]
Collateralized debt	$ 57
Basis spread on variable rate	2.00%
BADLAR Rate \| Mercado Crédito XXXV
Debt Instrument [Line Items]
Collateralized debt	$ 61
Basis spread on variable rate	2.00%
BADLAR Rate \| Fideicomiso de administración y fuente de pago CIB/3369
Debt Instrument [Line Items]
Basis spread on variable rate	2.80%
BADLAR Rate \| Minimum \| Mercado Crédito Consumo XXXIV
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito Consumo XXXV
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXII
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXIII
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXIV
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXV
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXVI
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXVII
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXVIII
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXIX
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXX
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXXI
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXXII
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXXIII
Debt Instrument [Line Items]
Effective interest rate	15.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXXIV
Debt Instrument [Line Items]
Effective interest rate	10.00%
BADLAR Rate \| Minimum \| Mercado Crédito XXXV
Debt Instrument [Line Items]
Effective interest rate	10.00%
BADLAR Rate \| Maximum \| Mercado Crédito Consumo XXXIV
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito Consumo XXXV
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXII
Debt Instrument [Line Items]
Effective interest rate	70.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXIII
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXIV
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXV
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXVI
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXVII
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXVIII
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXIX
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXX
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXXI
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXXII
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXXIII
Debt Instrument [Line Items]
Effective interest rate	60.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXXIV
Debt Instrument [Line Items]
Effective interest rate	50.00%
BADLAR Rate \| Maximum \| Mercado Crédito XXXV
Debt Instrument [Line Items]
Effective interest rate	40.00%
TAMAR Rate \| Mercado Crédito XXXVI
Debt Instrument [Line Items]
Collateralized debt	$ 60
Effective interest rate	1.00%
TAMAR Rate \| Minimum \| Mercado Crédito XXXVI
Debt Instrument [Line Items]
Effective interest rate	15.00%
TAMAR Rate \| Maximum \| Mercado Crédito XXXVI
Debt Instrument [Line Items]
Effective interest rate	50.00%
Diario Oficial \| Fideicomiso de administración y fuente de pago CIB/3756
Debt Instrument [Line Items]
Collateralized debt	$ 205
Effective interest rate	2.35%
Diario Oficial \| Fideicomiso de administración y fuente de pago CIB/3369
Debt Instrument [Line Items]
Collateralized debt	$ 30
Effective interest rate	7.00%
Diario Oficial \| Fideicomiso Irrevocable de Administración y Fuente de Pago número CIB/4372
Debt Instrument [Line Items]
Effective interest rate	2.50%
Diario Oficial \| Frontal Trust Mercado Pago Créditos Fondo de Inversión
Debt Instrument [Line Items]
Effective interest rate	2.10%
Diario Oficial \| Frontal Trust Mercado Pago Créditos Fondo de Inversión
Debt Instrument [Line Items]
Effective interest rate	3.90%
Diario Oficial \| Frontal Trust Mercado Pago Créditos Fondo de Inversión
Debt Instrument [Line Items]
Effective interest rate	4.25%