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SECURITIZATION TRANSACTIONS - Summary of Collateralized Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Securitization Transactions [Line Items]
Collateralized debt	$ 1,842	$ 1,475
Mercado Crédito I Brasil Fundo de Investimento Em Direitos Creditórios Não Padronizados
Securitization Transactions [Line Items]
Collateralized debt	$ 178
Mercado Crédito I Brasil Fundo de Investimento Em Direitos Creditórios Não Padronizados | CDI
Securitization Transactions [Line Items]
Basis spread on variable rate	2.50%
Mercado Crédito Fundo de Investimento Em Direitos Creditórios Não Padronizado
Securitization Transactions [Line Items]
Collateralized debt	$ 16
Mercado Crédito Fundo de Investimento Em Direitos Creditórios Não Padronizado | CDI
Securitization Transactions [Line Items]
Basis spread on variable rate	3.50%
Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados
Securitization Transactions [Line Items]
Collateralized debt	$ 193
Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados | CDI
Securitization Transactions [Line Items]
Basis spread on variable rate	2.35%
Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados
Securitization Transactions [Line Items]
Collateralized debt	$ 65
Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados | CDI
Securitization Transactions [Line Items]
Basis spread on variable rate	5.25%
Seller Fundo De Investimento Em Direitos Creditórios
Securitization Transactions [Line Items]
Collateralized debt	$ 164
Seller Fundo De Investimento Em Direitos Creditórios | CDI
Securitization Transactions [Line Items]
Basis spread on variable rate	1.60%
Seller Fundo De Investimento Em Direitos Creditórios
Securitization Transactions [Line Items]
Collateralized debt	$ 82
Seller Fundo De Investimento Em Direitos Creditórios | CDI
Securitization Transactions [Line Items]
Basis spread on variable rate	1.80%
Seller Fundo De Investimento Em Direitos Creditórios
Securitization Transactions [Line Items]
Collateralized debt	$ 33
Seller Fundo De Investimento Em Direitos Creditórios | CDI
Securitization Transactions [Line Items]
Basis spread on variable rate	1.40%
Seller Fundo De Investimento Em Direitos Creditórios
Securitization Transactions [Line Items]
Collateralized debt	$ 16
Seller Fundo De Investimento Em Direitos Creditórios | CDI
Securitization Transactions [Line Items]
Basis spread on variable rate	1.60%
Seller II Fundo De Investimento Em Direitos Creditórios Segmento Meios De Pagamento De Rsponsabilidade Limitada
Securitization Transactions [Line Items]
Collateralized debt	$ 162
Seller II Fundo De Investimento Em Direitos Creditórios Segmento Meios De Pagamento De Rsponsabilidade Limitada | CDI
Securitization Transactions [Line Items]
Basis spread on variable rate	0.85%
Mercado Crédito Consumo XXXII
Securitization Transactions [Line Items]
Collateralized debt	$ 10
Mercado Crédito Consumo XXXII | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito Consumo XXXII | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	25.00%
Mercado Crédito Consumo XXXII | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	80.00%
Mercado Crédito Consumo XXXIII
Securitization Transactions [Line Items]
Collateralized debt	$ 23
Mercado Crédito Consumo XXXIII | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito Consumo XXXIII | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	5.00%
Mercado Crédito Consumo XXXIII | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Mercado Crédito Consumo XXXIV
Securitization Transactions [Line Items]
Collateralized debt	$ 20
Mercado Crédito Consumo XXXIV | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito Consumo XXXIV | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito Consumo XXXIV | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Mercado Crédito Consumo XXXV
Securitization Transactions [Line Items]
Collateralized debt	$ 22
Mercado Crédito Consumo XXXV | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito Consumo XXXV | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito Consumo XXXV | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Mercado Crédito XXI
Securitization Transactions [Line Items]
Collateralized debt	$ 1
Mercado Crédito XXI | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito XXI | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	45.00%
Mercado Crédito XXI | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	125.00%
Mercado Crédito XXII
Securitization Transactions [Line Items]
Collateralized debt	$ 4
Mercado Crédito XXII | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito XXII | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito XXII | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	70.00%
Mercado Crédito XXIII
Securitization Transactions [Line Items]
Collateralized debt	$ 14
Mercado Crédito XXIII | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito XXIII | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito XXIII | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Mercado Crédito XXIV
Securitization Transactions [Line Items]
Collateralized debt	$ 13
Mercado Crédito XXIV | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito XXIV | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito XXIV | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Mercado Crédito XXV
Securitization Transactions [Line Items]
Collateralized debt	$ 29
Mercado Crédito XXV | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito XXV | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito XXV | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Mercado Crédito XXVI
Securitization Transactions [Line Items]
Collateralized debt	$ 34
Mercado Crédito XXVI | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito XXVI | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito XXVI | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Mercado Crédito XXVII
Securitization Transactions [Line Items]
Collateralized debt	$ 31
Mercado Crédito XXVII | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito XXVII | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito XXVII | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Mercado Crédito XXVIII
Securitization Transactions [Line Items]
Collateralized debt	$ 30
Mercado Crédito XXVIII | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito XXVIII | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito XXVIII | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Mercado Crédito XXIX
Securitization Transactions [Line Items]
Collateralized debt	$ 32
Mercado Crédito XXIX | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito XXIX | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito XXIX | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Mercado Crédito XXX
Securitization Transactions [Line Items]
Collateralized debt	$ 38
Mercado Crédito XXX | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito XXX | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito XXX | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Mercado Crédito XXXI
Securitization Transactions [Line Items]
Collateralized debt	$ 43
Mercado Crédito XXXI | BADLAR Rate
Securitization Transactions [Line Items]
Basis spread on variable rate	2.00%
Mercado Crédito XXXI | BADLAR Rate | Minimum
Securitization Transactions [Line Items]
Effective interest rate	15.00%
Mercado Crédito XXXI | BADLAR Rate | Maximum
Securitization Transactions [Line Items]
Effective interest rate	60.00%
Fideicomiso de administración y fuente de pago CIB/3756
Securitization Transactions [Line Items]
Collateralized debt	$ 202
Fideicomiso de administración y fuente de pago CIB/3756 | Diario Oficial
Securitization Transactions [Line Items]
Effective interest rate	2.35%
Fideicomiso de administración y fuente de pago CIB/3369
Securitization Transactions [Line Items]
Collateralized debt	$ 29
Fideicomiso de administración y fuente de pago CIB/3369 | Diario Oficial
Securitization Transactions [Line Items]
Effective interest rate	7.00%
Fideicomiso de administración y fuente de pago CIB/3369
Securitization Transactions [Line Items]
Collateralized debt	$ 219
Fideicomiso de administración y fuente de pago CIB/3369 | Diario Oficial
Securitization Transactions [Line Items]
Effective interest rate	2.80%
Fideicomiso Irrevocable de Administración y Fuente de Pago número CIB/4372
Securitization Transactions [Line Items]
Collateralized debt	$ 129
Fideicomiso Irrevocable de Administración y Fuente de Pago número CIB/4372 | Diario Oficial
Securitization Transactions [Line Items]
Effective interest rate	2.50%
Frontal Trust Mercado Pago Créditos Fondo de Inversión
Securitization Transactions [Line Items]
Collateralized debt	$ 5
Frontal Trust Mercado Pago Créditos Fondo de Inversión | TAB 30
Securitization Transactions [Line Items]
Effective interest rate	2.10%
Frontal Trust Mercado Pago Créditos Fondo de Inversión
Securitization Transactions [Line Items]
Collateralized debt	$ 1
Frontal Trust Mercado Pago Créditos Fondo de Inversión | TAB 30
Securitization Transactions [Line Items]
Effective interest rate	3.90%
Frontal Trust Mercado Pago Créditos Fondo de Inversión
Securitization Transactions [Line Items]
Collateralized debt	$ 4
Frontal Trust Mercado Pago Créditos Fondo de Inversión | TAB 30
Securitization Transactions [Line Items]
Effective interest rate	4.25%

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