v3.26.1
SECURITIZATION TRANSACTIONS - Schedule of Collateralized Debt (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
May 31, 2026
Jun. 30, 2026
Jun. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]        
Collateralized debt   $ 3,587 $ 3,587 $ 2,852
Mercado Crédito I Brasil Fundo de Investimento Em Direitos Creditórios Não Padronizados        
Debt Instrument [Line Items]        
Collateralized debt   $ 99 99  
Basis spread on variable rate (in percent) 3.00% 2.50%    
Mercado Crédito I Brasil Fundo de Investimento Em Direitos Creditórios Não Padronizados        
Debt Instrument [Line Items]        
Collateralized debt   $ 19 19  
Mercado Crédito Fundo de Investimento Em Direitos Creditórios Não Padronizado        
Debt Instrument [Line Items]        
Collateralized debt   $ 177 177  
Basis spread on variable rate (in percent) 2.80% 2.55%    
Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados        
Debt Instrument [Line Items]        
Collateralized debt   $ 233 233  
Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados        
Debt Instrument [Line Items]        
Collateralized debt   61 61  
Mercado Crédito Estruturado Fundo De Investimento Em Direitos Creditórios        
Debt Instrument [Line Items]        
Collateralized debt   11 11  
Seller Fundo De Investimento Em Direitos Creditórios        
Debt Instrument [Line Items]        
Collateralized debt   29 29  
Seller Fundo De Investimento Em Direitos Creditórios        
Debt Instrument [Line Items]        
Collateralized debt   20 20  
Seller Fundo De Investimento Em Direitos Creditórios        
Debt Instrument [Line Items]        
Collateralized debt   295 295  
Seller II Fundo De Investimento Em Direitos Creditórios Segmento Meios De Pagamento De Resp Ltda        
Debt Instrument [Line Items]        
Collateralized debt   194 194  
Seller III Fundo De Investimento Em Direitos Creditórios Segmento Meios De Pagamento De Resp Ltda        
Debt Instrument [Line Items]        
Collateralized debt   305 305  
Mercado Crédito XXXVIII        
Debt Instrument [Line Items]        
Collateralized debt   2 2  
Mercado Crédito XXXIX        
Debt Instrument [Line Items]        
Collateralized debt   13 13  
Mercado Crédito XL        
Debt Instrument [Line Items]        
Collateralized debt   10 10  
Mercado Crédito XLI        
Debt Instrument [Line Items]        
Collateralized debt   9 9  
Mercado Crédito XLII        
Debt Instrument [Line Items]        
Collateralized debt   23 23  
Mercado Crédito XLIII        
Debt Instrument [Line Items]        
Collateralized debt   59 59  
Mercado Crédito XLIV        
Debt Instrument [Line Items]        
Collateralized debt   59 59  
Mercado Crédito XLV        
Debt Instrument [Line Items]        
Collateralized debt   60 60  
Mercado Crédito XLVI        
Debt Instrument [Line Items]        
Collateralized debt   61 61  
Mercado Crédito XLVII        
Debt Instrument [Line Items]        
Collateralized debt   60 60  
Mercado Crédito XLVIII        
Debt Instrument [Line Items]        
Collateralized debt   66 66  
Mercado Crédito XLIX        
Debt Instrument [Line Items]        
Collateralized debt   71 71  
Mercado Crédito L        
Debt Instrument [Line Items]        
Collateralized debt   76 76  
Mercado Crédito LI        
Debt Instrument [Line Items]        
Collateralized debt   81 81  
Fideicomiso Irrevocable de Administración y Fuente de Pago F/6203        
Debt Instrument [Line Items]        
Collateralized debt   296 296  
Fideicomiso Irrevocable de Administración y Fuente de Pago 6189        
Debt Instrument [Line Items]        
Collateralized debt   220 220  
Fideicomiso Irrevocable de Administración y Fuente de Pago Número F/6279        
Debt Instrument [Line Items]        
Collateralized debt   259 259  
Fideicomiso Irrevocable de Administración y Fuente de Pago F/6191        
Debt Instrument [Line Items]        
Collateralized debt   675 675  
Frontal Trust Mercado Pago Créditos Fondo de Inversión        
Debt Instrument [Line Items]        
Collateralized debt   22 22  
Frontal Trust Mercado Pago Créditos Fondo de Inversión        
Debt Instrument [Line Items]        
Collateralized debt   4 4  
Frontal Trust Mercado Pago Créditos Fondo de Inversión        
Debt Instrument [Line Items]        
Collateralized debt   $ 18 $ 18  
CDI | Mercado Crédito I Brasil Fundo de Investimento Em Direitos Creditórios Não Padronizados        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     2.25%  
CDI | Mercado Crédito I Brasil Fundo de Investimento Em Direitos Creditórios Não Padronizados        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     5.25%  
CDI | Mercado Crédito Fundo de Investimento Em Direitos Creditórios Não Padronizado        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     2.50%  
CDI | Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.75%  
CDI | Mercado Crédito II Brasil Fundo De Investimento Em Direitos Creditórios Nao Padronizados        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     5.25%  
CDI | Mercado Crédito Estruturado Fundo De Investimento Em Direitos Creditórios        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     4.50%  
CDI | Seller Fundo De Investimento Em Direitos Creditórios        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.40%  
CDI | Seller Fundo De Investimento Em Direitos Creditórios        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.60%  
CDI | Seller Fundo De Investimento Em Direitos Creditórios        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     0.85%  
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 (in percent)     0.85%  
CDI | Seller III Fundo De Investimento Em Direitos Creditórios Segmento Meios De Pagamento De Resp Ltda        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     0.65%  
TAMAR Rate | Mercado Crédito XXXVIII        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito XXXIX        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito XL        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito XLI        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito XLII        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito XLIII        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito XLIV        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito XLVI        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito XLVII        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito XLVIII        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito XLIX        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito L        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Mercado Crédito LI        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
TAMAR Rate | Minimum | Mercado Crédito XXXVIII        
Debt Instrument [Line Items]        
Effective interest rate   15.00% 15.00%  
TAMAR Rate | Minimum | Mercado Crédito XXXIX        
Debt Instrument [Line Items]        
Effective interest rate   25.00% 25.00%  
TAMAR Rate | Minimum | Mercado Crédito XL        
Debt Instrument [Line Items]        
Effective interest rate   20.00% 20.00%  
TAMAR Rate | Minimum | Mercado Crédito XLI        
Debt Instrument [Line Items]        
Effective interest rate   20.00% 20.00%  
TAMAR Rate | Minimum | Mercado Crédito XLII        
Debt Instrument [Line Items]        
Effective interest rate   20.00% 20.00%  
TAMAR Rate | Minimum | Mercado Crédito XLIII        
Debt Instrument [Line Items]        
Effective interest rate   20.00% 20.00%  
TAMAR Rate | Minimum | Mercado Crédito XLIV        
Debt Instrument [Line Items]        
Effective interest rate   17.00% 17.00%  
TAMAR Rate | Minimum | Mercado Crédito XLV        
Debt Instrument [Line Items]        
Effective interest rate   17.00% 17.00%  
TAMAR Rate | Minimum | Mercado Crédito XLVI        
Debt Instrument [Line Items]        
Effective interest rate   17.00% 17.00%  
TAMAR Rate | Minimum | Mercado Crédito XLVII        
Debt Instrument [Line Items]        
Effective interest rate   17.00% 17.00%  
TAMAR Rate | Minimum | Mercado Crédito XLVIII        
Debt Instrument [Line Items]        
Effective interest rate   17.00% 17.00%  
TAMAR Rate | Minimum | Mercado Crédito XLIX        
Debt Instrument [Line Items]        
Effective interest rate   17.00% 17.00%  
TAMAR Rate | Minimum | Mercado Crédito L        
Debt Instrument [Line Items]        
Effective interest rate   17.00% 17.00%  
TAMAR Rate | Minimum | Mercado Crédito LI        
Debt Instrument [Line Items]        
Effective interest rate   15.00% 15.00%  
TAMAR Rate | Maximum | Mercado Crédito XXXVIII        
Debt Instrument [Line Items]        
Effective interest rate   50.00% 50.00%  
TAMAR Rate | Maximum | Mercado Crédito XXXIX        
Debt Instrument [Line Items]        
Effective interest rate   50.00% 50.00%  
TAMAR Rate | Maximum | Mercado Crédito XL        
Debt Instrument [Line Items]        
Effective interest rate   75.00% 75.00%  
TAMAR Rate | Maximum | Mercado Crédito XLI        
Debt Instrument [Line Items]        
Effective interest rate   75.00% 75.00%  
TAMAR Rate | Maximum | Mercado Crédito XLII        
Debt Instrument [Line Items]        
Effective interest rate   75.00% 75.00%  
TAMAR Rate | Maximum | Mercado Crédito XLIII        
Debt Instrument [Line Items]        
Effective interest rate   75.00% 75.00%  
TAMAR Rate | Maximum | Mercado Crédito XLIV        
Debt Instrument [Line Items]        
Effective interest rate   55.00% 55.00%  
TAMAR Rate | Maximum | Mercado Crédito XLV        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     1.00%  
Effective interest rate   55.00% 55.00%  
TAMAR Rate | Maximum | Mercado Crédito XLVI        
Debt Instrument [Line Items]        
Effective interest rate   50.00% 50.00%  
TAMAR Rate | Maximum | Mercado Crédito XLVII        
Debt Instrument [Line Items]        
Effective interest rate   50.00% 50.00%  
TAMAR Rate | Maximum | Mercado Crédito XLVIII        
Debt Instrument [Line Items]        
Effective interest rate   50.00% 50.00%  
TAMAR Rate | Maximum | Mercado Crédito XLIX        
Debt Instrument [Line Items]        
Effective interest rate   50.00% 50.00%  
TAMAR Rate | Maximum | Mercado Crédito L        
Debt Instrument [Line Items]        
Effective interest rate   45.00% 45.00%  
TAMAR Rate | Maximum | Mercado Crédito LI        
Debt Instrument [Line Items]        
Effective interest rate   45.00% 45.00%  
Diario Oficial | Fideicomiso Irrevocable de Administración y Fuente de Pago F/6203        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     2.20%  
Diario Oficial | Fideicomiso Irrevocable de Administración y Fuente de Pago 6189        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     2.55%  
Diario Oficial | Fideicomiso Irrevocable de Administración y Fuente de Pago Número F/6279        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     2.50%  
Diario Oficial | Fideicomiso Irrevocable de Administración y Fuente de Pago F/6191        
Debt Instrument [Line Items]        
Basis spread on variable rate (in percent)     2.20%  
TAB 30 | Frontal Trust Mercado Pago Créditos Fondo de Inversión        
Debt Instrument [Line Items]        
Effective interest rate   2.10% 2.10%  
TAB 30 | Frontal Trust Mercado Pago Créditos Fondo de Inversión        
Debt Instrument [Line Items]        
Effective interest rate   3.90% 3.90%  
TAB 30 | Frontal Trust Mercado Pago Créditos Fondo de Inversión        
Debt Instrument [Line Items]        
Effective interest rate   4.25% 4.25%