v3.25.4
Summary of Significant Accounting Policies (Details) - Schedule of Subsidiaries
12 Months Ended
Feb. 02, 2026
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Santander Corredora de Seguros Limitada        
Schedule of Subsidiaries [Line Items]        
Direct   99.75% 99.75% 99.75%
Indirect   0.01% 0.01% 0.01%
Total   99.76% 99.76% 99.76%
Santander Corredores de Bolsa Limitada        
Schedule of Subsidiaries [Line Items]        
Direct   50.59% 50.59% 50.59%
Indirect   0.41% 0.41% 0.41%
Total   51.00% 51.00% 51.00%
Santander Asesorias Financieras Limitada        
Schedule of Subsidiaries [Line Items]        
Direct   99.03% 99.03% 99.03%
Indirect   0.00% 0.00% 0.00%
Total   99.03% 99.03% 99.03%
Santander S.A. Sociedad Securitizadora        
Schedule of Subsidiaries [Line Items]        
Direct   99.64% 99.64% 99.64%
Indirect   0.00% 0.00% 0.00%
Total   99.64% 99.64% 99.64%
Klare Corredora de Seguros S.A.        
Schedule of Subsidiaries [Line Items]        
Direct   0.00% 0.00% 50.10%
Indirect   0.00% 0.00% 0.00%
Total   0.00% 0.00% 50.10%
Santander Consumer Chile S.A.        
Schedule of Subsidiaries [Line Items]        
Direct   51.00% 51.00% 51.00%
Indirect   0.00% 0.00% 0.00%
Total   51.00% 51.00% 51.00%
Sociedad operadora de Tarjetas de Pago Santander Getnet Chile S.A.        
Schedule of Subsidiaries [Line Items]        
Direct 50.01% 99.99% 99.99% 99.99%
Indirect   0.01% 0.01% 0.01%
Total   100.00% 100.00% 100.00%