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Financial Liabilities at Amortised Cost (Details) - Schedule of Senior Bonds by Currency - CLP ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Schedule of Senior Bonds by Currency [Line Items]    
Issued debt instruments $ 8,133,275 $ 8,001,045
Senior bonds    
Schedule of Senior Bonds by Currency [Line Items]    
Issued debt instruments 8,067,274 7,925,385
Senior bonds | Santander bonds in UF    
Schedule of Senior Bonds by Currency [Line Items]    
Issued debt instruments 3,830,030 3,632,979
Senior bonds | Santander bonds in USD    
Schedule of Senior Bonds by Currency [Line Items]    
Issued debt instruments 1,971,887 2,424,045
Senior bonds | CHF    
Schedule of Senior Bonds by Currency [Line Items]    
Issued debt instruments 866,942 637,203
Senior bonds | Santander bonds in Ch$    
Schedule of Senior Bonds by Currency [Line Items]    
Issued debt instruments 827,738 619,386
Senior bonds | Santander bonds in AUD    
Schedule of Senior Bonds by Currency [Line Items]    
Issued debt instruments 93,244 116,515
Senior bonds | Current bonds in JPY    
Schedule of Senior Bonds by Currency [Line Items]    
Issued debt instruments 296,831 323,922
Senior bonds | Santander bonds in EUR    
Schedule of Senior Bonds by Currency [Line Items]    
Issued debt instruments $ 180,602 $ 171,335