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Summary of Significant Accounting Policies (Details)
 12 Months Ended
Dec. 31, 2023
CLP ($)
Dec. 31, 2022
CLP ($)
Dec. 31, 2022
USD ($)
Summary of Significant Accounting Policies [Line Items]      
Revenue of operating segments, percentage 10.00%    
Profit or loss, percentage 10.00%    
Percentage of combined assets operating segments 10.00%    
Foreign exchange rate $ 87,445 $ 849.59 $ 1
Average incremental interest rate 1.44%    
ECL allowance amount (in Pesos)   $ 3,341  
PD equal percentage 100.00%    
Average cost to sale, percentage 5.67% 5.80% 5.80%
Net income, percentage 30.00%    
Terms of employee benefits 60 years    
Expected Credit Losses [Member]      
Summary of Significant Accounting Policies [Line Items]      
PD equal percentage 100.00%    
Top of range [Member]      
Summary of Significant Accounting Policies [Line Items]      
Percentage of inflation 4.70%    
Bottom of range [Member]      
Summary of Significant Accounting Policies [Line Items]      
Percentage of inflation   13.30% 13.30%
CLF [Member]      
Summary of Significant Accounting Policies [Line Items]      
Foreign exchange rate 36,789.36 35,110.98 35,110.98
Banco Santander Spain [Member] | Banco Santander-Chile [Member]      
Summary of Significant Accounting Policies [Line Items]      
Proportion of ownership interest in subsidiary 99.80%    
Banco Santander Spain [Member] | Teatinos Siglo XXi inversiones Ltda [Member]      
Summary of Significant Accounting Policies [Line Items]      
Proportion of ownership interest in subsidiary 100.00%    
Banco Santander Spain [Member] | Santander-Chile Bank [Member]      
Summary of Significant Accounting Policies [Line Items]      
Proportion of ownership interest in subsidiary 67.18%