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Contingencies and Commitments (Details) - CLP ($)
shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Contingencies and Commitments (Details) [Line Items]    
Estimated financial effect of contingent liabilities $ 1,081,895 $ 1,307,692
Integral bank policy of coverage of Official Loyalty Banco Santander-Chile has an integral bank policy of coverage of Official Loyalty N°5721202 in force with the company Compañía de Seguros Chilena Consolidada S.A., coverage for USD50,000,000 per claim with an annual limit of USD100,000,000, which covers both the Bank and its subsidiaries, with an expiration date of June 30, 2023.   
Banchile Corredores De Bolsa S.a [Member]    
Contingencies and Commitments (Details) [Line Items]    
Bank and provisions 5,533 3,035