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Summary of Significant Accounting Policies (Details) | 12 Months Ended
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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% |  |

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