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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2024
Summary of Significant Accounting Policies [Abstract] |
Schedule of Subsidiaries | Entities controlled by the Bank through participation in equity
|  |  |  |  |  | Percent ownership share |
|  |  |  |  |  | As of December 31, |
Name of the Subsidiary |  | Main Activity |  | Place of incorporation and operation |  | 2024 |  | 2023 |  | 2022 |
|  |  | Direct |  | Indirect |  | Total |  | Direct |  | Indirect |  | Total |  | Direct |  | Indirect |  | Total |
|  |  | % |  | % |  | % |  | % |  | % |  | % |  | % |  | % |  | % |
Santander Corredora de Seguros Limitada |  | Insurance brokerage |  | Santiago, Chile |  | 99.75 |  |  | 0.01 |  |  | 99.76 |  |  | 99.75 |  |  | 0.01 |  |  | 99.76 |  |  | 99.75 |  |  | 0.01 |  |  | 99.76 |  |
Santander Corredores de Bolsa Limitada |  | Financial instruments brokerage |  | Santiago, Chile |  | 50.59 |  |  | 0.41 |  |  | 51.00 |  |  | 50.59 |  |  | 0.41 |  |  | 51.00 |  |  | 50.59 |  |  | 0.41 |  |  | 51.00 |  |
Santander Asesorias Financieras Limitada |  | Securities brokerage |  | Santiago, Chile |  | 99.03 |  |  | - |  |  | 99.03 |  |  | 99.03 |  |  | - |  |  | 99.03 |  |  | 99.03 |  |  | - |  |  | 99.03 |  |
Santander S.A. Sociedad Securitizadora |  | Purchase of credits and issuance of debt instruments |  | Santiago, Chile |  | 99.64 |  |  | - |  |  | 99.64 |  |  | 99.64 |  |  | - |  |  | 99.64 |  |  | 99.64 |  |  | - |  |  | 99.64 |  |
Klare Corredora de Seguros S.A. |  | Insurance brokerage |  | Santiago, Chile |  | - |  |  | - |  |  | - |  |  | 50.10 |  |  | - |  |  | 50.10 |  |  | 50.10 |  |  | - |  |  | 50.10 |  |
Santander Consumer Chile S.A. |  | Financing |  | Santiago, Chile |  | 51.00 |  |  | - |  |  | 51.00 |  |  | 51.00 |  |  | - |  |  | 51.00 |  |  | 51.00 |  |  | - |  |  | 51.00 |  |
Sociedad operadora de Tarjetas de Pago Santander Getnet Chile S.A. (1) |  | Card operator |  | Santiago, Chile |  | 99.99 |  |  | 0.01 |  |  | 100.00 |  |  | 99.99 |  |  | 0.01 |  |  | 100.00 |  |  | 99.99 |  |  | 0.01 |  |  | 100.00 |  |
Schedule of Associates | The following companies are considered “Associates” in which the Bank accounts for its participation using the equity method:
|  |  |  |  |  | Percentage of ownership share |
Associates |  | Main activity |  | Place of incorporation and operations |  | As of December 31, |
|  |  | 2024 |  | 2023 |  | 2022 |
|  |  | % |  | % |  | % |
Redbanc S.A. |  | ATM services |  | Santiago, Chile |  | 33.43 |  |  | 33.43 |  |  | 33.43 |  |
Transbank S.A. |  | Debit and credit card services |  | Santiago, Chile |  | 25.00 |  |  | 25.00 |  |  | 25.00 |  |
Centro de Compensación Automatizado S.A. |  | Electronic fund transfer and compensation services |  | Santiago, Chile |  | 33.33 |  |  | 33.33 |  |  | 33.33 |  |
Sociedad Interbancaria de Depósito de Valores S.A. |  | Delivery of securities on public offer |  | Santiago, Chile |  | 29.29 |  |  | 29.29 |  |  | 29.29 |  |
Cámara Compensación de Pagos de Alto Valor S.A. |  | Payments clearing |  | Santiago, Chile |  | 13.72 |  |  | 15.00 |  |  | 15.00 |  |
Administrador Financiero del Transantiago S.A. |  | Administration of boarding passes for public transportation |  | Santiago, Chile |  | 20.00 |  |  | 20.00 |  |  | 20.00 |  |
Servicios de Infraestructura de Mercado OTC S.A. |  | Administration of the infrastructure for the financial market of derivative instruments |  | Santiago, Chile |  | 12.48 |  |  | 12.48 |  |  | 12.48 |  |
Schedule of Useful Lives for Tangible Assets | The Bank applies the following useful lives for the tangible assets that comprise its assets:
ITEM |  | Useful life (Months) |
Land |  | – |  |
Paintings and works of art |  | – |  |
Carpets and curtains |  | 36 months |
Computers and hardware |  | 36 months |
Vehicles |  | 36 months |
IT systems and software |  | 36 months |
ATMs |  | 60 months |
Other machines and equipment |  | 60 months |
Office furniture |  | 60 months |
Telephone and communication systems |  | 60 months |
Security systems |  | 60 months |
Rights over telephone lines |  | 64 months |
Air conditioning systems |  | 84 months |
Other installations |  | 120 months |
Buildings |  | 1200 months |
As of December 31, 2024 and 2023, the composition of property, plant, and equipment balances is as follows:
|  |  | As of December 31, 2024
| Net opening balance as of January 1, 2024 |  | Gross balance |  | Accumulated depreciation |  | Net balance |
| MCh$ |  | MCh$ |  | MCh$ |  | MCh$ |
Buildings | 145,618 |  |  | 327,607 |  |  | (185,493) |  |  | 142,114 |  |
Land | 14,631 |  |  | 14,020 |  |  | - |  |  | 14,020 |  |
Equipment | 67,751 |  |  | 371,128 |  |  | (299,973) |  |  | 71,155 |  |
Other | 23,823 |  |  | 100,972 |  |  | (76,415) |  |  | 24,557 |  |
Total | 251,823 |  |  | 813,727 |  |  | (561,881) |  |  | 251,846 |  |
|  |  | As of December 31, 2023
| Net opening balance as of January 1, 2023 |  | Gross balance |  | Accumulated depreciation |  | Net balance |
| MCh$ |  | MCh$ |  | MCh$ |  | MCh$ |
Buildings | 145,800 |  |  | 318,881 |  |  | (173,263) |  |  | 145,618 |  |
Land | 15,021 |  |  | 14,631 |  |  | - |  |  | 14,631 |  |
Equipment | 48,278 |  |  | 343,038 |  |  | (275,287) |  |  | 67,751 |  |
Other | 28,996 |  |  | 99,732 |  |  | (75,909) |  |  | 23,823 |  |
Total | 238,095 |  |  | 776,282 |  |  | (524,459) |  |  | 251,823 |  |
Schedule of Loan and Accounts Receivable Write-Offs | Loan and accounts receivable write-offs are recorded for overdue and current installments based on the time periods expired since reaching overdue status, as described below:
Type of loan |  | Term |
Consumer loans with or without collateral |  | 6 months |
Other transactions without collateral |  | 24 months |
Commercial loans with collateral |  | 36 months |
Mortgage loans |  | 48 months |
Consumer leasing |  | 6 months |
Other non-mortgage leasing transactions |  | 12 months |
Mortgage leasing (household and business) |  | 36 months |

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