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Equity (Details) - Schedule of Shareholder Composition - shares | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
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Schedule of Shareholder Composition [Line Items] |  |  |
Shares | 177,823,688,723 | 175,646,161,923 | 168,600,275,923
American Depository Receipts (ADRs) | 10,622,438,071 | 12,799,964,871 | 19,845,850,871
Shares outstanding (in shares) | 188,446,126,794 | 188,446,126,794 | 188,446,126,794
Percentage of equity holding | 100.00% | 100.00% | 100.00%
Santander Chile Holding S.A. |  |  |
Schedule of Shareholder Composition [Line Items] |  |  |
Shares | 66,822,519,695 | 66,822,519,695 | 66,822,519,695
American Depository Receipts (ADRs) | 0 | 0 | 0
Shares outstanding (in shares) | 66,822,519,695 | 66,822,519,695 | 66,822,519,695
Percentage of equity holding | 35.46% | 35.46% | 35.46%
Teatinos Siglo XXI Inversiones S.A. |  |  |
Schedule of Shareholder Composition [Line Items] |  |  |
Shares | 59,770,481,573 | 59,770,481,573 | 59,770,481,573
American Depository Receipts (ADRs) | 0 | 0 | 0
Shares outstanding (in shares) | 59,770,481,573 | 59,770,481,573 | 59,770,481,573
Percentage of equity holding | 31.72% | 31.72% | 31.72%
The Bank of New York Mellon |  |  |
Schedule of Shareholder Composition [Line Items] |  |  |
Shares |  | 0 | 0
American Depository Receipts (ADRs) | 10,622,438,071 | 12,799,964,871 | 19,845,850,871
Shares outstanding (in shares) | 10,622,438,071 | 12,799,964,871 | 19,845,850,871
Percentage of equity holding | 5.64% | 6.79% | 10.53%
Banks on behalf of third parties |  |  |
Schedule of Shareholder Composition [Line Items] |  |  |
Shares | 16,842,708,565 | 19,416,795,808 | 16,841,385,216
American Depository Receipts (ADRs) | 0 | 0 | 0
Shares outstanding (in shares) | 16,842,708,565 | 19,416,795,808 | 16,841,385,216
Percentage of equity holding | 8.94% | 10.30% | 8.94%
Pension funds (AFP) on behalf of third parties |  |  |
Schedule of Shareholder Composition [Line Items] |  |  |
Shares | 20,794,099,878 | 18,392,349,767 | 13,742,809,166
American Depository Receipts (ADRs) | 0 | 0 | 0
Shares outstanding (in shares) | 20,794,099,878 | 18,392,349,767 | 13,742,809,166
Percentage of equity holding | 11.03% | 9.76% | 7.29%
Stock brokers on behalf of third parties |  |  |
Schedule of Shareholder Composition [Line Items] |  |  |
Shares | 5,276,952,871 | 5,029,151,233 | 6,122,497,451
American Depository Receipts (ADRs) | 0 | 0 | 0
Shares outstanding (in shares) | 5,276,952,871 | 5,029,151,233 | 6,122,497,451
Percentage of equity holding | 2.80% | 2.67% | 3.25%
Other minority holders |  |  |
Schedule of Shareholder Composition [Line Items] |  |  |
Shares | 8,316,926,141 | 6,214,863,847 | 5,300,582,822
American Depository Receipts (ADRs) | 0 | 0 | 0
Shares outstanding (in shares) | 8,316,926,141 | 6,214,863,847 | 5,300,582,822
Percentage of equity holding | 4.41% | 3.30% | 2.81%

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