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Equity (Details) - Schedule of shareholder composition - shares | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Equity (Details) - Schedule of shareholder composition [Line Items] |  |  |  |
Shares |  | 167,735,787,923 | 165,995,455,123 | 163,624,085,523
American Depository Receipts (ADRs) | [1] | 20,710,338,871 | 22,450,671,671 | 24,822,041,271
Total |  | 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. [Member] |  |  |  |
Equity (Details) - Schedule of shareholder composition [Line Items] |  |  |  |
Shares |  | 66,822,519,695 | 66,822,519,695 | 66,822,519,695
American Depository Receipts (ADRs) | [1] |  |  |
Total |  | 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 Limitada [Member] |  |  |  |
Equity (Details) - Schedule of shareholder composition [Line Items] |  |  |  |
Shares |  | 59,770,481,573 | 59,770,481,573 | 59,770,481,573
American Depository Receipts (ADRs) | [1] |  |  |
Total |  | 59,770,481,573 | 59,770,481,573 | 59,770,481,573
Percentage of equity holding |  | 31.72% | 31.72% | 31.72%
The Bank New York Mellon [Member] |  |  |  |
Equity (Details) - Schedule of shareholder composition [Line Items] |  |  |  |
Shares |  |  |  |
American Depository Receipts (ADRs) | [1] | 20,710,338,871 | 22,450,671,671 | 24,822,041,271
Total |  | 20,710,338,871 | 22,450,671,671 | 24,822,041,271
Percentage of equity holding |  | 10.99% | 11.91% | 13.17%
Banks On Behalf Of Third Parties [Member] |  |  |  |
Equity (Details) - Schedule of shareholder composition [Line Items] |  |  |  |
Shares |  | 17,318,500,798 | 15,925,407,468 | 15,957,137,883
American Depository Receipts (ADRs) | [1] |  |  |
Total |  | 17,318,500,798 | 15,925,407,468 | 15,957,137,883
Percentage of equity holding |  | 9.19% | 8.45% | 8.47%
Pension Funds (AFP) On Behalf Of Third Parties [Member] |  |  |  |
Equity (Details) - Schedule of shareholder composition [Line Items] |  |  |  |
Shares |  | 11,949,134,854 | 9,929,343,874 | 9,995,705,956
American Depository Receipts (ADRs) | [1] |  |  |
Total |  | 11,949,134,854 | 9,929,343,874 | 9,995,705,956
Percentage of equity holding |  | 6.34% | 5.27% | 5.30%
Stock Brokers On Behalf Of Third Parties [Member] |  |  |  |
Equity (Details) - Schedule of shareholder composition [Line Items] |  |  |  |
Shares |  | 5,870,596,720 | 6,892,162,980 | 5,551,024,270
American Depository Receipts (ADRs) | [1] |  |  |
Total |  | 5,870,596,720 | 6,892,162,980 | 5,551,024,270
Percentage of equity holding |  | 3.12% | 3.66% | 2.95%
Other Minority Holders [Member] |  |  |  |
Equity (Details) - Schedule of shareholder composition [Line Items] |  |  |  |
Shares |  | 6,004,554,283 | 6,655,539,533 | 5,527,216,146
American Depository Receipts (ADRs) | [1] |  |  |
Total |  | 6,004,554,283 | 6,655,539,533 | 5,527,216,146
Percentage of equity holding |  | 3.18% | 3.53% | 2.93%
[1] | American Depository Receipts (ADR) are certificates issued by a U.S. commercial bank to be traded on the U.S. securities markets.

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