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Equity (Details) - Schedule of shareholder composition - shares
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
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.