v3.25.4
Equity (Details) - Schedule of Shareholder Composition - shares
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Schedule of Shareholder Composition [Line Items]      
Shares (in shares) 178,465,904,723 177,823,688,723 175,646,161,923
American Depository Receipts (ADRs) (in shares) 9,980,222,071 10,622,438,071 12,799,964,871
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 (in shares) 66,822,519,695 66,822,519,695 66,822,519,695
American Depository Receipts (ADRs) (in shares) 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 (in shares) 59,770,481,573 59,770,481,573 59,770,481,573
American Depository Receipts (ADRs) (in shares) 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 New York Mellon      
Schedule of Shareholder Composition [Line Items]      
Shares (in shares)   0 0
American Depository Receipts (ADRs) (in shares)   10,622,438,071 12,799,964,871
Shares outstanding (in shares)   10,622,438,071 12,799,964,871
Percentage of equity holding   5.64% 6.79%
J P Morgan Chase Bank (ADRs)      
Schedule of Shareholder Composition [Line Items]      
Shares (in shares) 0    
American Depository Receipts (ADRs) (in shares) 9,980,222,071    
Shares outstanding (in shares) 9,980,222,071    
Percentage of equity holding 5.30%    
Banks on behalf of third parties      
Schedule of Shareholder Composition [Line Items]      
Shares (in shares) 17,715,643,262 16,842,708,565 19,416,795,808
American Depository Receipts (ADRs) (in shares) 0 0 0
Shares outstanding (in shares) 17,715,643,262 16,842,708,565 19,416,795,808
Percentage of equity holding 9.40% 8.94% 10.30%
Pension funds (AFP) on behalf of third parties      
Schedule of Shareholder Composition [Line Items]      
Shares (in shares) 19,486,919,574 20,794,099,878 18,392,349,767
American Depository Receipts (ADRs) (in shares) 0 0 0
Shares outstanding (in shares) 19,486,919,574 20,794,099,878 18,392,349,767
Percentage of equity holding 10.34% 11.03% 9.76%
Stock brokers on behalf of third parties      
Schedule of Shareholder Composition [Line Items]      
Shares (in shares) 5,209,519,338 5,276,952,871 5,029,151,233
American Depository Receipts (ADRs) (in shares) 0 0 0
Shares outstanding (in shares) 5,209,519,338 5,276,952,871 5,029,151,233
Percentage of equity holding 2.76% 2.80% 2.67%
Other minority holders      
Schedule of Shareholder Composition [Line Items]      
Shares (in shares) 9,460,821,281 8,316,926,141 6,214,863,847
American Depository Receipts (ADRs) (in shares) 0 0 0
Shares outstanding (in shares) 9,460,821,281 8,316,926,141 6,214,863,847
Percentage of equity holding 5.02% 4.41% 3.30%