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Equity (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure of share capital, reserves and other equity interest [text block] [Abstract] |
Schedule of activity shares |
|  | SHARES As of December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Issued as of January 1 |  |  | 188,446,126,794 |  |  |  | 188,446,126,794 |  |  |  | 188,446,126,794 |
Issuance of paid shares |  |  | - |  |  |  | - |  |  |  | - |
Issuance of outstanding shares |  |  | - |  |  |  | - |  |  |  | - |
Stock options exercised |  |  | - |  |  |  | - |  |  |  | - |
Issued as of December 31, |  |  | 188,446,126,794 |  |  |  | 188,446,126,794 |  |  |  | 188,446,126,794 |
Schedule of shareholder composition |
Corporate Name or Shareholder’s Name |  | Shares |  |  | ADRs (*) |  |  | Total |  |  | % of equity holding |
Santander Chile Holding S.A. |  |  | 66,822,519,695 |  |  |  | - |  |  |  | 66,822,519,695 |  |  |  | 35.46 |
Teatinos Siglo XXI Inversiones Limitada |  |  | 59,770,481,573 |  |  |  | - |  |  |  | 59,770,481,573 |  |  |  | 31.72 |
The Bank New York Mellon |  |  | - |  |  |  | 20,710,338,871 |  |  |  | 20,710,338,871 |  |  |  | 10.99 |
Banks on behalf of third parties |  |  | 17,318,500,798 |  |  |  | - |  |  |  | 17,318,500,798 |  |  |  | 9.19 |
Pension funds (AFP) on behalf of third parties |  |  | 11,949,134,854 |  |  |  | - |  |  |  | 11,949,134,854 |  |  |  | 6.34 |
Stock brokers on behalf of third parties |  |  | 5,870,596,720 |  |  |  | - |  |  |  | 5,870,596,720 |  |  |  | 3.12 |
Other minority holders |  |  | 6,004,554,283 |  |  |  | - |  |  |  | 6,004,554,283 |  |  |  | 3.18 |
Total |  |  | 167,735,787,923 |  |  |  | 20,710,338,871 |  |  |  | 188,446,126,794 |  |  |  | 100.00 |
Corporate Name or Shareholder’s Name |  | Shares |  |  | ADRs (*) |  |  | Total |  |  | % of equity holding |
Santander Chile Holding S.A. |  |  | 66,822,519,695 |  |  |  | - |  |  |  | 66,822,519,695 |  |  |  | 35.46 |
Teatinos Siglo XXI Inversiones Limitada |  |  | 59,770,481,573 |  |  |  | - |  |  |  | 59,770,481,573 |  |  |  | 31.72 |
The Bank New York Mellon |  |  | - |  |  |  | 22,450,671,671 |  |  |  | 22,450,671,671 |  |  |  | 11.91 |
Banks on behalf of third parties |  |  | 15,925,407,468 |  |  |  | - |  |  |  | 15,925,407,468 |  |  |  | 8.45 |
Pension funds (AFP) on behalf of third parties |  |  | 9,929,343,874 |  |  |  | - |  |  |  | 9,929,343,874 |  |  |  | 5.27 |
Stock brokers on behalf of third parties |  |  | 6,892,162,980 |  |  |  | - |  |  |  | 6,892,162,980 |  |  |  | 3.66 |
Other minority holders |  |  | 6,655,539,533 |  |  |  | - |  |  |  | 6,655,539,533 |  |  |  | 3.53 |
Total |  |  | 165,995,455,123 |  |  |  | 22,450,671,671 |  |  |  | 188,446,126,794 |  |  |  | 100.00 |
Corporate Name or Shareholder’s Name |  | Shares |  |  | ADRs (*) |  |  | Total |  |  | % of equity holding |
Santander Chile Holding S.A. |  |  | 66,822,519,695 |  |  |  | - |  |  |  | 66,822,519,695 |  |  |  | 35.46 |
Teatinos Siglo XXI Inversiones Limitada |  |  | 59,770,481,573 |  |  |  | - |  |  |  | 59,770,481,573 |  |  |  | 31.72 |
The Bank New York Mellon |  |  | - |  |  |  | 24,822,041,271 |  |  |  | 24,822,041,271 |  |  |  | 13.17 |
Banks on behalf of third parties |  |  | 15,957,137,883 |  |  |  | - |  |  |  | 15,957,137,883 |  |  |  | 8.47 |
Pension funds (AFP) on behalf of third parties |  |  | 9,995,705,956 |  |  |  | - |  |  |  | 9,995,705,956 |  |  |  | 5.30 |
Stock brokers on behalf of third parties |  |  | 5,551,024,270 |  |  |  | - |  |  |  | 5,551,024,270 |  |  |  | 2.95 |
Other minority holders |  |  | 5,527,216,146 |  |  |  | - |  |  |  | 5,527,216,146 |  |  |  | 2.93 |
Total |  |  | 163,624,085,523 |  |  |  | 24,822,041,271 |  |  |  | 188,446,126,794 |  |  |  | 100.00 |
Schedule of basic and diluted earnings per share |
|  | As of December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
|  | MCh$ |  |  | MCh$ |  |  | MCh$ |
a) Basic earnings per share |  |  |  |  |  |  |  |  |
Total attributable to the shareholders of the Bank |  |  | 845,645 |  |  |  | 547,614 |  |  |  | 619,091 |
Weighted average number of outstanding shares |  |  | 188,446,126,794 |  |  |  | 188,446,126,794 |  |  |  | 188,446,126,794 |
Basic earnings per share (in Ch$) |  |  | 4,487 |  |  |  | 2.906 |  |  |  | 3.285 |
Basic earnings per share from continuing operations (in Ch$) |  |  | 4,487 |  |  |  | 2.906 |  |  |  | 3.276 |
Basic earnings per share from discontinued operations (in Ch$) |  |  | - |  |  |  | - |  |  |  | 0.009 |
b) Diluted earnings per share |  |  |  |  |  |  |  |  |  |  |  |
Total attributable to the shareholders of the Bank |  |  | 845,645 |  |  |  | 547,614 |  |  |  | 619,091 |
Weighted average number of outstanding shares |  |  | 188,446,126,794 |  |  |  | 188,446,126,794 |  |  |  | 188,446,126,794 |
Adjusted number of shares |  |  | 188,446,126,794 |  |  |  | 188,446,126,794 |  |  |  | 188,446,126,794 |
Diluted earnings per share (in Ch$) |  |  | 4,487 |  |  |  | 2,906 |  |  |  | 3,285 |
Diluted earnings per share from continuing operations (in Ch$) |  |  | 4,487 |  |  |  | 2,906 |  |  |  | 3,276 |
Diluted earnings per share from discontinued operations (in Ch$) |  |  | - |  |  |  | - |  |  |  | 0.009 |
Schedule of other comprehensive income from available for sale investments and cash flow hedges |
|  | For the years ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
|  | MCh$ |  |  | MCh$ |  |  | MCh$ |
Debt instruments at FVOCI |  |  |  |  |  |  |  |  |
As of January 1, |  |  | 102,855 |  |  |  | 29,184 |  |  |  | 6,962 |
Gain (losses) on the re-measurement of debt instruments at FVOCI, before tax |  |  | (233,109 | ) |  |  | 30,062 |  |  |  | (17,775 | )
Recycling from other comprehensive income to income for the year |  |  | 18,031 |  |  |  | 43,609 |  |  |  | 39,997 |
Subtotals |  |  | (215,078 | ) |  |  | 73,671 |  |  |  | 22,222 |
Total |  |  | (112,223 | ) |  |  | 102,855 |  |  |  | 29,184 |
Cash flow hedges |  |  |  |  |  |  |  |  |  |  |  |
As of January 1, |  |  | (136,765 | ) |  |  | (40,435 | ) |  |  | 9,803 |
Gains (losses) on the re-measurement of cash flow hedges, before tax |  |  | (211,122 | ) |  |  | (93,182 | ) |  |  | (49,163 | )
Recycling adjustments on cash flow hedges, before tax |  |  | (25,694 | ) |  |  | (3,148 | ) |  |  | (1,075 | )
Amounts removed from equity and included in carrying amount of non-financial asset (liability) which acquisition or incurrence was hedged as a highly probable transaction |  |  | - |  |  |  | - |  |  |  | - |
Subtotals |  |  | (236,816 | ) |  |  | (96,330 | ) |  |  | (50,238 | )
Total |  |  | (373,581 | ) |  |  | (136,765 | ) |  |  | (40,435 | )
Other comprehensive income, before taxes |  |  | (485,804 | ) |  |  | (33,910 | ) |  |  | (11,251 | )
Income tax related to other comprehensive income components |  |  |  |  |  |  |  |  |  |  |  |
Income tax relating to debt instruments at FVOCI |  |  | 31,650 |  |  |  | (27,464 | ) |  |  | (7,756 | )
Income tax relating to cash flow hedges |  |  | 100,867 |  |  |  | 36,927 |  |  |  | 10,918 |
Total |  |  | 132,517 |  |  |  | 9,463 |  |  |  | 3,162 |
Other comprehensive income, net of tax |  |  | (353,287 | ) |  |  | (24,447 | ) |  |  | (8,089 | )
Attributable to: |  |  |  |  |  |  |  |  |  |  |  |
Shareholders of the Bank |  |  | (353,849 | ) |  |  | (25,293 | ) |  |  | (8,856 | )
Non-controlling interest |  |  | 562 |  |  |  | 846 |  |  |  | 767 |
Schedule of perpetual bond |
|  | As of December 31, |
|  | 2021 |  |  | 2020 |
|  | MCh$ |  |  | MCh$ |
Perpetual bond |  |  | 598,136 |  |  |  | - |
Totals |  |  | 598,136 |  |  |  | - |
|  | As of December 31, |
|  | 2021 |  |  | 2020 |
|  | MCh$ |  |  | MCh$ |
US$ Bonds |  |  | 598,136 |  |  |  | - |
Total |  |  | 598,136 |  |  |  | - |
Schedule of bank’s debts, both current and non-current |
|  | As of December 31, 2021 |
|  | Current |  |  | Non-current |  |  | Total |
|  | MCh$ |  |  | MCh$ |  |  | MCh$ |
Perpetual bond |  |  | - |  |  |  | 598,136 |  |  |  | 598,136 |
Total |  |  | - |  |  |  | 598,136 |  |  |  | 598,136 |
Schedule of placement of perpetual bond |
Series |  | Currency |  | Amount |  |  | Terms (years) |  |  | Annual Interest Rate |  | Issuance date |  | Principal Amount |  |  | Maturity date |
AT1 Bond |  | USD |  |  | 700,000,000 |  |  |  | - |  |  | 4.63 annual |  | 10-21-2021 |  |  | 700,000,000 |  |  |  | - |
Total USD |  |  |  |  | 700,000,000 |  |  |  |  |  |  |  |  |  |  |  | 700,000,000 |  |  |  |  |

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