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Financial Assets at Fair Value Through Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2022
Financial Assets at Fair Value through Other Comprehensive Income [Abstract] |
Schedule of financial assets |
|  | 2022 |  |  | 2021 |
|  | MCh$ |  |  | MCh$ |
Debt Financial Instruments |  |  | 3,967,392 |  |  |  | 3,054,809 |
Equity Instruments |  |  | 6,545 |  |  |  | 6,365 |
Total |  |  | 3,973,937 |  |  |  | 3,061,174 |
Schedule of debt financial instruments |
|  | 2022 |  |  | 2021 |
|  | MCh$ |  |  | MCh$ |
Instruments issued by the Chilean Government and Central Bank of Chile |  |  |  |  |  |
Debt financial instruments from the Central Bank of Chile |  |  | — |  |  |  | 102 |
Bonds and Promissory notes from the Chilean Government |  |  | 2,254,578 |  |  |  | 2,480,423 |
Other fiscal debt financial instruments |  |  | 4,279 |  |  |  | 8,325 |
Other Instruments Issued in Chile |  |  |  |  |  |  |  |
Debt financial instruments from other domestic banks |  |  | 1,494,914 |  |  |  | 538,486 |
Bonds and trade effects from domestic companies |  |  | 45,994 |  |  |  | 27,473 |
Other debt financial instruments issued in the country |  |  | — |  |  |  | — |
Instruments Issued Abroad |  |  |  |  |  |  |  |
Financial instruments from foreign Central Banks |  |  | — |  |  |  | — |
Financial instruments from foreign governments and fiscal entities |  |  | 42,017 |  |  |  | — |
Debt financial instruments from other foreign banks |  |  | 125,610 |  |  |  | — |
Bonds and trade effects from foreign companies |  |  | — |  |  |  | — |
Other debt financial instruments issued abroad |  |  | — |  |  |  | — |
Total |  |  | 3,967,392 |  |  |  | 3,054,809 |
Schedule of credit ratings of the issuers of debt instruments |
|  | As of December 31, 2022 |  |  | As of December 31, 2021 |
|  | Stage 1 Individual |  |  | Stage 2 Individual |  |  | Stage 3 Individual |  |  | Total Individual |  |  | Stage 1 Individual |  |  | Stage 2 Individual |  |  | Stage 3 Individual |  |  | Total Individual |
|  | MCh$ |  |  | MCh$ |  |  | MCh$ |  |  | MCh$ |  |  | MCh$ |  |  | MCh$ |  |  | MCh$ |  |  | MCh$ |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment grade |  |  | 3,967,392 |  |  |  | — |  |  |  | — |  |  |  | 3,967,392 |  |  |  | 3,054,795 |  |  |  | 14 |  |  |  | — |  |  |  | 3,054,809 |
Non-investment grade |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Without rating |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Total |  |  | 3,967,392 |  |  |  | — |  |  |  | — |  |  |  | 3,967,392 |  |  |  | 3,054,795 |  |  |  | 14 |  |  |  | — |  |  |  | 3,054,809 |
Schedule of changes in the corresponding ECLs of debt instrument |
|  | Stage 1 Individual |  |  | Stage 2 Individual |  |  | Stage 3 Individual |  |  | Total |
|  | Fair value MCh$ |  |  | ECL MCh$ |  |  | Fair value MCh$ |  |  | ECL MCh$ |  |  | Fair value MCh$ |  |  | ECL MCh$ |  |  | Fair value MCh$ |  |  | ECL MCh$ |
Balance as of January 1, 2021 |  |  | 1,060,307 |  |  |  | 3,078 |  |  |  | 216 |  |  |  | 6 |  |  |  | — |  |  |  | — |  |  |  | 1,060,523 |  |  |  | 3,084 |
Net change on Balance * |  |  | 2,096,637 |  |  |  | (4,265 | ) |  |  | (276 | ) |  |  | (8 | ) |  |  | — |  |  |  | — |  |  |  | 2,096,361 |  |  |  | (4,273 | )
Change in fair value |  |  | (103,047 | ) |  |  | — |  |  |  | (60 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (103,107 | ) |  |  | — |
Transfer to Stage 1 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Transfer to Stage 2 |  |  | (134 | ) |  |  | (4 | ) |  |  | 134 |  |  |  | 4 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Transfer to Stage 3 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Impact on year-end ECL of exposures transferred between stages during the year ** |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Impact of net re-measurement of year-end ECL |  |  | — |  |  |  | 5,270 |  |  |  | — |  |  |  | (2 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5,268 |
Amounts written off |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Foreign exchange adjustments |  |  | 1,032 |  |  |  | 6 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,032 |  |  |  | 6 |
Balance as of December 31, 2021 |  |  | 3,054,795 |  |  |  | 4,085 |  |  |  | 14 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3,054,809 |  |  |  | 4,085 |
Balance as of January 1, 2022 |  |  | 3,054,795 |  |  |  | 4,085 |  |  |  | 14 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3,054,809 |  |  |  | 4,085 |
Net change on Balance * |  |  | 864,521 |  |  |  | 5,411 |  |  |  | (14 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 864,507 |  |  |  | 5,411 |
Change in fair value |  |  | 48,076 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 48,076 |  |  |  | — |
Transfer to Stage 1 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Transfer to Stage 2 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Transfer to Stage 3 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Impact on year-end ECL of exposures transferred between stages during the year ** |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Impact of net re-measurement of year-end ECL |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Amounts written off |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Foreign exchange adjustments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Balance as of December 31, 2022 |  |  | 3,967,392 |  |  |  | 9,496 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3,967,392 |  |  |  | 9,496 |
| * | Net change between assets purchased and assets derecognized excluding write offs.
| ** | Represents the change in the year-end ECLs of exposures that were transferred from one stage to another during the year.
Schedule of detail of equity instruments |
|  | 2022 |  |  | 2021 |
|  | MCh$ |  |  | MCh$ |
Equity instruments issued in Chile |  |  | 5,700 |  |  |  | 5,499 |
Equity instruments issued by foreign institutions |  |  | 845 |  |  |  | 866 |
Total |  |  | 6,545 |  |  |  | 6,365 |
Schedule of gross realized gains and losses on the sale of debt financial instruments |
|  | 2022 |  |  | 2021 |  |  | 2020 |
|  | MCh$ |  |  | MCh$ |  |  | MCh$ |
Net gain (loss) on financial assets before income tax |  |  | 48,076 |  |  |  | (51,717 | ) |  |  | (7,675 | )
Income tax on other comprehensive income |  |  | 804 |  |  |  | 4,171 |  |  |  | 2,304 |
Net effect in equity |  |  | 48,880 |  |  |  | (47,546 | ) |  |  | (5,371 | )

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