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Loans and Advances to Banks, Net (Tables) | 12 Months Ended
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Dec. 31, 2019
Loans and Advances to Banks, net [abstract] |
Schedule of loans and advance to banks, net |
|  | 2018 |  |  | 2019 |
|  | MCh$ |  |  | MCh$ |
Domestic Banks |  |  |  |  |  |
Interbank loans |  |  | 100,023 |  |  |  | 150,007 |
Other credits with domestic banks |  |  | — |  |  |  | — |
Provisions for loans to domestic banks |  |  | (247 | ) |  |  | (33 | )
Subtotal |  |  | 99,776 |  |  |  | 149,974 |
Foreign Banks |  |  |  |  |  |  |  |
Loans to foreign banks |  |  | 239,797 |  |  |  | 289,337 |
Credits with third countries |  |  | 41,872 |  |  |  | 8,934 |
Chilean export trade banks |  |  | 12,873 |  |  |  | 61,860 |
Provisions for loans to foreign banks |  |  | (765 | ) |  |  | (77 | )
Subtotal |  |  | 293,777 |  |  |  | 360,054 |
Central Bank of Chile |  |  |  |  |  |  |  |
Central Bank deposits |  |  | 1,100,306 |  |  |  | 630,053 |
Other Central Bank credits |  |  | 525 |  |  |  | — |
Subtotal |  |  | 1,100,831 |  |  |  | 630,053 |
Total |  |  | 1,494,384 |  |  |  | 1,140,081 |
Schedule of impairment allowance for due from banks |
|  | 2018 |  |  | 2019 |
|  | Stage 1 Individual |  |  | Stage 2 Individual |  |  | Stage 3 Individual |  |  | Total |  |  | Stage 1 Individual |  |  | Stage 2 Individual |  |  | Stage 3 Individual |  |  | Total |
|  | MCh$ |  |  | MCh$ |  |  | MCh$ |  |  | MCh$ |  |  | MCh$ |  |  | MCh$ |  |  | MCh$ |  |  | MCh$ |
Domestic Banks |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Normal |  |  | 100,023 |  |  |  | — |  |  |  | — |  |  |  | 100,023 |  |  |  | 150,007 |  |  |  | — |  |  |  | — |  |  |  | 150,007 |
Substandard |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Non-complying |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Subtotal |  |  | 100,023 |  |  |  | — |  |  |  | — |  |  |  | 100,023 |  |  |  | 150,007 |  |  |  | — |  |  |  | — |  |  |  | 150,007 |
Foreign Banks |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Normal |  |  | 266,648 |  |  |  | 27,894 |  |  |  | — |  |  |  | 294,542 |  |  |  | 238,491 |  |  |  | 121,640 |  |  |  | — |  |  |  | 360,131 |
Substandard |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Non-complying |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Subtotal |  |  | 266,648 |  |  |  | 27,894 |  |  |  | — |  |  |  | 294,542 |  |  |  | 238,491 |  |  |  | 121,640 |  |  |  | — |  |  |  | 360,131 |
Central Bank of Chile |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Normal |  |  | 1,100,831 |  |  |  | — |  |  |  | — |  |  |  | 1,100,831 |  |  |  | 630,053 |  |  |  | — |  |  |  | — |  |  |  | 630,053 |
Substandard |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Non-complying |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Subtotal |  |  | 1,100,831 |  |  |  | — |  |  |  | — |  |  |  | 1,100,831 |  |  |  | 630,053 |  |  |  | — |  |  |  | — |  |  |  | 630,053 |
Total |  |  | 1,467,502 |  |  |  | 27,894 |  |  |  | — |  |  |  | 1,495,396 |  |  |  | 1,018,551 |  |  |  | 121,640 |  |  |  | — |  |  |  | 1,140,191 |
Schedule of changes in gross carrying amount and corresponding allowance for ECL by stage |
|  | Changes as of December 31, 2018 |
|  | Stage 1 Individual |  |  | Stage 2 Individual |  |  | Stage 3 Individual |  |  | Total |
|  | Gross carrying amount MCh$ |  |  | ECL MCh$ |  |  | Gross carrying amount MCh$ |  |  | ECL MCh$ |  |  | Gross carrying amount MCh$ |  |  | ECL MCh$ |  |  | Gross carrying amount MCh$ |  |  | ECL MCh$ |
ECL allowances as of January 1, 2018 |  |  | 760,285 |  |  |  | 772 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 760,285 |  |  |  | 772 |
Net change on ECL allowances * |  |  | 746,808 |  |  |  | 250 |  |  |  | 1,376 |  |  |  | 9 |  |  |  | — |  |  |  | — |  |  |  | 748,184 |  |  |  | 259 |
Transfer to Stage 1 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Transfer to Stage 2 |  |  | (26,518 | ) |  |  | (63 | ) |  |  | 26,518 |  |  |  | 63 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Transfer to Stage 3 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Impact on year-end ECL of exposures transferred between stages during the year ** |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3 |
Amounts written off |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Foreign exchange adjustments |  |  | (13,073 | ) |  |  | (22 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (13,073 | ) |  |  | (22 | )
Total |  |  | 1,467,502 |  |  |  | 937 |  |  |  | 27,894 |  |  |  | 75 |  |  |  | — |  |  |  | — |  |  |  | 1,495,396 |  |  |  | 1,012 |
|  | Changes as of December 31, 2019 |
|  | Stage 1 Individual |  |  | Stage 2 Individual |  |  | Stage 3 Individual |  |  | Total |
|  | Gross carrying amount MCh$ |  |  | ECL MCh$ |  |  | Gross carrying amount MCh$ |  |  | ECL MCh$ |  |  | Gross carrying amount MCh$ |  |  | ECL MCh$ |  |  | Gross carrying amount MCh$ |  |  | ECL MCh$ |
ECL allowances as of January 1, 2019 |  |  | 1,467,502 |  |  |  | 937 |  |  |  | 27,894 |  |  |  | 75 |  |  |  | — |  |  |  | — |  |  |  | 1,495,396 |  |  |  | 1,012 |
Net change on ECL allowances * |  |  | (321,373 | ) |  |  | (832 | ) |  |  | (6,339 | ) |  |  | (48 | ) |  |  | — |  |  |  | — |  |  |  | (327,712 | ) |  |  | (880 | )
Transfer to Stage 1 |  |  | 16,405 |  |  |  | 26 |  |  |  | (16,405 | ) |  |  | (26 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Transfer to Stage 2 |  |  | (126,709 | ) |  |  | (27 | ) |  |  | 126,709 |  |  |  | 27 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Transfer to Stage 3 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Impact on year-end ECL of exposures transferred between stages during the year ** |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Changes to models and assumptions |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Amounts written off |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Foreign exchange adjustments |  |  | (17,274 | ) |  |  | (20 | ) |  |  | (10,219 | ) |  |  | (2 | ) |  |  | — |  |  |  | — |  |  |  | (27,493 | ) |  |  | (22 | )
Total |  |  | 1,018,551 |  |  |  | 84 |  |  |  | 121,640 |  |  |  | 26 |  |  |  | — |  |  |  | — |  |  |  | 1,140,191 |  |  |  | 110 |
| * | Net change between assets originated and assets repaid, excluding write offs.
| ** | Represents the change in the year-end ECLs of exposures that were transferred from one stage to another during the year.

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