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Investments Under Resale Agreements and Obligations Under Repurchase Agreements (Details 1) - CLP ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | $ 308,734 | $ 303,820
Up to 1 month |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 298,711 | 297,162
Over 1 month and up to 3 months |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 8,583 | 1,448
Over 3 months and up to 12 months [Member] |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 1,440 | 5,210
Instruments Issued By Chilean Government And Central Bank [Member] |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 16,368 | 130,197
Instruments Issued By Chilean Government And Central Bank [Member] | Up to 1 month |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 16,368 | 130,197
Other Instruments Issued In Chile [Member] |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 292,366 | 173,623
Other Instruments Issued In Chile [Member] | Up to 1 month |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 282,343 | 166,965
Other Instruments Issued In Chile [Member] | Over 1 month and up to 3 months |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending |  | 1,448
Other Instruments Issued In Chile [Member] | Over 3 months and up to 12 months [Member] |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 1,440 | 5,210
Central Bank bonds | Instruments Issued By Chilean Government And Central Bank [Member] |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 7,301 | 130,197
Central Bank bonds | Instruments Issued By Chilean Government And Central Bank [Member] | Up to 1 month |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 7,301 | 130,197
Deposits in domestic banks [Member] | Other Instruments Issued In Chile [Member] |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 289,279 | 168,825
Deposits in domestic banks [Member] | Other Instruments Issued In Chile [Member] | Up to 1 month |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 280,696 | 162,167
Deposits in domestic banks [Member] | Other Instruments Issued In Chile [Member] | Over 1 month and up to 3 months |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 8,583 | 1,448
Deposits in domestic banks [Member] | Other Instruments Issued In Chile [Member] | Over 3 months and up to 12 months [Member] |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending |  | 5,210
Other Instruments | Other Instruments Issued In Chile [Member] |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 3,087 | 4,798
Other Instruments | Other Instruments Issued In Chile [Member] | Up to 1 month |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 1,647 | $ 4,798
Other Instruments | Other Instruments Issued In Chile [Member] | Over 3 months and up to 12 months [Member] |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 1,440 |
Central Bank promissory notes | Instruments Issued By Chilean Government And Central Bank [Member] |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | 9,067 |
Central Bank promissory notes | Instruments Issued By Chilean Government And Central Bank [Member] | Up to 1 month |  |
Payables by selling financial instruments and security repurchase commitment [Line Items] |  |
Payables from repurchase agreements and security lending | $ 9,067 |

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