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Fair Value of Financial Assets and Liabilities-Transfers between levels (Details) - Instruments Issued By Chilean Government And Central Bank [Member] - CLP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Financial assets held-for-trading [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Transfers from level 1 to level 2 | $ 84 | $ 496
Transfers from level 2 to level 1 | 17 |
Instruments Issued By Foreign Institutions [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Transfers from level 1 to level 2 |  |
Transfers from level 2 to level 1 |  |
Financial assets at fair value through other comprehensive income [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Transfers from level 1 to level 2 |  |
Transfers from level 2 to level 1 |  |

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- Definition The amount of transfers out of Level 1 and into Level 2 of the fair value hierarchy of assets held at the end of the reporting period. [Refer: Level 1 of fair value hierarchy [member]; Level 2 of fair value hierarchy [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_c&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of transfers out of Level 2 and into Level 1 of the fair value hierarchy of assets held at the end of the reporting period. [Refer: Level 1 of fair value hierarchy [member]; Level 2 of fair value hierarchy [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_c&doctype=Standard -URIDate 2019-03-27 + Details
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