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Provisions (Details) - Schedule of provisions $ in Thousands, $ in Millions | Dec. 31, 2020 CLP ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CLP ($)
--- | --- | --- | ---
Schedule of provisions [Abstract] |  |  |
Provision for minimum dividends | $ 138,932 |  | $ 177,902
Provisions for contingent loan risks | 98,181 |  | 24,971
Provisions for other contingencies | 507 |  | 501
Provisions | $ 237,620 | $ 333,783 | $ 203,374

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- Definition Provision for minimum dividends. + References No definition available. + Details
Name: | bch_ProvisionForMinimumDividends
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Provisions for contingent loan risks. + References No definition available. + Details
Name: | bch_ProvisionsForContingentLoanRisks
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Provisions for other contingencies. + References No definition available. + Details
Name: | bch_ProvisionsForOtherContingencies
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | bch_ScheduleOfProvisionsAbstract
Namespace Prefix: | bch_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of liabilities of uncertain timing or amount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_l&doctype=Standard -URIDate 2020-01-01 + Details
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