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Other Financial Obligations (Details) - Schedule of other financial obligations $ in Thousands, $ in Millions | Dec. 31, 2020 CLP ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CLP ($)
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Schedule of other financial obligations [Abstract] |  |  |
Other Chilean obligations | $ 191,258 |  | $ 138,575
Public sector obligations | 455 |  | 17,654
Total | $ 191,713 | $ 269,298 | $ 156,229

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- Definition Other domestic obligations that the entity does not separately disclose in the same statement or note. + References No definition available. + Details
Name: | bch_OtherDomesticObligations
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of public sector obligations. + References No definition available. + Details
Name: | bch_PublicSectorFinancialLiabilities
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Definition The amount of financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph m -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_m&doctype=Standard -URIDate 2020-01-01 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant