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v3.20.1

Related Party Transactions (Details Textual) - CLP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Related Party Transactions (Textual) |  |  |
Maximum % of assets held as trading securities or investments by production companies | 50.00% |  |
Fees paid for advisory services | $ 90 | $ 206 | $ 334
Travel and other related expenses | 104 | 92 | 116
Banchile Corredores de Seguros Ltda. |  |  |
Related Party Transactions (Textual) |  |  |
Fees for attending Committees and Subsidiary Board meetings | 13 | 12 | 18
Comder Contraparte Central S.a |  |  |
Related Party Transactions (Textual) |  |  |
Net gain | $ 123,461 | $ 71,297 | $ 96,075

X
- Definition The amount represents the Director's fees for advisory services, related party transactions. + References No definition available. + Details
Name: | bch_DirectorsFeesForAdvisoryServicesRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount represents the Director's fees for attending committees and subsidiary board meeting, related party transactions. + References No definition available. + Details
Name: | bch_DirectorsFeesForAttendingCommitteesAndSubsidiaryBoardMeetingsRelatedPartyTransaction
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount represents the Director's consulting charges, related party transactions. + References No definition available. + Details
Name: | bch_DirectorsTravelAndOtherRelatedExpensesRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the maximum percentage of assets held as trading securities or investments to total assets of the company, also being the condition to come within the purview of an operating company to the entity. + References No definition available. + Details
Name: | bch_MaximumThresholdPercentageOfTradingSecuritiesOrInvestmentsToTotalAssetsConditionForBeingOperatingCompany
Namespace Prefix: | bch_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of income loss, resulting from related party transactions. + References No definition available. + Details
Name: | bch_NetIncomeLossRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=bch_BanchileCorredoresDeSegurosLtda.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=bch_ComderContraparteCentralS.aMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |