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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: