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Provisions (Details) - CLP ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of other provisions [abstract]
Provision for minimum dividends	$ 177,902	$ 178,462
Provisions for contingent loan risks	24,971	25,016
Provisions for other contingencies	501	468
Provisions	$ 203,374	$ 203,946	$ 217,512

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- Definition

Provision for minimum dividends.

+ References

No definition available.

+ Details

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Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- 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

X

- 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:	ifrs-full_DisclosureOfOtherProvisionsAbstract
Namespace Prefix:	ifrs-full_
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 2019-01-01
-Paragraph 54
-Subparagraph l
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_l&doctype=Standard
-URIDate 2019-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant