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Maturity of Assets and Liabilities (Details Textual) - CLP ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Maturity of Assets and Liabilities [abstract]
Provisions for loans to customers	$ 649,233	$ 585,378
Provisions for loans and advances to banks	110	1,012
Term saving accounts	$ 239,850	$ 224,303

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- References

No definition available.

+ Details

Name:	bch_MaturityOfAssetsAndLiabilitiesAbstract
Namespace Prefix:	bch_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

The amount of provisions for loans and advances to banks.

+ References

No definition available.

+ Details

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

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- Definition

The amount of provisions for loans to customers.

+ References

No definition available.

+ Details

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

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- Definition

The amount of customers saving accounts.

+ References

No definition available.

+ Details

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