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Loans to Customers at amortized cost (Details) - CLP ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Loans to Customers at amortized cost (Details) [Line Items]
Loans to customers	$ 33,592,377	$ 30,101,583
Commercial loan guarantee obligations	3,024,118	2,021,688
Increase decrease in allowances before taxes	25,814	93,669
Total over due portfolio	$ 4,625	4,178
Minimum [Member]
Loans to Customers at amortized cost (Details) [Line Items]
Average life	2 years
Maximum [Member]
Loans to Customers at amortized cost (Details) [Line Items]
Average life	15 years
Finance Lease For Real Estate [Member]
Loans to Customers at amortized cost (Details) [Line Items]
Loans to customers	$ 810,969	803,238
Finance Lease For Other Assets [Member]
Loans to Customers at amortized cost (Details) [Line Items]
Loans to customers	$ 802,316	$ 789,969

X

- Definition

Commercial loan guarantee obligations.

+ References

No definition available.

+ Details

Name:	bch_CommercialLoanGuaranteeObligations
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the average life of leasing contracts related to real estate, industrial machinery, vehicles and transport equipment.

+ References

No definition available.

+ Details

Name:	bch_LeasingContractsAverageUsefulLife
Namespace Prefix:	bch_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the overdue portfolio not included in net balance receivable.

+ References

No definition available.

+ Details

Name:	bch_LoansAreOfPastDue
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- Definition

The increase (decrease) in the allowance account used to record the impairment of financial assets due to credit losses. [Refer: Financial assets; Allowance account for credit losses of financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b
-URIDate 2021-03-24

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

X

- Definition

The amount of loans and advances the entity has made to customers.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard
-URIDate 2021-03-24

+ Details

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Namespace Prefix:	ifrs-full_
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Balance Type:	debit
Period Type:	instant

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

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- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=bch_FinanceLeaseForRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: