Risk Management (Details) $ in Millions	12 Months Ended
Dec. 31, 2021 CLP ($)	Dec. 31, 2021 CLF	Dec. 31, 2020 CLP ($)
Risk Management (Details) [Line Items]
Credit committee amount (in Unidad de Fomento) \| CLF		CLF 750,000
Maximum exposure to credit risk does not exceed in percentage	10.00%	10.00%	10.00%
Number of collateral assets	242,870	242,870	240,087
Value of guarantees, classified as impaired (in Pesos)	$ 28,189		$ 98,653
Value of guarantees, classified as non-impaired (in Pesos)	177,169		133,949
Assets received in lieu of payment (in Pesos)	$ 13,584		$ 6,753
Percentage of renegotiated portfolio of Banco de Chile on total loans	2.73%	2.73%
Overdue period			30 days
Period used to test for impairment of loans	90 days	90 days
Minimum level ratio	80.00%	80.00%
Observed rates	99.00%	99.00%
Maximum potential loss impact on the trading book (in Pesos)	$ 14,042
Portfolio approximately amount (in Pesos)	$ 162,252
Percentage of risk weighted assets	8.00%	8.00%
Percentage of minimum regulatory capital	4.50%	4.50%
Percentage of total assets	3.00%	3.00%
Percentage of provisions risk weighted assets	6.00%	6.00%
COVID-19 Contingency [Member]
Risk Management (Details) [Line Items]
Annual sales (in Unidad de Fomento) \| CLF		CLF 1,000,000
Guaranteed amount deductible not exceed, Percentage	5.00%	5.00%
Provision equivalent percentage	100.00%	100.00%
loan risk (in Pesos)	$ 70,352		$ 49,848
COVID-19 Contingency [Member] \| Minimium [Member]
Risk Management (Details) [Line Items]
Guarantee coverage loans, Percentage	60.00%	60.00%
COVID-19 Contingency [Member] \| Maximum [Member]
Risk Management (Details) [Line Items]
Guarantee coverage loans, Percentage	85.00%	85.00%
Management overlays [Member]
Risk Management (Details) [Line Items]
Loans to customers at amortized cost (in Pesos)	$ 30,980		$ 24,370
Credit Exposure Factor [Member]
Risk Management (Details) [Line Items]
Maximum exposure to credit risk does not exceed in percentage	95.00%	95.00%
Confidence level [Member]
Risk Management (Details) [Line Items]
Observed rates	99.00%	99.00%
Confidence level 1 [Member]
Risk Management (Details) [Line Items]
Observed rates	99.00%	99.00%

Annual sales affected by the COVID-19.

No definition available.

Name:	bch_AnnualAmountofSalesAffectedByCOVID19
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Credit committee amount.

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

Name:	bch_GenerateLosses
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

It represent guarantee coverage loans, Percentage.

+ References

No definition available.

+ Details

Name:	bch_GuaranteeCoverageLoansPercentage
Namespace Prefix:	bch_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

It represent guaranteed amount deductible not exceed, Percentage.

+ References

No definition available.

+ Details

Name:	bch_GuaranteedAmountDeductibleNotExceedPercentage
Namespace Prefix:	bch_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of liquidity coverage ratio and net stable financing ratio.

+ References

No definition available.

+ Details

Name:	bch_LiquidityAndFinancingMinimumLevelRatio
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The Amount of Loans to customers at amortized cost

+ References

No definition available.

+ Details

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

- Definition

Represents the percentage of maximum exposure to credit risk without taking into account guarantees or other credit enhancements by client or counterparty, does not exceed.

+ References

No definition available.

+ Details

Name:	bch_MaximumExposureToCreditRiskDoesNotExceed
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

The maximum percentage of provisions on renegotiated loans.

+ References

No definition available.

+ Details

Name:	bch_MaximumPercentageOfProvisionOnRenegotiatedLoans
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum amount of potential loss impact on trading book.

+ References

No definition available.

+ Details

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

- Definition

The number of collaterals held by the bank.

+ References

No definition available.

+ Details

Name:	bch_NumberOfCollaterals
Namespace Prefix:	bch_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	bch_PercentageOfMinimumRegulatoryCapital
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of provisions risk weighted assets

+ References

No definition available.

+ Details

Name:	bch_PercentageOfProvisionsRiskWeightedAssets
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of renegotiated portfolio of bank on the total loans.

+ References

No definition available.

+ Details

Name:	bch_PercentageOfRenegotiatedPortfolioOnLoans
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	bch_PercentageOfRiskWeightedAssets
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of total assets

+ References

No definition available.

+ Details

Name:	bch_PercentageOfTotalAssets
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The period of time with overdue payments which is used to determine testing for impairment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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

- Definition

Provision equivalent percentage.

+ References

No definition available.

+ Details

Name:	bch_ProvisionEquivalentPercentage
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

The amount of guarantees maintained which relate to placements individually classified a impaired.

+ References

No definition available.

+ Details

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

- Definition

The amount of guarantees maintained which relate to non-impaired loans.

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

Name:	bch_loanRisk
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of assets obtained by the entity taking possession of the collateral it holds as security or calling on other credit enhancements (for example, guarantees). [Refer: Guarantees [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 38
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_38_a&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_AssetsObtained
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	ifrs-full_TypesOfRisksAxis=bch_COVID19ContingencyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=bch_ManagementOverlaysMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_GeographicalAreasAxis=bch_CreditExposureFactorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_GeographicalAreasAxis=bch_ConfidenceLevelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_GeographicalAreasAxis=bch_ConfidenceLevelOMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: