Aggregate amount of operations.

No definition available.

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

- Definition

Annual sales affected by the COVID-19.

+ References

No definition available.

+ Details

Name:	bch_AnnualSalesAffectedByCOVID19
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	bch_FairValueAssumptionsExpectDividendRate
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Guarantee financing.

+ References

No definition available.

+ Details

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

- Definition

Increase of Guarantee Fund.

+ References

No definition available.

+ Details

Name:	bch_IncreaseOfGuaranteeFund
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

Minimum amount for review of approved applications by the Directors Credit Committee.

+ References

No definition available.

+ Details

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

- 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:	instant

- References

No definition available.

+ Details

Name:	bch_PercentageOfAsset
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	bch_PercentageOfAssets
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	bch_PercentageOfBasicCapital
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	bch_PercentageOfCapitalEquivalents
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

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

- 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:	instant

- References

No definition available.

+ Details

Name:	bch_PercentageOfRiskCategory
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	bch_PercentageOfRiskCategoryFour
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	bch_PercentageOfRiskCategoryOne
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	bch_PercentageOfRiskCategoryThree
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	bch_PercentageOfRiskCategoryTwo
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	bch_PercentageoOfRegulatoryCapital
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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 2020-01-01
-Paragraph 38
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_38_a&doctype=Standard
-URIDate 2020-01-01

+ Details

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

- Definition

The percentage of the entity's revenue. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 8
-IssueDate 2020-01-01
-Paragraph 34
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2020-en-r&anchor=para_34&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_PercentageOfEntitysRevenue
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Stated as a percentage, the estimated or actual value of the asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose) divided by its [historical] capitalized cost.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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:

- 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:

Risk Management (Details) $ in Millions, $ in Millions	1 Months Ended	12 Months Ended
Risk Management (Details) $ in Millions, $ in Millions	Apr. 30, 2020 USD ($)	Dec. 31, 2020 CLP ($)	Dec. 31, 2019 CLP ($)	Apr. 30, 2020 CLF ( )	Dec. 31, 2018 CLP ($)
Risk Management (Details) [Line Items]
Maximum exposure to credit risk does not exceed in percentage		10.00%	10.00%
Number of collateral assets		240,087
Value of guarantees, classified as impaired (in Pesos)			$ 98,653		$ 100,133
Value of guarantees, classified as non-impaired (in Pesos)			133,949		$ 344,098
Assets received in lieu of payment (in Pesos)		$ 6,753	$ 18,737
Percentage of renegotiated portfolio of Banco de Chile on total loans		3.47%
MaximumOverduePeriodForProvisionOfDecreaseInRenegotiatedPaymentBehaviours		30 days
Period used to test for impairment of loans		90 days
Minimum amount for review of approved application by Directors Credit Committee (in Pesos)		$ 147,918
Increase of Guarantee Fund (in Dollars)	$ 3,000
Guarantee financing (in Dollars)	$ 25,000
Annual sales affected by the COVID-19 (in Unidad de Fomento) \|				1,000,000
Aggregate amount (in Pesos)		$ 1,875,298
Percentage of minimum ratio		8.00%
Provision equivalent percentage		100.00%
loan risk (in Pesos)		$ 49,848
Loans to customers at amortized cost (in Pesos)		$ 24,370
Maximum percentage of provisions on renegotiated loans		99.00%
Maximum potential loss impact on the trading book (in Pesos)		$ 12,505
Percentage of assets on net required provisions		3.00%
Percentage of regulatory capital		10.00%
Percentage of minimum regulatory capital		10.00%
Percentage of basic capital		50.00%
Percentage of risk categories one		0.00%
Percentage of risk categories two		10.00%
Percentage of risk categories three		20.00%
Percentage of risk categories four		60.00%
Percentage of risk categories five		100.00%
Percentage of derivative instruments		2.00%
Percentage of financial instruments		0.00%
Percentage of properties and equipment		100.00%
Percentage of capital equivalent		8.00%
Percentage of assets on bank of chile		10.00%
Credit Exposure Factor [Member]
Risk Management (Details) [Line Items]
Maximum exposure to credit risk does not exceed in percentage		95.00%
Confidence level [Member]
Risk Management (Details) [Line Items]
Maximum percentage of provisions on renegotiated loans		99.00%
Confidence level 1 [Member]
Risk Management (Details) [Line Items]
Maximum percentage of provisions on renegotiated loans		99.00%
Bottom of range [member]
Risk Management (Details) [Line Items]
Percentage of minimum ratio		2.50%
Top of range [member]
Risk Management (Details) [Line Items]
Percentage of minimum ratio		5.00%