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Risk Management (Details) $ in Millions | 12 Months Ended
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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% |

X
- Definition Annual sales affected by the COVID-19. + References No definition available. + Details
Name: | bch_AnnualAmountofSalesAffectedByCOVID19
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- 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

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- References No definition available. + Details
Name: | bch_GenerateLosses
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- 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

X
- 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

X
- 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

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- 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

X
- 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

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- References No definition available. + Details
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Namespace Prefix: | bch_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- 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

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- Definition The maximum amount of potential loss impact on trading book. + References No definition available. + Details
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Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- 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

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- References No definition available. + Details
Name: | bch_PercentageOfMinimumRegulatoryCapital
Namespace Prefix: | bch_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- 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

X
- Definition The percentage of renegotiated portfolio of bank on the total loans. + References No definition available. + Details
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Namespace Prefix: | bch_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | bch_PercentageOfRiskWeightedAssets
Namespace Prefix: | bch_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- 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

X
- 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

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- 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

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- References No definition available. + Details
Name: | bch_RiskManagementDetailsLineItems
Namespace Prefix: | bch_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- 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

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- 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

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- References No definition available. + Details
Name: | bch_loanRisk
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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

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

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- Details
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Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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