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Provisions for Contingent Loans Credit Risk (Details) - Schedule of credit risk for contingent loans - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Outstanding Exposure [Member] |  |
Provisions for Contingent Loans Credit Risk (Details) - Schedule of credit risk for contingent loans [Line Items] |  |
Warranty by endorsement and sureties | $ 348,774 | $ 439,669
Confirmed foreign letters of credit | 120,971 | 91,270
Issued foreign letters of credit | 303,224 | 358,755
Performance guarantees | 2,697,608 | 2,366,953
Undrawn credit lines | 9,347,863 | 8,651,193
Other commitments | 72,355 | 78,951
Total | 12,890,795 | 11,986,791
Expected Credit Loss [Member] |  |
Provisions for Contingent Loans Credit Risk (Details) - Schedule of credit risk for contingent loans [Line Items] |  |
Warranty by endorsement and sureties | 8,690 | 3,754
Confirmed foreign letters of credit | 107 | 3
Issued foreign letters of credit | 468 | 200
Performance guarantees | 24,205 | 7,029
Undrawn credit lines | 109,849 | 82,033
Other commitments | 170 | 30
Total | $ 143,489 | $ 93,049

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- Definition Amount of contingent liabilities related to confirmed foreign letters of credit. + References No definition available. + Details
Name: | bch_ConfirmedForeignLettersOfCredit
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of contingent liabilities related to Issued foreign letters of credit. + References No definition available. + Details
Name: | bch_IssuedForeignLettersOfCredit
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of contingent liabilities related to other commitments. + References No definition available. + Details
Name: | bch_OtherCommitments
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of contingent liabilities relating to performance guarantees. + References No definition available. + Details
Name: | bch_PerformanceGuarantees
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition The amount of contingent liabilities related to undrawn credit lines. + References No definition available. + Details
Name: | bch_UndrawnCreditLines
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Warranty by endorsement and sureties. + References No definition available. + Details
Name: | bch_WarrantyByEndorsementAndSureties
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2022-03-24 -Paragraph 86 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2022-en-r&anchor=para_86_a&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_EstimatedFinancialEffectOfContingentLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=bch_OutstandingExposureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=bch_ExpectedCreditLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |