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Expected Credit Losses - Schedule of Composition of Expected Credit Loss (Details) - CLP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Schedule of Composition [Abstract] |  |  |
Expense of allowances established for credit risk | $ 421,210 | $ 321,829 | $ 418,416
Expense of provisions for contingent loans | (4,200) | (53,875) | 51,445
Recovery of written-off credits | (65,313) | (63,256) | (65,740)
Impairments for credit risk from financial assets at fair value through other comprehensive income | 1,009 | (2,754) | 8,009
Total | $ 352,706 | $ 201,944 | $ 412,130

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- Definition A positive XBRL value should normally be entered for this element. A negative XBRL value may need to be entered if this element is used with the members referenced. [Refer: Accumulated depreciation and amortisation [member]; Accumulated depreciation, amortisation and impairment [member]; Accumulated impairment [member]; Aggregate adjustment to carrying amounts reported under previous GAAP [member]; Effect of asset ceiling [member]; Effect of transition to IFRSs [member]; Elimination of intersegment amounts [member]; Financial forecast of cash inflows (outflows) for cash-generating unit, measurement input [member]; Financial forecast of profit (loss) for cash-generating unit, measurement input [member]; Increase (decrease) due to changes in accounting policy [member]; Increase (decrease) due to changes in accounting policy and corrections of prior period errors [member]; Increase (decrease) due to changes in accounting policy required by IFRSs [member]; Increase (decrease) due to corrections of prior period errors [member]; Increase (decrease) due to departure from requirement of IFRS [member]; Increase (decrease) due to voluntary changes in accounting policy [member]; Material reconciling items [member]; Plan assets [member]; Present value of defined benefit obligation [member]; Redesignated amount [member]; Reinsurer's share of amount arising from insurance contracts [member]; Risk diversification effect [member]; Treasury shares [member]] + References No definition available. + Details
Name: | bch_ExpectedCreditLossesTotal
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of expense of provisions established for loan credit risk. + References No definition available. + Details
Name: | bch_ExpenseOfProvisionsEstablishedForLoanCreditRisk
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of expense of special provisions for credit risk. + References No definition available. + Details
Name: | bch_ExpenseOfSpecialProvisionsForCreditRisk
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount of reversal of impairment loss recognised in other comprehensive income. [Refer: Reversal of impairment loss; Impairment loss recognised in other comprehensive income] + References No definition available. + Details
Name: | bch_ImpairmentsForCreditRiskFromFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Definition The gain on the recovery of loans and advances previously written off. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_85&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_GainOnRecoveryOfLoansAndAdvancesPreviouslyWrittenOff
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration