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Employee Benefits (Details) - Schedule of employee defined benefit plan - CLP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Schedule of employee defined benefit plan [Abstract] |  |
Current service cost | $ 226 | $ 367
Interest cost on benefit obligation | 364 | 160
Actuarial gains and losses | (523) | 91
Net benefit expense | $ 67 | $ 618

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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)] + References No definition available. + Details
Name: | bch_ActuarialGainsAndLosses
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of employment benefit expense relating to defined benefit plans. + References No definition available. + Details
Name: | bch_EmploymentBenefitExpenseDefinedBenefitPlans
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Represents the amount of current service cost. + References No definition available. + Details
Name: | bch_NetDefinedBenefitLiabilityAssetCurrentServiceCost
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from the passage of time. [Refer: Interest expense; Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2021-01-01 -Paragraph 141 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_141_b&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration