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Contingencies and Commitments (Details) - Schedule of insurance policies contracted in Millions | 12 Months Ended
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Dec. 31, 2020 CLF ( )
Schedule of insurance policies contracted [Abstract] |
Responsibility for errors and omissions policy | 60,000
Civil responsibility policy | 500

X
- Definition Civil responsibility policy. + References No definition available. + Details
Name: | bch_CivilResponsibilityPolicy
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Responsibility for errors and omissions policy. + References No definition available. + Details
Name: | bch_ResponsibilityForErrorsAndOmissionsPolicy
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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