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Contingencies and Commitments (Details) - Schedule of insurance policies contracted in Millions	12 Months Ended
	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

X

- 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

X

- References

No definition available.

+ Details

Name:	bch_ScheduleOfInsurancePoliciesContractedAbstract
Namespace Prefix:	bch_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration