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Risk Management (Details) - Schedule of use of cross currency funding $ in Millions	Dec. 31, 2020 USD ($)
Maximum [member]
MMUS$
Cross Currency Funding	$ 3,122
Minimum [member]
MMUS$
Cross Currency Funding	1,724
Average [member]
MMUS$
Cross Currency Funding	$ 2,417

X

- Definition

Cross currency funding.

+ References

No definition available.

+ Details

Name:	bch_CrossCurrencyFunding
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_WeightedAverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: