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Risk Management (Details) - Schedule of amortized costs and net loss of modified financial assets $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
MCh$
Amortized costs of financial assets modified during the period	$ 212,655
Net modification loss	$ 109,743

X

- Definition

The amount of amortised costs of financial assets modified during the period.

+ References

No definition available.

+ Details

Name:	bch_AmortisedCostsOfFinancialAssetsModified
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

The amount of net modification loss.

+ References

No definition available.

+ Details

Name:	bch_NetModificationLoss
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration