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Risk Management (Details) - Schedule of NRFF impact on accrual book for next 12-months $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
Most Adverse Stress Scenario 12-Month Revenue Accrual Book
Impact by Base Interest Rate shocks	$ (194,559)
Impact due to Spreads Shocks	(6,591)
Higher / (Lower) Net revenues	$ (201,150)

X

- Definition

The amount of Impact by Base Interest Rate shocks.

+ References

No definition available.

+ Details

Name:	bch_ImpactByBaseInterestRateShocks
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	bch_MostAdverseStressScenario12MonthRevenueAccrualBookAbstract
Namespace Prefix:	bch_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of Net revenue impact due to spreads shock for the next 12-months period.

+ References

No definition available.

+ Details

Name:	bch_NetRevenuesFromFundsImpactDueToSpreadsShock
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The total amount of higher/ (lower) net revenue impact for the next 12-months period.

+ References

No definition available.

+ Details

Name:	bch_TotalNrffImpactOnAccrualBook
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration