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Interest Revenue and Expenses (Details Textual) - CLP ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Interest Revenue and Expenses (Textual)
Interest received basis for impaired portfolio	$ 4,415	$ 5,113

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- Definition

The amount of interest received basis for impaired portfolio.

+ References

No definition available.

+ Details

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

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- References

No definition available.

+ Details

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